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Dermal cylindroma

Dermal cylindroma
FieldValue
nameDermal cylindroma
imageSequeira Plate 51.jpg
captionDermal cylindroma treated with X-rays without recurrence

| In dermatologic pathology, a dermal cylindroma, also dermal eccrine cylindroma or cutaneous cylindroma) and (less specifically) cylindroma, is a benign adnexal tumor that occurs on the scalp and forehead.

Multiple cylindromas may grow together in a "hat-like" configuration, sometimes referred to as a turban tumor. Cylindromas are uncommon dysplasias of skin appendages.

Histology

Micrograph of a cylindroma. H/E stain

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 cell 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.

Additional images

Dermal cylindroma intermed mag.jpg|Micrograph of a dermal cylindroma in H&E stain. File:Dermal cylindroma high mag.jpg|Micrograph of dermal cylindroma in H&E stain. File:SkinTumors-P7240511.JPG|Dermal cylindroma. Puzzle-like distribution of tumour foci. File:SkinTumors-P7130483.JPG|Dermal cylindroma. Hyaline droplets visible in lobules. File:SkinTumors-P6250384.JPG|Dermal cylindroma, micronodular type.

References

References

  1. (2006). "Andrews' Diseases of the Skin: clinical Dermatology". Saunders Elsevier.
  2. {{DorlandsDict. two/000026657. Cylindroma
  3. (14 July 2021). "Cylindroma: Background, Pathophysiology, Epidemiology".
  4. {{EMedicine. derm. 94. Cylindroma
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epidermal-nevi,-neoplasms,-and-cysts
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