DR. MANISHIKAA T

DR.R. R. MALARVIZHI, DR. SUDARVIZHI A

Abstract

A 50 year old female presented with protrusion of RE for 2 months with headache and eye pain with diplopia.She had BCVA of 6/9 in RE and 6/6 in LE.She had exotropia of 60 PD with normal anterior segment examination and IOP.Fundus examination showed mild temporal pallor in RE.B scan showed well encapsulated lesion with moderate reflective echoes abetting optic nerve in infero lateral aspect in intraconal region.MRI showed T1/T2 hypointense lesion with no adjacent bony erosion noted.Excision of lesion done by lateral orbitotomy through transconjunctival approach. HPE section showed tumour cells with abundant granular cytoplasm with centrally placed round nucleus corresponding with granular cell tumour.IHC of lesion showed s-100 and CD 68 positivity confirming GCT.Post op,visual acuity improved to 6/ 6 with residual exotropia and patient symptomatically improved. GCT,very rare,its incidence being3%in orbit, should be considered in patients with orbital masses involving inferior rectus.