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[Gastric cancer and obstructive uropathy].
Y Saida1, H S Tsunoda, K Matsueda
1Department of Radiology, University of Tsukuba.
Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|April 25, 1990
Summary
Advanced gastric cancer can cause obstructive uropathy, particularly the undifferentiated type. Careful interpretation of CT and IVU scans is crucial for diagnosing urinary tract involvement secondary to gastric cancer.
Area of Science:
- Urology
- Oncology
- Radiology
Background:
- Advanced gastric cancer can lead to obstructive uropathy.
- Histological type, particularly undifferentiated gastric cancer, influences the pattern of urinary tract involvement.
Purpose of the Study:
- To describe the radiological findings of urinary tract involvement in advanced gastric cancer.
- To highlight characteristic imaging features on CT and IVU.
Main Methods:
- Retrospective review of 24 cases of advanced gastric cancer with obstructive uropathy over 5 years.
- Analysis of radiological findings from Intravenous Urography (IVU) and Computed Tomography (CT) scans.
Main Results:
- Undifferentiated gastric cancer infiltrates along vessels, nerves, and lymphatics, often sparing the urinary tract mucosa.
- Characteristic findings include thread-like ureteral stricture (IVU), ring-like ureteral appearance (CT), renal sinus involvement, and chestnut-bur appearance/wall thickening in bladder involvement (IVU/CT).
- IVU may have limited diagnostic ability when mucosal destruction is absent.
Conclusions:
- Urinary tract involvement in advanced gastric cancer, especially undifferentiated types, presents specific radiological patterns.
- Careful interpretation of CT and IVU is essential for accurate diagnosis and management of secondary urinary tract complications in gastric cancer patients.