Various modalities of diagnosis are available: * Cystoscopy * Colonoscopy * Poppy seed test * Transabdominal ultrasonography * Abdominopelvic CT * MRI * Barium enema * Bourne test * Cystogram A definite algorithm of tests is followed for making the diagnosis.
Vesicointestinal fistula
Gastrojejunocolic fistula
Rectal foreign body
Pneumatosis intestinalis
Gastric volvulus
Defecation
Intestinal pseudo-obstruction
Devon colic