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Malignant PEComa of the skull base
1Department of Pathology, Stanford University Medical Center, Stanford, CA 94305, USA. nlehman@stanford.edu
The American Journal of Surgical Pathology
|August 19, 2004
Summary
Perivascular epithelioid cell tumors (PEComas) are rare neoplasms. This report details a malignant PEComa of the skull base, a novel location for this tumor type.
Area of Science:
- Oncology
- Pathology
Background:
- Perivascular epithelioid cell tumors (PEComas) represent a rare group of neoplasms.
- This category includes angiomyolipoma, lymphangioleiomyomatosis, clear cell "sugar" tumors, and clear cell myomelanocytic tumors.
- PEComas are typically characterized as benign lesions.
Observation:
- This report presents a case of a malignant PEComa.
- The tumor was located in the skull base.
- The patient was a 49-year-old woman.
Findings:
- The skull base is identified as a previously undescribed location for PEComas.
- The presented case is characterized as a malignant PEComa.
Implications:
- This finding expands the known anatomical distribution of PEComas.
- Highlights the potential for malignancy in PEComas.
- Suggests the need for considering PEComas in the differential diagnosis of skull base lesions.