In extradigital glomus tumors, (1) noncontact and (2) contact dermoscopy show (1) a central purplish-white area corresponding to tumor nests surrounding enlarged vessels, a peripheral yellow-white area corresponding to mucin deposition, melanin granules, and fibrous tissue, and (2) white reticular and linear cord areas corresponding to pseudocapsules and collagen fibers.
Keywords: back; dermatopathology; dermoscopy; glomus tumor; pseudocapsule.
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