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Benign melanocytic lesions include lentigo, ephelid (freckle), pigmented nevus, sacral spot, blue nevus, and combined nevus and blue nevus. Malignant melanocytic lesions are melanomas, which arise from melanocytes at the epidermodermal junction, or, rarely, from blue nevi. They usually originate in brown plaques known as lentigo maligna, in pigmented nevi, or in normal skin. Melanoma is diagnosed clinically in less than 50 per cent of instances. Biopsy is therefore of great importance, since practically all melanoma can be cured by adequate early resection.  相似文献   

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Experimental cryptococcosis of the skin   总被引:4,自引:0,他引:4  
M M Song 《Sabouraudia》1974,12(2):133-137
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The venous skin graft method for repairing skin defects of the fingers   总被引:1,自引:0,他引:1  
A venous skin graft for the treatment of skin defects in a finger is described. This procedure involves taking a flap from the forearm together with the subcutaneous vein and anastomosing both ends of this vein to the digital artery and vein, respectively. Thirteen difficult finger wounds were resurfaced with such a venous skin graft. The sizes of the flaps ranged from 1.3 X 3.0 cm to 2 X 5 cm. The lengths of the veins taken were from 6 to 12 cm. Subcutaneous fat is thin, and there is good elasticity in the grafted flap.  相似文献   

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