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basaloid adnexal tumors

Saturday 7 November 2020


- trichoepithelioma / trichoblastoma (ribbons of basaloid cells, cysts and fibroblastic stroma)
- trichofolliculoma (mature and immature hair follicles)
- cylindroma (jigsaw-puzzle appearance with thickened basement membrane)
- spiradenoma (basaloid cells with 2 cell types)
- sebaceous adenoma or sebaceous carcinoma
- eccrine poroma (large nodules connected to epidermis)
- eccrine acrospiroma (large dermal nodules)
- pilomatricoma (ghost cells)