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Low-grade fibromyxoid sarcoma: case report and immunohistochemical study
1Department of Pathology, University of Virginia Health Sciences Center, Charlottesville 22908.
Journal of Cutaneous Pathology
|August 1, 1994
Summary
This case study details a low-grade fibromyxoid sarcoma in a 52-year-old man's arm. Immunohistochemistry aids in differentiating this fibroblastic tumor from other soft tissue neoplasms.
Area of Science:
- Oncology
- Pathology
- Soft Tissue Neoplasms
Background:
- Low-grade fibromyxoid sarcoma (LGFMS) is a rare soft tissue tumor.
- It typically affects deep and subcutaneous tissues.
- LGFMS presents with diverse histological patterns.
Observation:
- A case of LGFMS in a 52-year-old male's arm is presented.
- Histological features included fibrous and myxoid bands, storiform patterns, and perivascular cuffs.
- The tumor lacked features of high-grade sarcoma, such as anaplasia, high mitotic activity, and necrosis.
Findings:
- Immunohistochemical analysis showed strong CD34 positivity.
- Vimentin was moderately expressed, with rare muscle-specific actin positivity.
- Tumor cells were negative for epithelial, muscular, neural, histiocytic, melanocytic, and vascular markers.
Implications:
- The characteristic histopathology and immunohistochemical profile support LGFMS diagnosis.
- Immunohistochemistry is crucial for excluding other soft tissue tumors in the differential diagnosis.
- Findings suggest LGFMS is primarily a fibroblastic neoplasm.