May Cause

Gas in bladder wall or lumen

May Be Caused by

 Common

Bladder cancer

Cervical cancer

Colon cancer

Congenital anal atresia

Crohn disease

Diverticulitis of colon

Endometritis

Iatrogenic injury

Instrumentation

Malignant neoplasm

Ovarian cancer

Pelvic inflammatory disease

Postoperative state

Postpartum state

Radiation therapy

Trauma

 Uncommon

Appendiceal perforation

Calculus eroding through bladder wall

Foreign body

Lymphogranuloma venereum

Schistosomiasis

Tuberculous enterocolitis

Ulcerative colitis