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Sarcomatous transformation in a cellular angiofibroma: a case report
1Department of Pathology, University of Vermont, Burlington, VT 05401, USA. Dhkandil@yahoo.com
Journal of Clinical Pathology
|September 29, 2009
Summary
This study reports the first case of sarcomatous transformation in a cellular angiofibroma, a rare benign mesenchymal tumor. The tumor exhibited both benign and malignant features, highlighting a unique presentation and potential for aggressive behavior.
Area of Science:
- Oncology
- Pathology
- Dermatology
Background:
- Cellular angiofibroma is a rare benign mesenchymal tumor typically affecting middle-aged adults.
- These tumors commonly present in the vulvovaginal or inguinoscrotal regions.
Observation:
- A case report details a 3.5 cm subcutaneous mass located below the left anterior superior iliac spine.
- Histological examination revealed bland spindle cells with dilated vessels, alongside areas of sarcomatous transformation with pleomorphic cells and high mitotic activity.
Findings:
- Immunohistochemistry showed tumor cell positivity for vimentin and factor XIIIa, and weak positivity for CD34.
- This represents the first documented instance of sarcomatous transformation within a cellular angiofibroma.
Implications:
- This case expands the understanding of cellular angiofibroma's potential malignant behavior.
- Highlights the importance of thorough histological evaluation for definitive diagnosis and prognosis.
