[Multiple paraganglioma of the urinary bladder]
Masafumi Kita1, Mitsuhiko Okuyama, Makoto Azumi
1Department of Urology, Asahikawa Medical College.
Hinyokika Kiyo. Acta Urologica Japonica
|November 21, 2007
Summary
A rare urinary bladder paraganglioma was incidentally discovered in a woman treated for melanoma. Surgical removal normalized catecholamine levels, though a small recurrence required continued monitoring.
Area of Science:
- Urology
- Endocrinology
- Oncology
Background:
- Urinary bladder paragangliomas are rare neuroendocrine tumors, often presenting incidentally.
- This case highlights diagnostic challenges and management of a bladder paraganglioma in a patient with a history of malignant melanoma.
Observation:
- A 77-year-old woman incidentally found to have a bladder tumor via CT scan.
- Imaging revealed a 4x5 cm well-enhanced tumor; cystoscopy identified both pedunculated and submucosal components.
- Elevated serum/urine catecholamines and positive 123I-metaiodobenzylguanidine (MIBG) scintigraphy confirmed paraganglioma.
Findings:
- Pathological diagnosis confirmed paraganglioma of the urinary bladder.
- Partial cystectomy led to normalized catecholamine levels and symptom resolution.
- A small recurrence was noted 6 months post-surgery, managed with careful follow-up.
Implications:
- This case underscores the importance of considering rare tumors like paraganglioma in bladder cancer screening.
- Successful surgical management and monitoring strategies for bladder paraganglioma are demonstrated.
- Further research into the association between melanoma and paraganglioma may be warranted.
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