Pyloric gland adenoma: a clinico-pathological analysis of 90 cases

Virchows Archiv : an International Journal of Pathology
M ViethM Stolte


Pyloric gland adenoma is a rarely described neoplasia of the gastric mucosa. Recent publications have shown that similar lesions are also found in the gallbladder, the main pancreatic duct, the duodenum and the cervix of the uterus. Apart from case reports, few clinical data are available on these patients. We therefore conducted a search of the archived material collected between 1990 and 2000 for more clinical data on patients with this rare lesion. Between 1990 and 2000, 90 patients were diagnosed as having a pyloric gland adenoma in the stomach (77 patients), duodenal bulb (7 patients), duodenum (1 patient), bile duct (3 patients) or gallbladder (2 patients). Pyloric gland adenomas account for 2.7% of all gastric polyps and occur predominantly in old age (73+/-12.8 years), more frequently in women (75%) than in men. The predilection site in the stomach is the corpus mucosa (64%) and they are often found in patients suffering from autoimmune gastritis (36%). At the time of diagnosis, pyloric gland adenomas measure 16.1+/-9.1 mm in size. In 30% of gastric pyloric adenomas, transition to well-differentiated adenocarcinoma has been noted. In our material, pyloric gland adenoma is the third most common neoplastic polypoid lesion...Continue Reading


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