Benign lesions - sebaceous hyperplasia

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 Editor: Richard Usatine

Author(s): Rachel Manci, Richard Usatine
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Sebaceous hyperplasia[edit]

Sebaceous hyperplasia represents enlarged sebaceous glands principally found on the forehead, cheeks and nose in older adults. They can be found in persons of all skin colors and are typically 2 to 5 mm in diameter with a yellowish-white color and a light brown central opening. Due to some prominent vessels they may be mistaken for a basal cell carcinoma. Fortunately, dermoscopy almost always allows us to distinguish them from a BCC.

Dermoscopic features of sebaceous hyperplasia in all skin types include:[1]

  • White to yellowish-white globules that resemble popcorn in appearance. When the color is more yellow think of them as buttered popcorn (the butter is the sebum).
  • Crown vessels are fine branching vessels that are more prominent on the periphery and do not cross the midline.
  • Light brown central umbilication of the pilosebaceous unit. It has been described having the appearance of a round Bonbon caramel toffee.[2]


References[edit]

  1. Zaballos et al.: Dermoscopy of sebaceous hyperplasia. Arch Dermatol 2005;141:808. PMID: 15967945. DOI.
  2. Oztas et al.: Bonbon toffee sign: a new dermatoscopic feature for sebaceous hyperplasia. J Eur Acad Dermatol Venereol 2008;22:1200-2. PMID: 18540985. DOI.