Chronic myeloid leukemia in an ulcerative colitis patient receiving azathioprine: A case report.

Ulcerative colitis (UC) is a chronic inflammatory bowel disease usually treated by azathioprine. It is a well-established risk factor for colorectal cancers and extraintestinal malignancies. Nevertheless, the risk of myeloid leukemia in patients with UC is less known.

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Introduction: Vitamin D plays a role in regulating the immune response through an immunomodulatory effect, and is probably involved in the pathophysiology of Crohn's disease (CD).

Aim: to assess vitamin D status in patients with CD as well as in healthy controls and to determine associated factors of vitamin D deficiency in patients with CD.

Methods: We conducted a prospective study over 18 months, including CD patients with age and sex matched with healthy controls.

Pseudoachalasia as the first manifestation of signet-ring cell duodenal carcinoma.

Introduction: Pseudoachalasia is a rare clinical condition, often caused by malignancy. Rarely, this entity can reveal the underlying neoplasia. To the best of our knowledge, we report the first case of pseudoachalasia revealing a metastatic signet-ring cell carcinoma of the non-ampullary duodenum.

Primary hepatic large B-cell lymphoma following direct-acting antiviral treatment for hepatitis C.

Hepatitis C virus (HCV) infection is a major public health concern worldwide, raising important medical and economic issues. HCV-related end-stage liver disease is one of the most common indications for hepatic transplantation. Chronic hepatitis C is also assimilated to a systemic disease because of multiple extrahepatic manifestations, including lymphoproliferative disorders.