Sir:FigurePoly-L-lactic acid, marketed as Sculptra (Sanofi-Aventis, Bridgewater, N.J.), is a commonly used dermal filler for treatment of lipoatrophy and facial aging. Complications of poly-L-lactic acid injection are rare, with the most common being temporary bruising and swelling and the formation of subcutaneous papules.1,2 We report the case of a 59-year-old woman who presented with depleted malar volume and facial aging and who desired management with dermal fillers. The patient's medical history was significant for hypertension for which she was taking lisinopril, and she denied any history of medication allergies or sensitivities. Local anesthesia was achieved with 1% lidocaine with 1:100,000 epinephrine and topical lidocaine/prilocaine. Poly-L-lactic acid was injected into the bilateral malar areas, marionette lines, nasolabial folds, and periorally. Cross-linked hyaluronic acid plus lidocaine was used for lip augmentation. The patient returned to the clinic approximately 2 hours later with significant edema of the lips and perioral area (Fig. 1). She was transported immediately to the hospital, where she was admitted and treated with intravenous corticosteroids, famotidine, and diphenhydramine. The swelling resolved slowly, and she was discharged to home after 24 hours. The patient returned to the clinic 1 week later with satisfactory resolution of her edema (Fig. 2). The patient later had revision hyaluronic acid dermal injections with no adverse effect.Fig. 1: The patient showed lip and perioral edema 2 hours after injection.Fig. 2: The patient is shown 1 week postoperatively, with satisfactory resolution of the edema.In this patient with severe angioedema following the use of dermal fillers, there are two types of angioedema that must be considered: allergic and angiotensin-converting enzyme inhibitor related. Allergic angioedema is considered a type I or immediate hypersensitivity reaction and occurs following immunoglobulin E–mediated release of histamine, leukotrienes, and prostaglandins. This leads to vasodilation and extravasation of fluid from the vasculature into the subcutaneous tissue, resulting in edema, often in the head and neck.3 Angioedema caused by angiotensin-converting enzyme inhibitor is thought to occur by means of an accumulation of bradykinin in predisposed individuals using an angiotensin-converting enzyme inhibitor, which increases vascular permeability, resulting in edema of the face, lips, upper airway, and gastrointestinal tract.3 This can occur hours to years after starting an angiotensin-converting enzyme inhibitor.3,4 Local trauma can also induce a bradykinin response, which may be synergistic with the angiotensin-converting enzyme inhibitor, and angiotensin-converting enzyme inhibitor angioedema has been reported to occur after intubation, dental procedures, and lip biting.5 Immediate hypersensitivity reactions to dermal fillers are uncommon. To our knowledge, dermal fillers have not been described to induce an angiotensin-converting enzyme inhibitor angioedema, although certainly one would expect bradykinin release after a dermal injection. In the case of our patient, the fact that she received subsequent injections of hyaluronic acid without any adverse effect suggests that the angioedema may have been an effect of the poly-L-lactic acid itself. Patients undergoing injections with poly-L-lactic acid should be advised of a possible allergic reaction and monitored appropriately. In addition, practitioners administrating dermal fillers to patients on angiotensin-converting enzyme inhibitor therapy should be aware of the fact that the local trauma from injection could potentially induce angiotensin-converting enzyme inhibitor angioedema. This also has implications for the injection of dermal fillers by marginally or unsupervised aestheticians or injectors, as severe adverse reactions such as this can be fatal if not managed appropriately. Elizabeth Guardiani, M.D. Department of Otolaryngology–Head and Neck Surgery Steven P. Davison, M.D. Department of Otolaryngology–Head and Neck Surgery, Department of Plastic Surgery, Georgetown University Hospital, Washington, D.C. DISCLOSURE The authors have no financial interests to disclose. PATIENT CONSENT The patient provided written consent for the use of her images.
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