Trichoblastoma
From Felipedia
Trichoblastoma is a common and usually benign neoplasm of cat skin, characterised as a tumour derived from or reduplicating the primitive hair germ of embrionic follicular development.
In a study in 1997, 26% of routine skin biopsies revealed trichoblastomas, frequently present on the neck and head.
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Histological appearance
- Tumor cells are fusiform
- Islands of neoplastic cells vary in size
- At the periphery, neoplastic basal cells are columnar, and appear palisaded adjacent to the basal lamina
- Central portion of the mass is occupied by narrow, elongated cells with an interwoven pattern
- In the central area of the lobubules the spindle cells may have a more extensive eosinophilic cytoplasm
