What Is Nevus Anemicus?
Melanocytic nevi is produced by a group of benign melanocytes gathered at the junction of the epidermis and dermis. Melanocytes may be distributed in the lower reticular diemis, between collagen bundles. Other accessory organs surrounding the skin, such as sweat glands, hair follicles, blood vessels, nerves, etc., occasionally extend to subcutaneous fat.
Melanin mole
- Benign junction mole
- The benign nevus cells seen under the microscope did not have heterosexual cells. They only grew in the dermis and their inflammatory response was not obvious.
- 2. Juvenile melanoma
- 3. Cellular blue mole
- Occurs in the light blue nodules of the hip-tailed crotch. The surface is smooth and irregular. The dark black cells with large dendritic cells can be seen under the microscope. may
- 4. Basal cell carcinoma
- It is a malignant tumor of epithelial cells that infiltrates deep from the basal layer of the epidermis. The surrounding area of the nest is a layer of columnar or cubic cells.
- 5. Sclerosing hemangioma
- The epidermal hyperkeratosis of the dermal milky proliferation and expansion of capillaries is often surrounded by downwardly extending epidermal processes that look like intraepithelial hematomas.
- 6. Senile moles
- Seen in the wart-like nevus of the elderly, the epidermal hyperkeratinocytes are partially thickened or the atrophic spinous layer is thick and the base layer is intact. There may also be pigments to increase the dermal papilla proliferation. The appearance is papilloma-like hyperplasia.
- 7. Seborrheic keratosis
- The lesions also showed papilloma-like hyperplasia. The subepithelial boundaries were clear. Incomplete keratinization. The granular layer first thickened, then thinned or even disappeared. There may be a small amount or more of melanin in the epidermal cells.
- 8. Hematoma under the nail bed
- There is a corresponding history of trauma. The dry blood cells under the microscope may have epithelial fibroblast proliferation.