Pancreas-preserving duodenal resections vs pancreatoduodenectomy for groove pancreatitis. Should we revisit treatment algorithm for groove pancreatitis?

Figure 4 Microphotograph and resected specimen. A: Microphotograph of the isolated form of the cystic dystrophy of the duodenal wall. Heterotopia of the pancreatic tissue in the duodenal wall. Ectopic pancreatic tissue (EP), dilated ducts of the ectopic pancreas (EPD) and acini (A) in the duodenal wall, M: Duodenal muscle layer fibers; SM: Duodenal submucosa; Muc: Duodenal mucosa. Hematoxylin-eosin, × 100; B: Microphotograph of the isolated form of the cystic dystrophy of the duodenal wall. Cyst in the duodenal wall formed by a dilated duct of the ectopic gland (EPD) with the foci of preserved epithelium (arrows). Hematoxylin-eosin, × 50; C: Cystic dystrophy of the duodenal wall associated with chronic pancreatitis in the pancreatic head (segmental form of groove pancreatitis). Resected specimen after Whipple procedure in a 47-year-old male. There are multiple cysts within the thickened, chronically inflamed duodenal wall of the second portion of the duodenum (arrowheads) without dilation of the common hepatic (yellow arrow) and main pancreatic (black arrow) ducts. Chronic inflammation in the pancreatic head with necrotic mass (thick blue arrow) makes pancreas-preserving surgery unjustified and pancreatoduodenectomy the surgery of choice; D: Isolated form of the cystic dystrophy of the duodenal wall = pure form of groove pancreatitis. Due to unchanged orthotopic gland, pancreas-preserving duodenal resection was performed in a 53-year-old male. Resected 6-cm specimen of the second part of the duodenum with major papilla (thick yellow arrow) and large scar-sided cyst of the medial duodenal wall with the remainder of the ectopic pancreatic tissue inside. A forceps was introduced into the duodenum to show the absence of communication between the duodenal lumen and the lumen of the cyst (white arrow).