[Is involvement of skin appendages or thickness of the epidermis an aid in differential diagnosis between lentigo maligna melanoma and superficially spreading melanoma in situ?].

Neither the involvement of hairfollicles nor of the ducts of the sweat glands by melanoma cells nor the thickness of the epidermis are helpful in differential diagnosis of lentigo maligna melanoma and superficial spreading melanoma in situ. The epidermis was thinner in LMM, however, LLM is mostly localized in the face where the epidermis is thinner than in other areas of the integument.