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- 저자 : Chernyshov Stanislav (검색결과 2 건)
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Does transanal endoscopic microsurgery affect rectal function?
Khomyakov Evgeniy,Chernyshov Stanislav,Fomenko Oksana,Rybakov Evgeny 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.4
Purpose: Transanal endoscopic microsurgery (TEM) is the most standardized method for the local excision of rectal neoplasms. Unfortunately, local excisions of rectal lesions by means of TEM are not completely free from undesirable functional sequela. This study was performed to evaluate the risk factors of major loss of function after TEM. Methods: Eighty-nine patients underwent TEM between 2019 and 2020. Anorectal manometry was performed before the surgery and 3, 6, and 12 months after the surgery. The quality of life (QoL) was assessed using the Fecal Incontinence Quality of Life scale. Results: The major decrease in QoL was observed in women in 3 months after the surgery in terms of lifestyle and frustration domains (3.6 and 3.64 points, respectively). In 3 months after the surgery, there was a significant decrease in resting pressure both in male and female patients (P=0.01). This difference remained significant 6 months after the surgery (P=0.01). In 12 months after the surgery, resting pressure returned to the preoperative level in most patients (P=0.50). A significant decrease in manometric parameters appeared when the surgery time is more than 55 minutes (P=0.05), the tumor localization is lower than 3 cm from the anus (P=0.03), and the tumor size is over 3 cm (P=0.001). Conclusion: The most significant risk factors for the development of functional disorders after TEM are surgery time of >55 minutes, tumor localization at <3 cm from the anal verge, and tumor size of >3 cm.
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Total neoadjuvant therapy in rectal cancer: a network meta-analysis of randomized trials
Sychev Sergey,Ponomarenko Aleksey,Chernyshov Stanislav,Alekseev Mikhail,Mamedli Zaman,Kuzmichev Dmitriy,Polynovskiy Andrey,Rybakov Evgeny 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.4
Purpose: To assess the efficacy of total neoadjuvant therapy (TNT) for rectal carcinoma in comparison with conventional chemoradiotherapy (CRT). Methods: A systematic review was performed according to the PRISMA guidelines. A Bayesian network meta-analysis was done using NetMetaXL and WinBUGS. This study was registered in PROSPERO on March 3, 2022 (No. CRD-42022307867). Results: Outcomes of 2,719 patients from 10 randomized trials between 2010 and 2022 were selected. Of these 1,191 (44%) had conventional long-course CRT (50–54 Gy) and capecitabine, 506 (18%) had induction chemotherapy followed by CRT (50–54 Gy) and capecitabine (iTNT), 230 (9%) had long-course CRT (50–54 Gy) followed by consolidation chemotherapy (cTNT), and 792 (29%) undergone modified short-course radiotherapy (25 Gy) with subsequent chemotherapy (mTNT). Total pathologic complete response (pCR) was 20% in the iTNT group, 21% in the mTNT group, 22% in the cTNT group, and 12% in the CRT group. Statistically significant difference in pCR rates was detected when comparing iTNT with CRT (odds ratio [OR], 1.76; 95% credible interval [CrI], 1.06–2.8), mTNT with CRT (OR, 1.90; 95% CrI, 1.25–2.74), and cTNT with CRT groups (OR, 2.54; 95% CrI, 1.26–5.08). No differences were found in R0 resection rates. No significant difference was found in long-term outcomes. Conclusion: The early administration of systemic chemotherapy in the TNT regimen has improved short-term outcomes, though long-term results are underreported. Randomized trials with survival as the endpoint are necessary to evaluate the possible advantages of TNT modes.
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