desmoplastic trichoepithelioma
Synopsis
Combination of microcysts and thin strands of basaloid epithelium wrapped by collagen
Microcysts
Foci of calcification (calcifeid keratin)
Small strands of epithelium occasionally wrapped by small collagen fibers.
The epithelial component resembles the mantle portion of the follicle.
Other follicular constituents may be present.
Possible clusters of ghost cells (as in pilomatricoma)
Possible clusters of basaloid cells with fibroblastic stroma
Differential diagnosis
sclerosing epithelial neoplasms
ghost cell cutaneous tumors