Poly-lactic acid is sometimes used as a dermal filler. The lesion presented in this case is that of a reaction to exogenous material. While the histology is suggestive of poly-lactic acid, clinico-pathologic correlation is needed for confirmation.
Weill Cornell Medicine Dermatopathology
1300 York AvenueRoom F-309Box #58
New York, NY 10065
Phone: (212) 746-6434