Systemic amyloidosis as a cause of chronic diarrhea after gastric surgery. Literature review.

Amyloidosis with gastrointestinal involvement is a rare cause of chronic diarrhoea, and should be considered especially in adult patients with intestinal malabsorption and extra GI manifestations. We present the case of a male patient who, after an oncological gastrectomy, presented with chronic diarrhea that did not respond to treatment and, after study, the cause of the diarrhea was finally found. Primary systemic light chain amyloidosis (AL) initially presents as chronic diarrhea and weight loss after gastrectomy.

Importance of immunohistochemistry in the differential diagnosis of gastric stromal tumors: GIST vs. schwannoma.

The intention of this work is to present a recent case treated in our center. A 77-year-old woman who underwent a laparoscopic subtotal gastrectomy due to the suspicion of a GIST tumor (gastrointestinal stromal tumor), in which the anatomy study the definitive pathology showed the finding of gastric Shawnnoma.

Prognostic differences between lymphoepithelioma-like colon carcinoma and colon adenocarcinoma.

Lymphoepithelioma-like colon carcinoma (LELC) is rare. The Epstein-Barr virus (EBV) hasn´t been implicated in the pathogenesis of LELC of the colon, but they may in fact be more strongly associated with MSI. Its treatment is identical to adenocarcinoma.