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Desmoplastic malignant melanoma: a study by conventional and electron microscopy.
The American Journal of Dermatopathology
|October 1, 1982
Summary
A recurrent chin mass was diagnosed as desmoplastic malignant melanoma. Electron microscopy revealed unusual intracytoplasmic inclusions in the neoplastic melanocytes, aiding diagnosis.
Area of Science:
- Dermatopathology
- Oncology
- Electron Microscopy
Background:
- A 61-year-old male presented with a recurrent chin mass.
- Initial conventional microscopy suggested fibrosarcoma due to atypical spindle cells and abundant collagen.
Observation:
- Melanin stains revealed pigment within the atypical spindle cells.
- Electron microscopy showed cells with desmosomes and melanosomes, confirming melanocytic origin.
- Unusual tubuloreticular intracytoplasmic inclusions were observed in neoplastic melanocytes.
Findings:
- The diagnosis was confirmed as desmoplastic malignant melanoma based on integrated microscopy findings.
- The presence of melanosomes indicated malignant melanocytes.
Implications:
- This case highlights the diagnostic utility of electron microscopy in challenging skin neoplasms.
- The identification of intracytoplasmic inclusions may offer insights into melanoma biology.
- Accurate diagnosis is crucial for appropriate treatment and patient management of desmoplastic melanoma.