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Perineal schwannoma
Anass Majbar1,2, Abdelmalek Hrora3, Ahmed Jahid4
1Faculty of Medicine and Pharmacy, Surgery, Mohamed V University, Rabat, Morocco. anassmajbar@gmail.com.
BMC Research Notes
|June 15, 2016
Summary
Perineal schwannomas, rare nerve sheath tumors, can present as large masses near the anal sphincter. Complete surgical excision is crucial to prevent recurrence and potential incontinence.
Area of Science:
- Oncology
- Surgical Pathology
Background:
- Schwannoma is a benign tumor originating from peripheral nerve sheath Schwann cells.
- Perineal schwannomas are exceptionally rare, with limited reporting in medical literature.
Observation:
- A 62-year-old male presented with a suspected perineal mass.
- Clinical examination revealed a soft mass adjacent to the anus.
- Computed tomography identified a contrast-enhancing perineal mass near the anal sphincter.
Findings:
- Complete surgical excision of the perineal schwannoma was performed.
- Pathologic examination confirmed complete tumor removal.
- Dissection near the anal sphincter presented surgical challenges.
Implications:
- Complete excision of perineal schwannoma is vital for preventing recurrence.
- Surgical management requires careful dissection to preserve anal sphincter function and avoid incontinence.
- This case highlights the clinical, radiological, and surgical considerations for rare perineal schwannomas.

