diverticulum

...Chronic enteritis refers to a condition that clinically shows chronic diarrhea, abdominal pain, and indigestion symptoms, but like acute disease, the concept is vague, and if examined in detail, it is highly likely to be called a different disease. (2) Small intestine diverticulum A diverticulum is a pouch-like structure that bulges out beyond the outline of an organ, and what is usually seen is a balloon-like bulge of the mucosa and submucosa from a gap in the muscular layer. The middle inner part of the duodenum is an area with a high number of diverticula, and they are found in about 5% of cases during examination. ...

*Some of the terminology that mentions "diverticulum" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…また慢性小腸炎とは臨床的に慢性下痢，腹痛，消化不良症状を示すものをいうが，これも急性症同様概念はあいまいで，詳細に検討すれば別の病名で呼ばれる可能性も大きい。(2)小腸の憩室　憩室diverticulumとは臓器の輪郭外に膨れだした袋状の構造をいい，通常みられるのは筋層のすきまから粘膜，粘膜下層が風船のように膨れだしたものである。十二指腸中部内側は非常に憩室の多いところで，検査を行うと5％くらいの頻度でみられる。…

※「diverticulum」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報