Over the past few years, significant advances in surgical and anesthetic techniques as well as appropriate selection of patients have led to an improvement in the immediate and long-term treatment outcomes in patients with non-small cell lung cancer with involvement of tracheal bifurcation. In accordance with the current selection criteria, patients with contralateral lymph node metastases (lung root, aortic window, paratracheal area) require chemotherapy or chemoradiotherapy with subsequent estimation of follow-up and treatment strategy. Surgeries with resection of tracheobronchial bifurcation are considered technically complicated, and they should be performed in carefully selected lung cancer patients and only in specialized centers with extensive experience. It allows the incidence of intra-and postoperative complications to be significantly reduced.
3559 Background: Recently, conflicting evidence has emerged showing the association of ctDNA level and cancer progression. The aim of our study was the development of a method for detecting ctDNA in plasma and the investigation of the prognostic value of ctDNA retention after surgery in the prospective way. Methods: This prospective, single-center, sample collection study; pts with early-stage malignancies of the different origin were included. Tumor somatic mutations were determined by target sequencing of DNA from FFPE tumor blocks. Sequencing was performed using the custom NGS panel covering regions of frequent somatic mutations in 50 genes. Tumor-specific mutations were monitored in plasma samples taken before and after surgery. The median time between surgery and plasma collection was 7 days (5-15). Mutations of plasma ctDNA were determined by ddPCR. The plasma sample was considered "positive" if the content of ctDNA was more than 0.5 copies of mutant DNA in ml plasma. We needed 265 pts for improving 1-year disease free survival (DFS) from 60% to 80% with α=0.01, β=0.1, 10% loss of f.-up and duration of the study for 2 years. Results: The study comprised 271 pts with various cancers including colorectal – 91 (33,6%), pancreatic – 37 (13,7%), breast – 66 (24,4%), lung – 35 (12,9%) and gastric cancer – 42 (15,5%). Pts with stage I was 50 (18,5%), stage II – 118 (43,5%) and stage III – 103 (38%). The median time of the f.-up was 9 mos. (1-37). No significant association was found between the level of ctDNA before surgery and DFS either in the general group or in groups stratified by tumor sites (HR 2.4, 95%CI 0.8-7.1, р=0.12 and HR 1.5, 95%CI 0.4-6.3, р=0.5, correspondingly). ctDNA was detected in the plasma after surgery in 57 (10%) pts: 9 (9.9%) cases of colorectal, 10 (27%) - pancreatic, 9 (13.6%) - breast, 19 (54.3%) - lung, and 10 (23.8%) - gastric cancer. Progression of the disease was detected in 28/57 (49%) pts with ctDNA(+) and 17/214 (8%) - in ctDNA(-) pts (p<0.001). One-year DFS in ctDNA(+) and ctDNA(-) pts were 57% and 87%, respectively (HR 6.1, 95%CI 3.3-11.2, p<0,001). ctDNA positivity after surgery was an independent negative prognostic factor according to Cox regression model fitted to T, N, and adjuvant chemotherapy (HR 5.7, 95%CI 3.1-10.8, p <0.001). Conclusions: These results demonstrate the prognostic significance of ctDNA persisting after surgery in pts with the early stage of the different malignancies. Further clinical validation of this approach is required in trails with modifications of the adjuvant treatment, according to the content of ctDNA.
Diagnosis and treatment of neuroendocrine carcinoma of the thymus (NECT) is the significant problem in oncology. On the clinical course these tumors are much more aggressive than epithelial tumors of the thymus. In most of observations in NECTs there is pronounced macro- and microinvasion in the mediastinal tissue and in 30% of patients there are reveled remote metastases. The study included 17 NECT patients. Surgery is the only radical method in the treatment of such patients. 17 NECT patients were operated, 3 of them were operated again due to incomplete operations in other clinics. The vast majority of patients (58.8%) at the time of visiting had advanced stage of the disease. Out of the entire group in 7 patients NECT was associated with ectopic syndrome of varying severity. According to long-term results after surgical treatment of the overall 5-year survival rate was 62.2%.
Гемангиома сердца относится к редким доброкачественным опухолям, которые чаще локализуются в предсердии или в желудочке и гораздо реже в стволе легочной артерии. В статье представлено клиническое наблюдение успешного хирургического лечения больного с гемангиомой ствола легочной артерии с распространением на ее клапан и левую легочную артерию.Финансирование. Исследование не имело спонсорской поддержки.Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов.
The aim of this study was to evaluate the effect of the chemoradiation therapy on the incidence of postoperative complications and mortality rate in patients with locally advanced tumors of the thoracic esophagus.The study included men and women over 18 with histologically verified squamous cell carcinoma of the thoracic esophagus with TNM stage cT3-4aN0-3M0. Patients were divided into two groups: patients in a main group (n=26) received a complex treatment, patients in a second group (n=30) undergoing only surgical treatment.The first stage of treatment was performed for all 26 patients and included 2 courses of preoperative chemotherapy, followed by a chemoradiation therapy with a 44–46 Gy with weekly injections of chemotherapy. Surgical procedure (R0) was performed for 24 patients (92.3 %) in the main group and for 26 (86.6 %) in a second group.Therapeutic complications were developed in 17 (65 %) patients in a first group, while in a second group this rate was in 18 (60 %) patients from 30. The incidence of surgical complications was slightly higher in a group of patients received a complex treatment –7 (26.92 %) patients. In the surgical group such complications was noted in 6 (20 %) patients. The only death in an early postoperative period was in 1 (3.84 %) patient from the main group. The cause was sepsis and the development of multiple organic failure. There were no lethal outcomes in a surgical group.Estimating the incidence of complications, it should be noted that the use of chemoradiation therapy in the neoadjuvant regimen does not significantly affect the course of the postoperative period. The mortality rate was slightly higher in in the group of patients received complex treatment. At the same time, improvement of the ostoperative period and a reduction of mortality rate in group ofpatients undergoing complex treatment is possible due to optimization of preoperative preparation, postoperative management and competent selection of patients.
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