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Malignant melanoma in the lower extremity. A comprehensive overview
Clinics in Podiatric Medicine and Surgery
|July 1, 1986
Summary
Malignant melanoma, a rising cancer, requires accurate diagnosis via biopsy and staging. Treatment and prognosis depend on melanoma type, site, and stage, with surgical margins varying by thickness.
Area of Science:
- Dermatology
- Oncology
- Pathology
Background:
- Malignant melanoma incidence and mortality rates are increasing globally.
- Lower extremity melanomas are prevalent in females and common on the foot.
- Etiology involves sunlight, hormonal, genetic, and immunologic factors.
Purpose of the Study:
- To review the diagnosis, staging, and treatment of malignant melanoma.
- To discuss prognostic factors and management strategies based on clinical and pathological findings.
Main Methods:
- Diagnosis relies on suspicious lesion biopsy for pathologic identification and staging.
- Excisional biopsy margins vary from millimeters to centimeters based on melanoma thickness.
- Staging incorporates clinical and pathological assessment, including nodal status.
Main Results:
- Stage I thin melanomas have good prognoses with adequate margins.
- Thicker melanomas (0.76-4.0 mm and >4.0 mm) require larger excision margins (3-cm and 5-cm, respectively).
- Advanced melanomas with nodal metastases necessitate lymph node dissection; prophylactic dissection may benefit select Level III lesions.
Conclusions:
- Prognosis is determined by melanoma type, location, and stage.
- Surgical management, including margin selection and lymph node dissection, is crucial.
- Adjuvant therapies may improve survival for patients with poor-prognosis melanomas.