十二指腸ポリープの1例

A Case of Duodenal Polyp

　腸管に生じる良性腫瘍のうちで，十二指腸は回腸につぐ好発部位である．その多くは腺腫，平滑筋腫によって占められる．消化管においては，上皮性の良性の隆起をポリープと呼びならわしているが，十二指腸の場合には腸上皮，腺による場合と，ブルンネル腺が主であるadenomatous polypがある．これらは発生部位，性格をかなり異にすると考えられ，区別して考えられるべきものである．

　本稿では，十二指腸に生じていた，おそらく炎症性であろうと思われるadenomatous polypを報告し，若干の考察を加えることとする．

　Next to the cecum, non-epithelial tumors favor the duodenum as their site of growth, but polyp (epithelial, adenoma) is also relatively often observed in it.

　There are 2 types of' duodenal polyp; the first is due to hyperplasia of the epithelial element in the lamina propria, and the second to hyperplasia of the Brunner's glands. Of 30 cases of duodenal polyp reported so far in Japan, 22 are due to the latter. The first type is more often reported in foreign countries and its preferential site is the papilla, while in Japan duodenal polyp is most often found in the bulb, probably because of difference of the tissue structure. Its age incidence ranges from 20 to over 70, more often in the age groups of 50 to over 60. Gastric juice is mostly anacidic. Canceration was found in 2 of 30 cases (6.6%).

　In this paper is a report of adenomatous polyp of the duodenum encountered in a 40-year-old male. There were besides 2 adenomatous polyps in the stomach having similar findings to those of the giant rugae. They were all excised sucessfully.