Surgeons must provide adequate specimens including the full thickness of the tumors and adjacent uninvolved mucosa for correct histopathology diagnosis. File:Micrograph of penile<unk>  - 20x.Low-magnification micrograph of penile<unk> . The tumor is characterized by prominent papillomatosis. File:Micrograph of penile<unk>  - 200x.High magnification. There is prominent acanthosis. The tumor front is broad-based and pushes the subepithelial tissues. Subtypes Epithelioma cuniculatum (also known as Carcinoma cuniculatum, and Ackerman tumor) is a subtype of<unk> , characterized by well-differentiated epithelial cells which lack cytological atypia, but display a blunt papillary/pebbly surface and keratin-filled crypts extending deep into the connective tissue. These keratin-filled resemble rabbit burrows. It is located almost exclusively on the foot, but at least oral location has also been described.
Verrucous carcinoma
Anaplastic carcinoma
Basal-like carcinoma
Mucinous carcinoma
Adenosarcoma
Lymphoepithelioma-like carcinoma
Mammoplasia
Epithelial-myoepithelial carcinoma