Most of malignant melanoma of skin had occurred in transformation from benign nevi(Webster, 1944), especially most frequently from junctional nevi of them. which was characterized by flat surface, dark-brown color and hairlessness(Ackermen, 1948)
Blumberg (1972) introduced five levels of histologic invasion of malignant melanoma described by Clark et al.
Morton(1970) reported various measures of treatment such as surgery combined with radiotherapy or with chemotherapy or with recent immunotherapy with good result.
The authors recently experienced 24-yeas old male soldier patient with malignant melanoma on hypothenar region of right palm.
The pathologic investigation including electronmicroscopical aspect was carried out and are presented.
Treatment consisted of the resections of right axillary lymph nodes and the lesion in situ on the hypothenar region of right hand, pedicle skin graft to right hand from abdomen, and immediate postoperative immunotherapy with intradermal injection of 1.0 cc. of B. C. G. daily on extensor surface of both thighs in turn, which lasted for about 3 months duration to find good result.
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