Papilloma (synovial fibroepithelial polyp) - a benign tumor histogenetically associated with the epidermis, can occur at any age, but more often in the elderly.
Dermoid cyst is a developmental defect. There is from birth or appears in the first years of life, can be located everywhere, but on the face, especially periorbital, in the nose, on the scalp and neck.
The epidermal cyst (blue infundibular cyst) is a developmental defect. It is a slowly growing, dermo-hypodermal nodular formation, localized on the scalp, lime, neck and trunk.
Epidermal nevus is a benign developmental defect, which, as a rule, has a dysembryogenetic origin. Three forms of a nevus are known: localized, inflammatory, systemic. All of them appear at birth or in early childhood.
Malignant melanoma of the skin (syn: melanoblastoma, melanocarcinoma, melanosarcoma) is a high-grade tumor, consists of atypical melanocytes. Genetic predisposition to the development of melanoma is noted - at least 10% of all cases of melanoma are family
Precancerous limited Duobreille melanosis (blue lentigo maligna Hutchinson) is a disease that belongs to the group of precancerous conditions. The classical manifestation of Dyubreil's melanosis in places exposed to insolation (on the face, especially often in the zygomatic area), is characterized by spots with irregular polycyclic outlines.
Nevus Ota is a site of hyperpigmentation of the skin, continuous or with small impregnations, from blue-black to dark brown, with a characteristic localization in the face in the zone of innervation of the trigeminal nerve. Can be two-sided.
Blue nevus (syn: blue nevus of Jadasson). Isolate the usual and cellular blue nevuses. They are benign intradermal melanocytic tumors with characteristic clinical and morphological manifestations. The blue-black color is caused by the optical effect and is associated with the deep arrangement of melanin in the dermis.
Nevus Spitz (syn: spindle cell and / or elithelioid-cell nevus, juvenile melanoma) is an unusual non-moloal melanocyte neoplasm that has a clinical and morphological similarity to the malignant melanoma of the skin.
Dysplastic nevuses (blue clark nevi) are a variant of acquired melanocytic nevi that are characterized by an increased risk of malignancy due to the preservation of the proliferative activity of immature melanocytes in the epidermis and atypism of cells of varying severity.
