Pancreatitis del surco. Presentación de dos casos en piezas de duodenopancreatectomía

Groove pancreatitis is a form of chronic segmental pancreatitis affecting the periduodenal region between the duodenum and the head of the pancreas. This uncommon entity has distinct clinicopathological features which facilitate its preoperative diagnosis. It is also been known as cystic dystrophy in heterotopic pancreas, pancreatic hamartoma of the duodenum, paraduodenal cyst and adenomyomatosis of the pancreas. We present two cases of groove pancreatitis in adult males aged 39 and 50, both alcohol drinkers, who had undergone pancreatoduodenectomy. Imaging studies showed cystic intrapancreatic lesions. Histologically, a large duodenal wall with prominent myofibroblastic proliferation and cysts admixed with pancreatic tissue and cronic inflammation was seen. Groove pancreatitis may be confused with carcinoma.