Talk:Seborrheic keratosis

Hyperkeratotic?

SKIN LESION, LEFT EAR LOBE, EXCISION:
- SEBORRHEIC KERATOSIS (HYPERKERATOTIC TYPE).
- SOLAR ELASTOSIS.
- NEGATIVE FOR DYSPLASIA AND NEGATIVE FOR MALIGNANCY.

Micro

The sections show skin with elongated rete ridges that focally curve toward the centre of the lesion, acanthosis, hyperkeratosis in vertical columns, and focally dilated blood vessels at the dermal-epidermal junction. No appreciable basilar nuclear enlargemnt is present. No definite koilocytic change is apparent.

No parakeratosis is identified. Marked solar elastosis is present. No melanocytic nests are apparent. Mitotic activity is not apparent.

Stucco keratosis-like

SKIN LESION, LEFT LOWER LEG, PUNCH BIOPSY:
- PAPILLOMATOUS SQUAMOUS HYPERPLASIA WITH FEATURES OF STUCCO KERATOSIS.
- NEGATIVE FOR DYSPLASIA.

Micro

The sections show skin with papillomatous squamous hyperplasia with hyperkeratosis, hypergranulosis and acanthosis. A mild lymphocyte predominant superficial perivascular infiltrate is present No pseudohorn cysts are seen. No basal cell atypia is identified. Proliferative activity is not readily apparent. No koilocytic changes are identified. The lesion is marginally excised in the plane of section.