Search Results for: melanocytes

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo?

…to a distinctive brown macule that occurs on an oral lip and is characterized histopathologically by an increased number of melanocytes present entirely at the junction of epithelium and lamina propria. The melanocytes in the hyperpigmented…

Pigmented Lesions

Pigmented Lesions

…of the dermis is widened by them. A few melanocytes may be present in the uppermost part of the reticular dermis. Nuclei of melanocytes are small and monomorphic. The large nests of melanocytes sometimes are confined entirely to the epidermis….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Nevus Cells, Nevocytes, and Nevomelanocytes?

…ive and different from melanocytes. In fact, what are termed nevus cells, nevocytes, and nevomelanocytes are simply abnormal melanocytes. Melanocytes, whether normal or abnormal, are defined morphologically on the basis of ultrastructural…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Junctional Activity and Active Junctional Nevus?

…as solitary units predominate over nests in some high-power fields, and, in contrast to the situation in melanomas, nests of melanocytes and melanocytes organized as solitary units in nevi are situated entirely at the dermoepidermal junction and not…

Spitz and Reed nevi: acquired or congenital?

Spitz and Reed nevi: acquired or congenital?

…ficial or superficial and deep melanocytic proliferations composed of largish, fusiform or epithelioid, in part multinuclear melanocytes (“Spitz cells”) aggregated in largish, predominantly vertically oriented nests [1,21]. Fittingly,…