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Type 2: rarest form of duodenal atresia, making up 1% of cases. The proximal and distal ends of the duodenum are atretic and separated but are connected by a cord (mesentery still intact). [5] Type 3: makes up 7% of duodenal atresia cases. The ends of the duodenum are atretic without any tissue attachment (mesentery defect). [5]
Periampullary cancer is a cancer that forms near the ampulla of Vater, an enlargement of the ducts from the liver and pancreas where they join and enter the small intestine. [1] It consists of: ampullary tumour from ampulla of Vater; cancer of lower common bile duct; duodenal cancer adjacent to ampulla; carcinoma head of pancreas
Frontal view of the abdomen with double bubble sign, patient was found to have duodenal atresia. In radiology, the double bubble sign is a feature of pediatric imaging seen on radiographs or prenatal ultrasound in which two air filled bubbles are seen in the abdomen, representing two discontiguous loops of bowel in a proximal, or 'high,' small bowel obstruction.
The duodenal bulb (also ampulla of duodenum, duodenal ampulla, or duodenal cap) is the initial, dilated portion of (the superior part of) the duodenum [1] just distal to the stomach; it begins at the pylorus and ends at the neck of the gallbladder. It is normally about 5 centimeters long. [2]
Pancreaticoduodenectomy is most often performed as a curative treatment for periampullary cancer, which includes cancer of the bile duct, duodenum, ampulla or head of the pancreas. [4] The shared blood supply of the pancreas, duodenum and common bile duct necessitates en bloc resection of these multiple structures.
Intra-ampullary papillary–tubular neoplasms (IAPN) are precancerous neoplasms of the ampulla of Vater. [1] On histological examination the neoplasms exhibit both papillary and tubular features. [2] IAPN were first described in 2010. [1] They are rare; comprising 0.5% of gastrointestinal tumours. [1]
Duodenal cancer is a cancer in the first section of the small intestine known as the duodenum. Cancer of the duodenum is relatively rare compared to stomach cancer and colorectal cancer . Its histology is usually adenocarcinoma .
Duodenum / Ampulla of Vater [42] Primary Tumor (T) T Category Tumor Criteria TX: Primary tumour cannot be assessed T1: Invades the mucosa or submucosa only, and less than or equal to 1 cm in size (duodenal tumors) Confined within the sphincter of Oddi, and less than or equal to 1 cm in size (ampullary tumors) T2