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Persistent sciatic artery aneurysm associated with the development of angiosarcoma: a case report.
Toshihisa Osanai1, Takashi Tsuchiya, Masato Sugawara
1Department of Orthopaedic Surgery, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata, Japan. osanait@med.id.yamagata-u.ac.jp
Archives of Orthopaedic and Trauma Surgery
|December 14, 2007
Summary
A rare congenital anomaly, persistent sciatic artery (PSA), can develop secondary angiosarcoma. This case highlights a soft-tissue sarcoma arising from an aneurysmal PSA, successfully treated with surgical excision.
Area of Science:
- Vascular Surgery
- Congenital Anomalies
- Sarc o ma Oncology
Background:
- Persistent sciatic artery (PSA) is a rare congenital vascular anomaly.
- PSA is predisposed to aneurysmal degeneration.
- Malignant transformation within a PSA has not been previously reported.
Observation:
- A 79-year-old woman presented with a 10-year history of a slowly growing, painful, firm, pulsatile right buttock mass (13 cm).
- Computed tomography angiography confirmed the mass originated from an aneurysmal PSA.
- The mass was surgically excised without complications.
Findings:
- Pathological diagnosis revealed an aneurysmal persistent sciatic artery with focal secondary angiosarcoma.
- This represents the first reported case of soft-tissue sarcoma arising from a PSA.
Implications:
- This case expands the known clinical spectrum of persistent sciatic artery complications.
- Highlights the importance of considering rare vascular anomalies in the differential diagnosis of buttock masses.
- Suggests potential for malignant transformation in aneurysmal PSA, necessitating vigilance and appropriate management.
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