Association of microscopic colitis and enteropathy due to olmesartan.

We report the case of a patient with severe chronic diarrhea. He was admitted on multiple occasions for this reason, with the cause remaining undetected. After obtaining a detailed medical history and performing several studies, the patient was diagnosed with microscopic colitis and enteropathy due to Olmesartan. In the literature, both diseases appear concurrently only in a few cases. Here we highlight the importance of conducting a comprehensive medical history and maintaining high clinical suspicion to avoid delays in the diagnosis of these uncommon pathologies, as well as unnecessary tests and empirical treatments.

Lymphocytic esophagitis - A little-known cause of dysphagia.

Lymphocytic esophagitis is a little-known entity whose cause is not fully established, and which basically presents with dysphagia. It is characterized by the presence of an infiltrate mainly formed by lymphocytes and other signs of epithelial damage in the absence of other granulocytes. The lack of knowledge about this pathology as well as standardized diagnostic criteria complicates its diagnosis. We present the case of an 84-year-old male with dysphagia and pathological findings compatible with lymphocytic esophagitis, requiring several lines of treatment and even endoscopic dilation with subsequent clinical improvement.

Primary follicular lymphoma of the duodenum as an incidental finding on upper gastrointestinal endoscopy.

Primary follicular lymphoma of the duodenum (FLD) is a rare variant of follicular lymphoma (FL), which represents only 1-4% of gastrointestinal non-hodgkin lymphomas (NHL). It usually appears in the second portion of the duodenum as micronodular lesions and the diagnosis is often incidental. Unlike other NHLs, the prognosis is excellent and the treatment ranges from "watch and wait" to rituximab-based immunochemotherapy regimens, depending on the symptoms and the presence of systemic involvement.