Esthesioepithelioma [Aesthesioepithelioma; Estesio- + (Neuro)Epithelioma]

Esthesioepitheliomas are malignant epithelial skin tumors that develop from the superficial parts of the epidermis or sweat gland ducts. They occur relatively rarely, mainly in young people. A typical tumor, located in the armpit, looks like a small node of pasty consistency, bluish-purple in color with a wide base. The tumor has a thick stalk riddled with blood vessels or nerves. Drops and streams of serous pus, stained with meconium, are released from the tumor. After excision of the tumor, the surface after healing is covered with brownish-black crusts with bloody cracks. Histologically, the transitional epithelium is determined down to the apocrine glands and sweat ducts. Foci of hemosiderin and lymphocytic infiltration are noted. Skin carcinoma described as a follicular hair tumor