|Classification and external resources|
Micrograph of a dermal cylindroma. H&E stain.
Multiple cylindromas may grow together in a "hat-like" configuration, the so-called "turban tumor." Cylindromas are uncommon dysplasias of skin appendages.
Dermal cylindromas are:
- dermal lesions consisting of nests of cells that are surrounded by hyaline (i.e. glassy, eosinophilic, acellular) material and have:
- hyperchromatic nuclei that may palisade (columnar nuclei arranged around the periphery of the cells nests - with their short axis tangential to the nest periphery), and
- cells with lighter staining ovoid nuclei at their centre.
They lack of a significant number of lymphocytes; this differentiates them from spiradenomas.
Micrograph of dermal cylindroma in H&E stain.
Dermal cylindroma. Hyaline droplets visible in lobules.
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