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Difference between revisions of "Talk:Melanocytic lesions"
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== Compound nevus, congenital type - 2 == | == Compound nevus, congenital type - 2 == | ||
The sections show a hair bearing skin with a melanocytic lesion involving both the deep epidermis and dermis. Melanocytes through-out the sections are small, lack nuclear atypia and nucleoli. Mitoses are not identified. In the, epidermis the melanocytes are basal and focally pigmented. In the | The sections show a hair bearing skin with a melanocytic lesion involving both the deep epidermis and dermis. Melanocytes through-out the sections are small, lack nuclear atypia and nucleoli. Mitoses are not identified. In the, epidermis the melanocytes are basal and focally pigmented. In the superficial dermis the melanocytes are in nests and focally pigmented. In the deep dermis the melanocytes are smaller than in the superficial dermis, lack pigmentation and spindled. The lesion shows congenital features; melanocytes cluster around adenxal structures and blood vessels. The lesion is present at the margin. | ||
Thick collagen bundles replace adenxal structures in the dermis focally and is associated with loss of rete ridges in the overlying epidermis; this is consistent with a prior excision at the site. | Thick collagen bundles replace adenxal structures in the dermis focally and is associated with loss of rete ridges in the overlying epidermis; this is consistent with a prior excision at the site. | ||