In general, it can be classified into nodular, pigmented, superficial, infiltrative, sclerosing, and fibroepithelioma of Pinkus
(FEP). However, an unusual polypoid type can be present.
An additional variant, the fibroepithelioma of Pinkus, typically presents as a solitary nodule on the trunk.
Fibroepithelioma of Pinkus is a true basal cell carcinoma developing in association with a newly identified tumour-specific type of epidermal hyperplasia.
CD-34 and Ki-67 staining patterns of basaloid follicular hamartoma are different from those in fibroepithelioma of Pinkus and other variants of basal cell carcinoma.
G, Fibroepithelioma of Pinkus, with thin anastomosing epithelial cords in a myxoid stroma.
"Fibroepithelioma of pinkus
" most commonly occurs on the lower back.
Fibroepithelioma of Pinkus (FEP) was first described by Hermann Pinkus in 1953 as "premalignant fibroepithelial tumor of the skin'.' In the original article, Pinkus concluded that "these tumors do not constitute a truly new entity, but, rather, that they are an unusual variety of basal-cell epithelioma" .
Cystic changes in classical fibroepithelioma of Pinkus
Cystic fibroepithelioma of Pinkus is a very rare tumor.
Fibroepithelioma of Pinkus is a fenestrated trichoblastoma.
The histological variants are Nodular basal cell carcinoma, Basal cell carcinoma, solid type with cystic degeneration, Infiltrative basal cell carcinoma, Adenoid basal cell carcinoma, Micronodular basal cell carcinoma, Pigmented basal cell carcinoma, Keratotic basal cell carcinoma, Basal cell carcinoma with sebaceous differentiation and Fibroepithelioma of Pinkus
(fibroepithelial basal cell carcinoma).