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Vanishing "ureterohydronephrosis" on technetium-99m-MDP bone scanning.
The Journal of Nuclear Medicine and Allied Sciences
|January 1, 1989
Summary
Marked bilateral renal and ureteral activity on bone scans, typically indicating ureterohydronephrosis, can be transient. This case highlights a vanishing finding not confirmed by further imaging, prompting discussion of underlying mechanisms.
Area of Science:
- Radiology
- Nuclear Medicine
- Urology
Background:
- Bone scans are utilized for detecting various pathologies, including renal and ureteral abnormalities.
- Bilateral renal and ureteral activity on bone scans is traditionally considered specific for bilateral ureterohydronephrosis.
Observation:
- A patient presented with marked bilateral renal and ureteral activity on a bone scan.
- This specific finding was transient and not reproducible on subsequent bone scans.
Findings:
- Repeated bone scans and further radiological and ultrasound examinations revealed normal renal and ureteral structures.
- The initial bone scan finding suggestive of bilateral ureterohydronephrosis was not substantiated.
Implications:
- This case challenges the absolute specificity of bone scan findings for bilateral ureterohydronephrosis.
- Understanding the mechanisms of transient "vanishing" findings on bone scans is crucial for accurate diagnosis.