Inflammatory mass formation secondary to hydroxyapatite orbital implant leakage.

A 28-year-old woman with a history of an hydroxyapatite implantation performed 2 years earlier, presented with complaints of a poorly fitting prosthesis, and fullness of the left upper eyelid accompanied by eyelid erythema. Computed tomography scan showed a mass adjacent to the implant medially. Surgical removal of the implant and mass was performed. Histological examination of the implant revealed degradation on the medial side of the implant while the mass consisted of fibrous tissue with chronic inflammation and lymphoid follicle formation around a foreign material.