Renographic Demonstration of Desmoid Tumor-Ureteral Fistula

Abstract

A 20-year-old woman with Gardner syndrome and intra-abdominal desmoid tumors presented with increasing abdominal pain. CT demonstrated a new area of central hypodensity in a presumed desmoid tumor, compressing the left ureter. Findings were suspicious for abscess or fistula to the ureter. Subsequent 99mTc-MAG3 renogram demonstrated persistent extraureteral radiotracer activity in the region of the tumor, confirming a desmoid tumor-ureteral fistula. Desmoid tumors are benign but locally aggressive fibrous neoplasms that can be sporadic or associated with familial adenomatous polyposis syndromes, specifically Gardner syndrome. Fistula formation to the ureter has been reported infrequently.

Analysis of orthopedic surgery of patients with metastatic bone tumors and pathological fractures

“… 17 , 18 Approximately 25% of the lesions are painless and may be identified via bone and radiological screening. 1 , 19 Consistent with the literature, the most common causes of admission among our patients were pain and pathological fractures.…”

“…Skeletal metastases account for 70% to 80% of all malignant bone lesions. 1 Skeletal metastases are more commonly found than primary bone tumors. Approximately one-third of each diagnosed extraskeletal carcinoma results in skeletal metastasis.…”

A Case of a Desmoid Tumor with an Ureterotumoral Fistula Detected on Renal Scintigraphy

“…This tumor has infiltrative features and can result in urinary tract obstruction, and occasionally, an abscess or fistula (1). However, ureteral fistulas caused by desmoid tumors are rarely reported (2)(3)(4).…”

“…Furthermore, some studies have reported the utility of renal DTPA scintigraphy for detecting abnormal formation of the urinary tract (3,5).…”