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Histopathological evolution of a cutaneous myxofibrosarcoma
Rhonda A Kwong1, Steven Kossard
1Skin and Cancer Foundation, Darlinghurst, New South Wales, Australia.
The Australasian Journal of Dermatology
|July 22, 2008
Summary
A rare soft-tissue sarcoma, myxofibrosarcoma, can initially mimic panniculitis or granulomatous disease. Delayed diagnosis can occur due to its deceptive presentation, impacting timely surgical intervention.
Area of Science:
- Dermatology
- Surgical Pathology
- Oncology
Background:
- Soft-tissue sarcomas are rare malignancies.
- Accurate diagnosis is crucial for effective treatment.
Observation:
- A 54-year-old woman presented with a 6-month history of a tender, swollen plaque on her left pretibial area.
- Initial biopsies suggested granuloma annulare or necrobiosis lipoidica.
- The plaque progressively enlarged despite topical corticosteroid treatment.
Findings:
- Subsequent biopsies revealed an intermediate-grade myxofibrosarcoma.
- Histopathology showed atypical spindle cells in a myxoid stroma with multinucleated epithelioid cells.
- Reduced sensation developed distal to the plaque.
Implications:
- Myxofibrosarcoma can initially present as a panniculitis or granulomatous process.
- This can lead to delayed diagnosis and surgical therapy.
- Awareness of this potential misdiagnosis is important for clinicians.
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