May Be Caused by

Actinomycosis

Acute appendicitis

Amebic liver abscess

Backwash ileitis

Carcinoid

Crohn disease

Diverticulitis

Endometrial implant

Food particles

Gallstone

Histoplasmosis

Hydatid disease

Iliac artery aneurysm

Intramural bowel hemorrhage

Intussusception

Ischemic enteritis

Laxative abuse

Meckel diverticulum

Meconium ileus

Mesenteric infarction

Nodular lymphoid hyperplasia

Normal lymphoid follicles

Ovarian neoplasm

Radiation enteritis

Tuberculosis

Typhoid fever

Yersinia enterocolitis