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Penile schwannoma.

D Sato1, T Kase, M Tajima

  • 1Departments of Urology, Pathology and Radiology, Toho University School of Medicine, Tokyo, Japan.

International Journal of Urology : Official Journal of the Japanese Urological Association
|March 10, 2001
PubMed
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Penile schwannoma, a rare tumor, was diagnosed in a 65-year-old man presenting with a penile shaft mass. Surgical excision resulted in no recurrence after six months, indicating a favorable prognosis for this benign neoplasm.

Area of Science:

  • Urology
  • Oncology
  • Pathology

Background:

  • Schwannomas are typically benign peripheral nerve sheath tumors.
  • Penile schwannomas are exceptionally rare, with limited documented cases.
  • Understanding their presentation and behavior is crucial for diagnosis and management.

Observation:

  • A 65-year-old male presented with a palpable subcutaneous mass on the penile shaft.
  • The patient reported no associated pain, urinary, or sexual dysfunction.
  • Physical examination confirmed a well-defined, non-tender nodule.

Findings:

  • Histopathological examination of the surgically excised tumor confirmed the diagnosis of benign schwannoma.
  • Microscopic analysis revealed characteristic features of schwannoma, including Antoni A and B areas.

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  • Immunohistochemical staining supported the diagnosis, showing positivity for S100 protein.

    • Implications:

    • This case adds to the limited literature on penile schwannomas, highlighting their benign nature.
    • Complete surgical excision appears to be an effective treatment, with no observed recurrence in this case.
    • Increased awareness among clinicians may aid in the early diagnosis of this rare penile neoplasm.