Basal Cell Carcinoma with Follicular Differentiation

Trichoblastic Carcinoma: A Report of Two Cases of a Deeply Infiltrative Trichoblastic Neoplasm

“…However, a literature search discloses no example reported or illustrated as trichoblastic carcinoma as a distinct entity. We also emphasize that the neoplasms described here are distinct from those previously labeled or implied to be trichoblastic carcinoma 5–7 …”

Spectrum of Tumors With Follicular Differentiation in a Patient With the Clinical Phenotype of Multiple Familial Trichoepitheliomas: A Clinicopathological and Molecular Biological Study, Including Analysis of the CYLD and PTCH Genes

“…Described by Tozawa and Ackerman 27 as BCC with follicular differentiation in 1987, this tumor was called infundibulocystic BCC by Walsh and Ackerman. 28 This entity occasioned considerable debate, 29 as did the later report of basaloid follicular hamartoma.…”

Expression of keratin K14 in the epidermis and hair follicle: insights into complex programs of differentiation.

“…Correspondingly, these cells have also been found to spontaneously undergo programs of differentiation characteristic of other epidermal appendages, including sebaceous gland differentiation and follicular differentiation (Tozawa and Ackerman, 1987;Carter, 1988). Thus, collectively, there seems to be a marked correlation between the level of expression of the so-called basal-specific keratins and the degree to which the mitotically active populations of stratified squamous epithelial cells can proliferate and choose among different programs of differentiation.…”