Histology and Explanation of Squamous cell Papilloma

Squamous cell papilloma (verruca vulgaris) is a benign epithelial tumor. Tumor cells proliferate and produce finger-like or warty projections; secondary, the subjacent vessels and connective tissue (fibrovascular core) grows to sustain and feed the tumor. The tumor cells resemble normal squamous cells, but there is an increase of the layers number: acanthosis, hypergranulosis and hyperkeratosis. The basement membrane is intact.