Anetoderma Pseudotumor

**A. Pseudotumouralis** or pseudotumor anoderma (pseudoalopecia, pseudolichen) is a pigmented, centrifugally limited, macular or yellowish-brownish change in the surface of the skin, sometimes with thickening and the appearance of infiltrates of adjacent tissues. This lesion is distinguished from a true tumor mainly on the basis of the characteristic spread of the lesion over the surface and gradual onset. This peculiar type of cutaneous pseudoleukemia, due to its inherent processes, is considered a dermatosis with local inflammatory reactions with an allergic component. However, this process does not at all mean a local allergic reaction and allergic inflammation; The process is pseudo-inflammatory and not infectious-allergic. But this dermatosis is considered a local non-infectious allergic reaction by analogy with dermatitis of an allergic nature

The main material is neutrophil granulocytes, less often mononuclear phagocytes. A normal analogue of the process is an inflammatory process of the skin (erythema, eczema) with a nonspecific neutrophilic infiltrate, reminiscent of a skin reaction to an allergen. Therefore, this dermatitis is classified as toxicoallergic dermatitis. The possibility of acute infectious damage is excluded. Colloidal metaplasia of basal cells results in changes to the normal basal layer of the epidermis. Mucin and proteinoids in combination with collagen form a type of skin infiltrate that can reach significant sizes.