May Be Caused by

 Common

Adenocarcinoma

Air bubble

Blood clot

Calculus

Carcinosarcoma

Enlarged prostate

Fibrous polyp

Foley catheter

Inflammatory polyp

Instrument

Papilloma

Squamous cell carcinoma

Transitional cell carcinoma

Ureterocele

 Uncommon

Abscess

Amyloidosis

Brunn nest

Condyloma acuminata

Crohn disease

Cystitis

Diverticulitis

Endometriosis

Fistula

Foreign body

Granuloma

Hemorrhagic cystitis

Hydatid cyst

Impacted ureteral calculus

Infection

Intramural hematoma

Leukoplakia

Lymphogranuloma venereum

Lymphoma

Malacoplakia

Metastasis

Mixed mesodermal neoplasm

Mural edema

Mural hemorrhage

Mycetoma

Nephrogenic adenoma

Neurofibroma

Pheochromocytoma

Prolapsing urethral polyp

Sarcoma

Schistosomiasis haematobium

Squamous metaplasia

Surgery

Suture granuloma

Tuberculosis

Ureteral anastomosis

Urticarial edema