Search Results for: melanocytes

Histologic Diagnosis of Inflammatory Skin Diseases

Tinea nigra

…olor. Potassium hydroxide preparation is negative for fungi in the cornified layer of benign and malignant proliferations of melanocytes. Stain of skin by silver nitrate has an unnatural appearance because it is caused artifactually. It can be…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Borderline, Minimal Deviation, and Nevoid Melanomas?

…potential for metastasis.” “Six forms of minimal deviation melanoma have been described . . . A small nodule of melanocytes that show moderate to moderately severe atypism and impinge on the reticular dermis . . . Minimal deviation…

Histologic Diagnosis of Inflammatory Skin Diseases

Merkel Cells

…f any seeming association with neural elements. Merkel cells appear in fetal skin by the 16th week of gestation, and, unlike melanocytes, they do not come from the neural crest, and, unlike Langerhans” cells, they do not come from the bone…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Atrophie Blanche?

…f months, as a result of sclerosis, loss of melanin from epidermal keratocytes into dermal melanophages and impotence of the melanocytes remaining at those sites, lesions become white macules and atrophic patches. The term atrophie blanche…

Complete regression of a melanocytic nevus after epilation with diode laser therapy

Complete regression of a melanocytic nevus after epilation with diode laser therapy

…he preferential targeting of melanin in the hair follicle over melanin in the epidermis. In a nevus, the increased number of melanocytes and melanin suggests that the photons of the laser for hair removal might be absorbed by the neoplastic…

Histologic Diagnosis of Inflammatory Skin Diseases

Suggested Readings

…. Fluid and Electrolyte Abnormalities in Exocrine Glands in Cystic Fibrosis. San Francisco: San Francisco Press, 1982:35-52. Melanocytes Boissy RE. The melanocyte. Its structure, function, and subpopulations in skin, eyes, and hair. Dermatol Clin…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Precursor Lesions of Melanoma?

…ucosal lentiginous melanocytic proliferations have in common? Apart from the fact that all of them are neoplasms composed of melanocytes, they have nothing in common! Lentigo maligna is a synonym for a flat lesion of melanoma (melanoma in situ)…

Clinical Case Studies

Nevus of Ota

…ated incidence of 0.014–0.034% among Asians.1 Although the etiology and pathogenesis are unknown, Nevus of Ota may represent melanocytes that failed to completely migrate from the neural crest to the epidermis during the embryonic stage.2 The two…