[Pseudomyxoma peritonei arising from urachal carcinoma]
Kenji Nakamura1, Naoki Terada, Yosuke Shimizu
1The Department of Urology, Kyoto University Graduate School of Medicine.
Hinyokika Kiyo. Acta Urologica Japonica
|November 23, 2013
Summary
A man with dementia developed mucinuria due to a urachal cyst. This progressed to pseudomyxoma peritonei, a rare condition involving mucinous tumors in the abdominal cavity.
Area of Science:
- Urology
- Oncology
- Gastroenterology
Background:
- A 77-year-old male with severe dementia had a history of urachal cyst without follow-up.
- The patient presented with symptoms of mucinuria, indicating a potential complication.
Observation:
- Ultrasonography revealed a heterogeneous tumor above the bladder.
- Cystoscopy identified mucinous fluid and a non-papillary tumor secreting mucin at the bladder dome.
- Computed tomography showed extensive mucinous tumor filling the peritoneal cavity, raising suspicion for peritonitis.
Findings:
- Emergent surgery was performed, but tumor removal was not feasible; a biopsy was obtained.
- Pathological diagnosis confirmed pseudomyxoma peritonei originating from urachal carcinoma.
Implications:
- This case highlights a rare progression of urachal carcinoma to pseudomyxoma peritonei.
- It underscores the importance of follow-up for urachal cyst patients, even with cognitive impairment.
- The findings emphasize the diagnostic challenges and aggressive nature of this rare malignancy.
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