Granulomatous foreign body reaction to dermal cosmetic fillers with intraoral migration.

[OBJECTIVE] We report intraoral granulomatous foreign body reactions in patients treated with calcium hydroxylapatite (CHA) or poly-l-lactic acid (PLA).

[STUDY DESIGN] Clinical and histopathologic data were obtained from 25 patients who developed orofacial nodules or swelling after dermal filler injections.

[RESULTS] All 25 patients were women aged 35 to 78 years (median, 55 years). All had a history of injection of CHA (n = 13) or PLA (n = 12) to the lips, nasolabial area, or mental area. Two patients developed cutaneous nodules at the sites of injections; all others presented with intraoral nodules (labial/buccal or vestibular mucosa) distant from the site of injections, suggestive of filler migration. Five of 21 cases presented with pain. Histopathologically, CHA presented as a diffuse mass of mauve-gray or beige, nonrefractile spherules, and PLA as rice- or spindle-shaped, geometric, refractile bodies within circumscribed nodules.

[CONCLUSIONS] Cutaneous injections of CHA and PLA fillers may induce granulomatous reactions presenting as intraoral nodules distant from the injection sites.