KEYWORDS ABSTRACTBreast carcinoma, Neoadjuvant therapy, Cytokeratin-18, M30 cytokeratin-18 peptide, M65 cytokeratin-18 peptide Scan to discover online Background & Objective: Prediction of response to neoadjuvant treatment is an important part of treatment of patients with breast cancer. This study aimed to assess changes in serum levels of Cytokeratin 18 during neoadjuvant chemotherapy in patients with locally advanced breast cancer and its association with neoadjuvant treatments. Methods: This research was performed on newly diagnosed breast cancer patients referred to Omid Radiotherapy Center and radiotherapy and oncology departments of Emam Reza and Ghaem hospitals, in Mashhad, Iran. Serum levels of M30 and M65 fragments of Cytokeratin 18 were measured before and 24 hours after the first course of neoadjuvant chemotherapy. Changes in serum levels of Cytokeratin 18 and its fragments and their correlation with pathologic response were analyzed.Results: Pre-and post-chemotherapy levels of M30 were respectively 223.9±18.94 and 250.7±23.92 U/L (P=0.24). For M65, these levels were respectively 301.5±313.9 and 330.2±352.2 U/L (P=0.1). Changes in M30 level during chemotherapy in patients with and without pathologic complete response were -20±92.69 and 43.1±106.5, respectively (P=0.1). For M65, these changes were respectively -247±55 and 76±240 (P=0.1). Baseline levels of M30 and M65 had no relation with menopausal status, tumor grade, hormone receptor status, Ki67 expression, molecular subtype, and stage. Conclusion:Our findings showed statistically insignificant changes in the level of Caspase-cleaved-(M30) and uncleaved-(M65) cytokeratin 18 fragments (apoptotic and necrotic indicators, respectively) during neoadjuvant chemotherapy in patients with breast cancer. There was no notable relationship between tumor-related factors and either baseline levels or serum changes of CK18 fragments. Also, there was no correlation between M30/M65 level and pathologic response to neoadjuvant chemotherapy. Main Subjects:Breast Pathology

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Fistulizing ano-perineal lesions occur in more than 20% of patients with Crohn's disease (CD). Although many medical and surgical treatments are now available, the relapse rate of such lesions remains high at nearly 30%. The objective of this study was to identify factors predictive of a new episode of anal suppuration in patients with fistulizing ano-perineal CD initially put into remission. This was a retrospective single-center study that included between 2018 and 2022 all patients with CD complicated by ano-perineal fistula put into remission. Achievement of remission was defined by the absence of new suppuration within 3 months of the last drainage surgery. Fifty-seven patients (57% female; median age at drainage 31 years) with multiple episodes of suppuration were included consecutively during the period. The rate of new ano-perineal suppuration was 22%, which occurred within a median of 1.8 years. Actuarially, survival without new suppuration was 96.7% at 1 year, 78.4% at 3 years, and 74.4% at 5 years. In the 38 (66.6%) patients receiving anti-TNF therapy after drainage, colonic (OR 1.25, p = 0.015) or ileocolic (OR 5.16, p = 0.015) location of CD, stenosing luminal phenotype (OR 5. 32, p = 0.013) and discontinuation of anti-TNF therapy during follow-up (OR 3.37, p = 0.049) were associated with an increased risk of a new suppurative episode in multivariate analysis. Conversely, discontinuation of conventional immunosuppressive therapy was associated with a reduced risk of a new episode of suppuration (OR 0.22, p = 0.29).

Ulcerative colitis (CU) is an inflammatory disease predisposing to colorectal cancer. Colorectal cancer in ulcerative colitis is more often metachronous or synchronous. In this case report we present a patient with multifocal colorectal cancer in the course of CU and operative treatment that was implemented. Additionally primary sclerosing cholangitis was diagnosed in this patient post-operatively.

Juvenile polyposis syndrome is a rare autosomal dominant hereditary disease characterized by the presence of several juvenile polyps in the gastrointestinal tract. This disease predisposes to colorectal cancer, hence the importance of an early detection and a rigorous endoscopic screening [1]. We report the case of a juvenile colorectal polyposis in a 16 years old child revealed by a chronic rectal bleeding.