Clinically, clear cell hidradenoma presents as a slow growing, solitary, freely mobile and firm nodule. Occasionally, there may be a cystic appearance. The lesions may be skin-colored, red, blue or brown; multiple lesions are rare. There is a predilection for occurrence over the scalp, face, thorax and abdomen; however, the tumor may be located anywhere on the body.[3] Rarely, malignant transfo...

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