Phakomatous Choristoma of Eyelid

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Abstract
• This article presents the sixth recorded example of phakomatous choristoma of the eyelid. The tumor occurred in a 4-month-old boy and was located in the lower lid near the inner canthus. The findings from light microscopy included epithelial, tubular structures with associated patches of thick, irregular basement membrane. The results of electron microscopy (ie, epithelial cells with a scarcity of organelles, homogeneous type of basement membrane, cytoplasmic microfilaments, segments of fascia occludens, and degenerated cells with peculiar interdigitations of their plasmalemmas) are all consistent with lenticular derivation, as originally proposed by Zimmerman.1

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