Colonic carcinosarcoma is an extremely rare tumor composed of mixed malignant epithelial and mesenchymal cells. Due to its rarity, its pathogenesis is poorly understood, and there are no specific guidelines for its treatment.

Key Clinical MessageDorsal agenesis of the pancreas is a rare congenital anomaly. Fifty‐eight cases were reported from 1913 till 2015, nine of which were associated with tumors. We present the 10th case, the first to be associated with pancreatic mucinous adenocarcinoma and cystic teratoma, successfully managed by Whipple procedure and total pancreatectomy.

Bariatric surgery is used to induce weight loss (baros = weight). Evidence has shown that bariatric surgery improves the comorbid conditions associated with obesity such as hypertension, hyperlipidemia, and type 2 diabetes mellitus T2DM. Hence, shifting towards using metabolic surgery instead of bariatric surgery is currently more appropriate in certain subset of patients. Endocrine changes resulting from operative manipulation of the gastrointestinal tract after metabolic surgery translate into metabolic benefits with respect to the comorbid conditions. Other changes include bacterial flora rearrangement, bile acids secretion, and adipose tissue effect. The aim of this systematic review is to examine clinical trials regarding long-term effects of bariatric and metabolic surgery on patients with T2DM and to evaluate the potential mechanisms leading to the improvement in the glycaemic control.

Highlights Trichobezoar is a rare disorder that almost exclusively affects young females. We present a review of the main characteristics of this disease with a case of gastric outlet obstruction. A treatment should be coupled to psychiatric evaluation and therapy to prevent recurrence.

Jejunal diverticula is a rare condition quoted to affect between 0.5% and 7% of the individuals. This disease is usually clinically silent but becomes symptomatic when complications develop. Among its complications is small bowel volvulus that is a very rare entity.

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Sebaceous carcinoma of the breast is an extremely rare tumor. To the best of our knowledge only 15 cases have been reported in literature. Herein, we report a case of sebaceous carcinoma of the breast and describe the histopathologic features of sebaceous carcinoma of the breast in an elderly female.

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