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Siberian journal of oncology

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Vol 23, No 2 (2024)
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EPIDEMIOGICAL STUDIES

5-14 539
Abstract

Objective: To evaluate the effect of the time from morphological confirmation of the diagnosis to the start of specialized treatment (time to treatment start: TTS) on cancer-specific survival (CSS) of patients with cancer of the female reproductive system (CFRS) using the data from the regional cancer registry of the Arkhangelsk region (ARCR) over the period 2000 to 2022. Material and methods. depersonalized data on all cases of breast (BC), cervical (CC), corpus uteri (CUC) and ovarian (OC) cancers were obtained from the ARCR for the period 2000–2022. We compared survival with TTS of 0–7 days (recommended by the state guarantee program), 2–4, 5–8, 9–12 weeks, and 3–6, 7–12 months. Cancer-specific survival was calculated using the life tables and Kaplan-Meier methods. The Cox proportional hazard model was used to correct for other prognostic factors. Results. A total of 19321 cases were analyzed. The ministerial recommended TTS of ≤7 days was observed in 61.9 %, 28.5 %, 27.3 % and 55.9 % of patients with BC, CC, CUC and OC, respectively. the five-year CSS for BC, CC, CUC and OC was 73.9 %, 66.5 %, 73.0 % and 52.1 %, respectively. The TTS of ≤7 days compared to longer TTS was associated with the highest 5-year CSS rate in breast cancer (74.3 vs 45–4-67.0 %) and CC (80.2 vs 63.1–75.0 %); no significant differences were found in CUC and OC. The risk of death from CFRS was the same for TTS of ≤2 months in breast cancer and ≤12 months in other CFRS. Conclusion. Clinical practice shows that the time before the start of special treatment in accordance to state guarantees may be insufficient. early treatment initiation is often possible in the early stages of CFRS. The time to treatment start of < 8 weeks after morphological verification does not worsen survival. The identification of individual groups of patients who need earlier treatment is warranted.

CLINICAL STUDIES

15-25 434
Abstract

Objective. In accordance with clinical guidelines, neoadjuvant chemoradiotherapy (nCRT) is recommended as a beneficial option for treatment of thoracic esophageal squamous cell carcinoma (TESCC). However, some studies did not demonstrate potential benefits of nCRT. In this paper we compared treatment outcomes of surgery alone with preoperative CRT followed by surgery. Material and methods. Group 1 (n=147) consisted of patients who underwent surgery alone. Group 2 (n=3,337) was formed in the framework of the present systematic review and meta-analysis (15 publications captured 20 separate subgroups for analysis). Patients of group 2 received nCRT followed by esophagectomy. Overall survival (OS) and median OS were estimated. Results. The median OS was reached in group 1 and in 12 separate subgroups of group 2 (2310 of 3337 patients). In groups 1 and 2 the OS median estimates were 31.0 and 28.1, respectively (p=0.873). Respective 3-year and 5-year OS were 0.49 vs 0.48 (p=0.425) and 0.37 vs 0.41 (p=0.228). The median OS was not reached in 8 separate subgroups of group 2 (1027 of 3337 patients). In this case, group 2 patients had significantly higher 3- and 5-year OS compared to group 1 patients: 0.69 vs 0.49 (p=0.000) and 0.60 vs 0.37 (p=0.000), respectively. Pathological complete response to nCRT was associated with better survival. conclusion. nCRT is not appropriate for all patients with TESCC. Improved overall survival may be achieved in patients with a high grade of pathological tumor response to neoadjuvant treatment. Selective administration of nCRT based on highly probable prediction of complete tumor response seems promising. This concept needs further research.

26-36 502
Abstract

Background. Determination of the feasibility of performing minimally invasive surgery for invasive cervical cancer and identification of criteria for optimal surgical access that ensures safety, effectiveness, and satisfactory immediate and long-term results remain challenging in gynecological oncology. The aim of the study was to evaluate the immediate and long-term treatment outcomes in patients with invasive cervical cancer who underwent radical hysterectomy via laparotomy compared to those who underwent minimally invasive surgery. Material and methods. Treatment outcomes of 91 patients with invasive carvical cancer were analyzed. The assessment of the objective tumor response to neoadjuvant chemotherapy using the RECIST scale (Response Evaluation Criteria in Solid Tumors) was confirmed by clinical, ultrasound and CT/ MRI findings. The Kaplan-Maier curves and the log-rank criterion were used to compare the time of relapse-free and overall survivals. Statistical analysis and visualization of the analysis results were performed using prism 9.5.1 (GraphPad, USA). Results. The presence of parametrial lymphovascular space invasion and the frequency of lymphadenopathy were comparable for both groups of patients. there were no statistically significant differences in the number of the resected lymph nodes, but there was a statistically significant difference in volume of blood loss and the duration of surgery between the groups (p=0.0001). Every third patient was diagnosed with stage IIIC after surgery (pelvic lymph node lesion). Intraoperative complications were significantly lower in the laparoscopy group than in the laparotomy group (6.7 % vs 13 %). No significant differences in the proportion of relapses of the disease between the groups were found (9.6 % in the laparotomy group vs 11.7 % in the laparoscopy group). There were no significant differences in overall and relapse-free survival between the groups. Conclusion. Minimally invasive surgery is a promising and adequate surgical technique for the treatment of cervical cancer. However, additional studies are needed to determine the indications for these surgeries.

37-46 541
Abstract

In patients with lung metastases from renal cell cancer (RCC), it is necessary to search for new prognostic factors influencing survival rates. Aim: To analyze survival rates and identify prognostic factors in patients with lung metastases from RCC. Material and methods. We retrospectively analyzed the data from 655 patients with lung metastases from RCC, who were treated at Moscow city oncology Hospital No. 62 (Moscow) and city clinical oncology center (Saint Petersburg) from 2006 to 2022. Of these patients, 241 (36.8 %) were classified into the intermediate prognosis group, and 278 (42.2 %) into the unfavorable prognosis group. The study investigated clinical and morphologic prognostic factors influencing survival rates in patients with lung metastases from RCC. Statistical analysis was performed using Statistica 10.0 software packages (StatSoft, USA) by constructing Kaplan-Meier curves and survival tables, building a mathematical model of survival. Results. The 3- and 5-year OS rates in patients with lung metastases from RCC (N=655) were 48 % [95 % ci 45–53 %] and 27 % [95 % ci 23–31 %], respectively, with a median OS of 34.9 months [95 % ci 30.4–37.4]. in univariate analysis, ECOG status (p<0.001), histological subtype (p<0.001), Fuhrman grade of tumor differentiation (p<0.001), type and number of metastases (p<0.001), metastases to the bones and liver (p<0.001), lymph nodes (p=0.001), prognosis according to IMDC(p<0.001), nephrectomy and metastasectomy (p<0.001) had a negative impact on OS in patients with lung metastases from RCC. In multivariate analysis, ECOG status 3.66 (2.10–6.39, p<0.001), histological subtype 1.49 (1.10–2.01, p=0.009), grade of tumor differentiation according to Fuhrman 1.54 (1.13–2.09, p=0.006), number of metastases 3.63 (1.44–9.16, p=0.006), prognosis according to IMDC2.27 (1.63–3.17, p<0.001), and nephrectomy 1.87 (1.29–2.70, p=0.001) and metastasectomy 0.69 (0.53–0.88, p=0.003) were additional factors influencing OS rates in patients with lung metastases from RCC. Conclusion. In our study, ECOG status, histologic subtype of RCC, Fuhrman grade of tumor differentiation, number of metastases, IMDC prognosis, and nephrectomy and metastasectomy were additional independent prognostic factors affecting OS in patients with lung metastases from RCC. Further studies are needed to investigate prognostic factors in patients with RCC lung metastases to improve the effectiveness of personalized treatment and survival rates.

47-55 466
Abstract

Methods for assessing post-mastectomy edema: bioimpedance and upper extremity lymphedema index (UEL index) are non-invasive, highly sensitive and easily feasible diagnostic methods, suitable for predicting the prospects of surgical treatment and analyzing the dynamics of edema. The purpose of the study was to study UEL index indicators and bioimpedance data at different stages of upper extremity lymphedema. Material and methods. The study included 64 patients with post-mastectomy edema who underwent bioimpedance, measurement of the circumference of the upper extremity and calculation of the UEL index. Results. The upper extremity lymphedema index and bioimpedance parameters (fluid volume in the limb and the ratio of extracellular fluid to total fluid volume) characterizing the liquid component significantly increased at stages II and III of lymphedema in comparison with the control group. a statistically significant correlation was revealed between the upper limb lymphedema index and bioimpedance parameters (R=0.41) and (R=0.49), respectively. Conclusion. Bioimpedance parameters and values of the upper extremity lymphedema index can be interchangeable. The reliability and high sensitivity of these methods for assessing post-mastectomy edema allows us to obtain quantitative criteria for evaluating the liquid component at different stages of lymphedema.

LABORATORY AND EXPERIMENTAL STUDIES

56-63 405
Abstract

Background. Oropharyngeal squamous cell carcinoma (OPSCC) is characterized by late-stage diagnosis and high rate of mortality. Combined modality treatment including preoperative chemoradiotherapy (CRT) is the standard of care for OPSCC. The search for criteria for predicting the efficacy of preoperative chemoradiotherapy with a view to prescribe it to those patients for whom it is really indicated and will be effective remains challenging. The aim of the study was to identify serum actin-binding proteins that can predict preoperative therapy efficacy in patients with OPSCC. Material and methods. Blood serum from 45 patients with stage II–IV OPSCC was studied. all patients received preoperative chemotherapy with paclitaxel and carboplatin. Radiation therapy in a standard mode was given 2 weeks after chemothetapy. serum levels of actin-binding proteins (CAP1, fascin, ezrin, gelsolin, and profiling) were determined before treatment using ELISA. Results. complete or partial response to preoperative CRT was achieved in 27 patients. Disease progression or stabilization was observed in 18 patients. A comparison of the serum levels of actin-binding proteins before treatment with those obtained after preoperative CRT showed that the serum level of ezrin was lower in patients who did not respond to preoperative CRT than in patients with partial or complete response to therapy. ROC-analysis showed that the serum level of ezrin of less than 2.50 ng/ml can predict the tumor response to CRT as unfavorable (less than 75 % according to the RECIST scale). The sensitivity was 72 % and the specificity was 71 %. Conclusion. Determination of the serum level of ezrin in patients with OPSCC has a predictive value in relation to preoperative chemoradiotherapy.

64-71 493
Abstract

Background. Despite advances in surgical and therapy techniques, non-small cell lung cancer (NSCLC) is one of the most common cancers and the leading cause of cancer-related death. Therefore, it is increasingly important to search for markers that predict the risk of tumor progression. The study of the morphology of the epithelium of the bronchi of different calibers has great potential for solving this problem. The aim of the study was to comparatively evaluate the characteristics and frequency of occurrence of various combinations of morphological changes in the epithelium of the bronchi of large and small calibers in patients with lung squamous cell carcinoma and lung adenocarcinoma. Material and methods. lung samples were collected from 151 NSCLC patients (stage T1–4N0–3M0), who underwent surgery at the cancer Research institute, TNRMC. Various morphological changes in the bronchial epithelium were analyzed. Results. The study of the frequency of occurrence of various morphological changes in small-caliber bronchi showed that basal cell hyperplasia occurred in 90.8 % of cases. Diffuse isolated basal cell hyperplasia was observed in 33.8 % of cases. Focal basal cell hyperplasia was diagnosed in 38.4 % of cases. A combination of basal cell hyperplasia with squamous metaplasia was observed in 18.5 % of cases. The study of the frequency of occurrence in large-caliber bronchi demonstrated that basal cell hyperplasia was the most common morphological variant (93.4 %, including diffuse isolated basal cell hyperplasia in 33.8 % and focal basal cell hyperplasia in 38.4 %). The combination of basal cell hyperplasia and squamous metaplasia was found in 19.8 %. The combination of basal cell hyperplasia with squamous metaplasia and dysplasia was found in 1.3 % compared to the epithelium of small-caliber bronchi. Conclusion. The obtained results on the frequency of occurrence of morphological changes in large-caliber bronchi are of theoretical interest for further research to identify groups at high risk of progression of non-small cell lung cancer.

ONCOLOGY PRACTICE

72-81 954
Abstract

Lung cancer remains one of the most dangerous and most common cancers, requiring constant improvement of diagnostic and treatment methods. The genetic heterogeneity of lung cancer forces us to search for new therapeutic targets in an attempt to achieve greater effectiveness for certain groups of patients. The purpose of the study was to update current knowledge about lung adenocarcinoma with a mutation in the KRAS gene, to consider new opportunities for personalized treatment of KRAS-mutated NSCLC and to form an image of a Russian patient who is potentially indicated for targeted therapy. Material and methods. A search of available literature sources published in the Pubmed, Cochrane Library, Elibrary database was carried out, publications covering the period from 2008 to 2023 were included. Results. The article discussed molecular genetic testing, including NGS next generation sequencing, and its role in determining the presence of KRAS gene mutations in patients with lung cancer. the effectiveness of targeted drugs, such as Sotorasib and Adagrasib was also discussed. The mechanism of action is aimed at suppressing the activity of the mutant KRAS G12C protein, which can significantly improve patient survival prognosis. We obtained data on the results of testing 935 patients with non-squamous non-small cell lung cancer from various medical centers in Russia. The KRAS gene mutation was identified in 160 (17.1 %) patients, of whom 96 (10.3 %) had KRAS G12C variant. The KRAS mutation was determined by PCR in 44 patients and by NGS (including on the FoundationOne platform) in 111 patients. Clinical characteristics, such as gender, age, smoking status, PD-L1 expression level, presence of co-mutations (TP53, STK11, KEAP1, were largely similar between patients from real-world clinical practice and patients included in the CodeBreak100 study. Conclusion. The research results confirm the high effectiveness of Sotorasib and Adagrasib for patients with the KRAS G12C mutation and open up new prospects in the treatment of lung cancer. The clinical data obtained from Russian patients demonstrate consistency with the patient profile from registration studies of these drugs. This once again demonstrates the need to expand the range of molecular genetic testing for timely identification of this group of patients and prescribing the most effective treatment for them.

REVIEWS

82-91 622
Abstract

Background. Pancreaticoduodenal resection (PDR) is the surgical procedure for cancer of the head of the pancreas, distal common bile duct, duodenum and ampulla of Vater. This surgery is associated with a high risk of complications, the development of which can be influenced by various factors. since pancreatic fistula is a key complication of PDR, the choice of the method for pancreatic anastomosis becomes especially important. Material and methods. The search for publications was carried out using the PubMed and Elibrary systems from January 1980 to January 2024. of the 2,300 sources found, 69 were used to write the review. We included data from both retrospective and prospective clinical trials that were devoted to pancreatoduodenectomy for malignant neoplasms, the difficulties encountered in performing this surgery and ways to solve them. Results. Currently, there are more than 60 types of pancreatico-digestive anastomosis, which indirectly indicates the absence of a universal one that ensures the prevention of pancreatic fistula. The treatment outcomes may be influenced by the nature of neoadjuvant treatment, concomitant diseases, anatomical features, presence of obstructive jaundice and methods of its relief. The main mechanisms of influence of negative factors on the development of complications are considered. an individual approach to the patient, taking into account all factors, can significantly reduce the risk of complications.

92-100 450
Abstract

The aim of study: to analyze the accumulated experience and try to identify those clinical situations in which the use of protons will be economically and clinically more effective than photon radiation therapy. Material and methods. The articles devoted to the study of the evaluation and comparison of the effectiveness of proton and photon radiation beams in the treatment of tumors of the central nervous system and published over the past 25 years were searched in the Medline, Embase and the Cochrane Library databases. Results. the analysis of available publications has shown that accelerated protons do not improve survival rates and disease-free rates in all forms of brain tumors compared with photon therapy. However, protons can significantly increase the level of dose distribution conformity and reduce the dose to critical structures (pituitary gland, cochlea, eye lenses, hypothalamus), thus reducing the risk of hearing and visual impairment as well as hormonal and cognitive disorders. All this is critically important for potentially curable malignant tumors, such as medulloblastoma and germinoma, for low malignant potential tumors (grade 1–2 glioma) or tumors with decreased metastatic potential, since proton therapy compared to photon therapy reduces the risk of late side effects that worsen the quality of life of cured children. Conclusion. central nervous system tumors are one of the most common solid malignant neoplasms in children. Radiation therapy (RT) is recognized as an important therapeutic component of treatment and is often used in strategies for multimodal therapy of tumors of the central nervous system in children. Proton radiation therapy is one of the attractive methods of radiotherapy with minimal dose distribution to normal tissues and a decrease in the absorbed dose. The precision of protons reduces the risk of long-term side effects associated with this type of treatment and the induction of secondary malignancies, which is of particular importance for the quality of life.

101-110 615
Abstract

The aim of the study was to summarize the available data on the relationship between adipose tissue mediators and cancer in patients with metabolic syndrome. Material and methods. A literature search was conducted using the PubMed and eliBRARY databases. Of the 400 articles published over the past 20 years, 58 studies were included in the review. Results. There is evidence of an unfavorable course of cancer in patients with metabolic syndrome that is explained by the presence of common pathogenetic pathways. In this review, special attention is paid to adipose tissue mediators that regulate the course of inflammation. The involvement of adipose tissue mediators in the pathogenesis of cancer is discussed. The relationship between adipokines of adipose tissue and the effects of specialized pro-resolving mediators (SpRM), which are metabolites of polyunsaturated fatty acids (resolvins, protectins and maresins), are considered. the associations of mediators that regulate the intensity of inflammation with the metabolic syndrome and cancer are discussed. Conclusion. Further studies will contribute to a better understanding of the relationship between metabolic syndrome and cancer and the search for adequate predictive markers to select the most effective drug strategy for correcting metabolic syndrome.

111-118 511
Abstract

Background. Globally, breast cancer ranks as the fourth most frequent reason for mortality when it comes to fatalities from cancer. The worrisome increases in rates of occurrence and death observed during the previous thirty years or more can be linked to several factors, such as changes in risk factor profiles, advancements in cancer registration, and the development of more effective detection technology. A strong association exists between the progression of metastasis and the mortality rate in breast cancer, with environmental pollutants seemingly contributing to this phenomenon. This association prompts a significant inquiry into the mechanisms that regulate the formation of metastases due to environmental and chemical contaminants. The impact of pollutants and chemical substances on communication pathways, which are essential for the growth and spread of tumor cells, among the numerous possible risk factors is gaining increasing focus. Material and methods. scientific research on environmental variables and additional factors linked to breast carcinoma was located and reviewed using engines such as the PubMed database, the MEDLINE database the Scopus database, and Google Scholar, among others, with search terms like “Breast Cancer”, “Risk components”, “Chemical exposures”, “Environmental toxic exposure”, “Disease progression”, “Bisphenol-A”, “Heavy metallic materials”, and “Food preparations”. Results. This literature aimed to present a thorough overview of the existing data on the impact of environmental and chemical toxins on breast cancer and as a result, a significant relationship between these toxins and breast cancer and its metastatic potential was discovered in more depth. Conclusion. In conclusion, breast cancer's complexity demands a holistic approach encompassing genetic, environmental, and early detection strategies. advancements in stem cell biology and gene identification enhance our understanding. Yet, dissemination remains a key challenge. Environmental toxins play a significant role, necessitating further epidemiological and molecular investigations to mitigate breast cancer's global impact.

CASE REPORTS

119-125 666
Abstract

Background. Ectopic goiter accounts for only 0.2 % to 1 % of all mediastinal goiters. The aberrant right subclavian artery (arteria lusoria) is an extremely rare anomaly of the major vessel, with a prevalence not exceeding 0.3 % in the general population. This paper presents the first case of malignant ectopic retrosternal goiter of a large size in combination with the aberrant right subclavian artery. Clinical case description. A 61-year-old male presented to the thoracic surgery department of P. Herzen Moscow oncology Research institute with a large posterior mediastinal mass measuring 108×106×79 mm and adjacent to the right lobe of the thyroid gland. The tumor displaced the trachea and esophagus. Open biopsy through a thoracotomy incision revealed thyroid gland cells without signs of atypia. A detailed examination revealed mediastinal vascular anomaly – retrotracheal position of the right subclavian artery. a complete longitudinal sternotomy, complemented by a right-sided thoracotomy at the 3rd intercostal space, served as the surgical approach. The operation lasted 320 minutes, with a blood loss of 3500 ml. The postoperative period was uneventful. The morphological examination of the surgical specimen revealed nodular hyperplasia of the ectopic thyroid tissue with the growth of well-differentiated follicular carcinoma without metastatic involvement of removed lymph nodes. Considering the identified follicular carcinoma, total thyroidectomy was performed. Conclusion. In surgical planning, it is crucial to assess the location of major mediastinal vessels and their relationship with the goiter. Therefore, all patients with mediastinal lesions should undergo preoperative contrast-enhanced ct. Retrosternal goiter predisposes to a higher rate of malignancy compared to cervical goiter. If the lower edge of the goiter is at the level of or below the aortic arch, cervical access should be supplemented with sternotomy. In cases of a massive thoracic component, additional thoracotomy is justified.

126-132 469
Abstract

Background. Treatment for inoperable secondary liver cancer remains challenging especially in patients with colorectal cancer. Traditional systemic drug therapy is often ineffective, and the use of transarterial chemoembolization is limited due to the systemic toxicity of some drugs. Combining high efficacy and low systemic toxicity, isolated chemoperfusion is a promising treatment option for patients with liver metastasis. Case report. A patient with mesentery leiomyosarcoma underwent several surgeries and chemotherapy courses, but liver metastases continued to grow. Isolated liver chemoperfusion with melphalan was performed after resection of liver segment and mobilization of liver vessels. To reduce the tumor volume and prevent complications, atypical liver resection was also performed. Conclusion. Isolated liver chemoperfusion for the treatment of liver cancer remains a subject of debate and is not included in the standards for treatment of primary and metastatic liver tumors. This technique was shown to be safe and promising in treating liver metastasis from leiomyosarcoma. However, further research is required to assess the role of this procedure in overall survival.

133-138 870
Abstract

Background. The use of the modern targeted drugs in patients with non-small-cell lung cancer (NSCLC) with certain somatic alterations (genetic alterations in EGFR, ALK, ROS1, BRAF, RET genes, etc.) provides a significant increase in overall and disease-free survival with an acceptable toxicity profile. The use of RET inhibitors, such as selpercatinib, has significantly improved prognosis in NSCLC patients with RET gene translocation, since chemotherapy and immunotherapy in this cohort of patients are ineffective options. The RET gene translocation occurs rarely (2–3 % of cases among lung adenocarcinoma), but detection of this genetic alteration with subsequent administration of targeted therapy significantly improves the prognosis of the disease. Case report. We present a clinical case of the efficacy of targeted therapy with selpercatinib in a 60-year-old patient with RET-positive NSCLC. Methods to eliminate toxicity after selpercatinib therapy and therapy response are described. Results. Second-line selpercatinib therapy resulted in partial response in our patient with lung adenocarcinoma and the presence of translocation in RET gene. Adverse effects from targeted therapy were minimized or eliminated by the use of concomitant therapy, temporary cancellation of targeted therapy with subsequent dose reduction and gradual return to full therapeutic doses. Conclusion. This case demonstrates the high significance and importance of genetic testing in patients with lung adenocarcinoma not only for the most common mutations, but also for rarer somatic alterations, such as translocation in the RET gene. Detection of this translocation and subsequent administration of appropriate targeted therapy significantly improves the prognosis of patients.

139-146 2026
Abstract

Background. Homologous recombination deficiency (HRD) is a valuable molecular marker for predicting response to platinum agents and poly(ADP-ribose)-polymerase (PARP) inhibitors. Germline and somatic alterations in the BRCA1 and BRCA2 genes are the major cause of HRD in ovarian cancer. However, in some cases, tumors arising in carriers of BRCA1 or BRCA2 pathogenic variants do not lose the normal copy of the corresponding gene and are not deficient for homologous recombination. Aim of the study was to present a case of high-grade ovarian carcinoma without HRD phenotype developed in a BRCA2 mutation carrier. Case report. A 48-year-old woman was diagnosed with multiple primaries: HER2-positive high-grade ovarian cancer and colorectal adenocarcinoma. analysis of the coding BRCA1/BRCA2 sequences revealed the germline BRCA2 c.658_659delgt [rs80359604] pathogenic variant. Given the unusual histological features, namely the absence of serous or endometrioid markers and high HER2 expression, we performed additional molecular analysis of the metastatic lesions in the lymph nodes. In all samples, the pattern of chromosomal instability did not match the HRD profile and there was loss of the mutant copy of the BRCA2 gene. Therefore, this tumor lacked the BRCAness phenotype. Conclusion. Tumors arising in HRR gene mutation carriers require additional molecular analysis for a comprehensive assessment of HRD.

147-152 542
Abstract

We report a case of successful surgical treatment of a patient with locally advanced cutaneous squamous cell cancer (cSCC) originating from a burn scar. The burn scar cSCC tends to be more aggressive in nature than conventional skin SCC. treatment of patients with cSCC arising from a burn scar is complicated by the fact that the extensive defects formed after tumor removal are almost impossible to close with local tissues. Purpose: to demonstrate the feasibility of performing surgery for locally advanced cSCC using a thoracodorsal flap. Clinical case description. A 70-year old man presented with cSCC of the right shoulder. The patient had experienced a severe burn covering 70 % of his body surface area at a young age. To repair a large skin defect after tumor resection in the right shoulder, a thoracodorsal artery perforator flap was used. there were no complications in the postoperative period. At a follow-up of 7 months, no evidence of tumor recurrence was observed. Conclusion. The thoracodorsal artery perforator flap has contributed to the efficient reconstruction of extensive soft tissue defects in patients with locally advanced cSCC originating from a burn scar.

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ISSN 1814-4861 (Print)
ISSN 2312-3168 (Online)