Nevus melanocytic dermal type D22.L

Old, burnt-out melanocytic nevus in which the connective tissue stroma has largely displaced the melanocytes.

Melanocytic nevi that have completed their active junctional proliferation phase, in which the dermal melanocytes (so-called nevus cells) are gradually replaced by a neurogenic connective tissue During this involution, the nevus cell nests can express neuroid structures so that "neurofibrom-like" formations can develop. The ability to form pigments is increasingly lost.

> 40 years; no gender dominance

Especially on the face, also on the capillitium. Furthermore, all areas of the skin can be affected. The palms of the hands and soles of the feet are rarely affected, nor are the mucous membranes.

0.3-1.0 cm in size, rarely larger, hemispherical, skin-coloured or greyish-yellowish (in long populations the original brown tone in the dermal melanocytic naevi is completely absent), very soft or fleshy, asymptomatic, broad-based, rarely pedunculated growths, which are frequently impaled by a bristly hair. The tumours are also colloquially interpreted as "warts".

• Fibroma molle
• Dermatofibroma (Histiocytoma)
• peptic ulcers of the skin
• Neurofibroma
• Solid basal cell carcinoma
• On the nose: fibrous nasal papules