Indium-111-white blood cell detection of postradiation vesicocutaneous fistulas.

We present a case of urinary bladder fistulization which occurred approximately 25 yr after successful radiation therapy for uterine carcinoma. The extensive fistulas were detected with 111In-oxine-labeled white blood cell scintigraphy and were confirmed with a fistulogram, computed tomography and surgery. Scintigraphy was valuable for both initial detection as well as staging the extent of inflammation for subsequent diagnostic studies and surgical resection.