Diplopia and Periorbital Mass Associated with Miragel Buckling Explant

A 28-year-old female presented with a palpable mass lesion on the superonasal aspect of her right globe and she had a progressive diplopia. She had a scleral encircling surgery with a Miragel explant (MIRA, Waltham, Mass, USA) for the tractional retinal detachment associated with pars planitis 9 years previously. On examination, she revealed restricted eye movements of her right eye. The magnetic resonance imaging documented a swelling of the Miragel explant that mimicked a periorbital mass lesion. The Miragel explant was removed and fragmentation of the explant was found intraoperatively. The removed Miragel explant was examined by a scanning electron microscopy, and this demonstrated a disintergrated and swollen structural composition of the Miragel explant. Postoperatively, her extraocular movement was almost restored and the retina remained well attached. Alterations in the structural composition of the Miragel explant results in an excessive swelling that causes a restriction of the extraocular movement, and this can mimick a periorbital mass lesion.

Corticosteróide sistêmico: potencial agente etiológico do pseudotumor inflamatório de órbita / Systemic corticosteróids: potencial ethiologic agent of orbital pseudomotor

Síndrome inflamatória idiopática da órbita compreende um grupo de condiçöes inflamatórias nas quais uma etiologia local ou sistêmica näo pode ser encontrada, sendo frequentemente referida como pseudomotor de órbita. Corticosteróides sistêmicos säo estabelecidos como tratamento primário para os pseudomotores de órbita. Um caso de pseudomotor é apresentado com desenvolvimento orbitário bilateral, confirmado através de exame histopatológico. Näo há evidência de tireoideopatia