Coats disease with exudative retinal detachment simulating cysticercus cyst: misleading ultrasonography!

Description

A 5-year-old boy was brought to our clinic when parents noticed white reflex and divergent squint in the left eye. Snellen visual acuity was 20/20 in the right eye and inaccurate projection of rays in the left eye along with a 30 prism dioptre divergent squint in the latter. Anterior segment was within normal limits in both eyes on slit lamp evaluation. As the child was uncooperative for detailed fundus examination, we performed an ocular ultrasonography. Ocular ultrasonography of the left eye showed an intraocular cystic mass with a localised hyperechoic area adjacent to cyst wall which is typical of a cysticercus cyst with scolex (figure 1). On Optomap ultra-wide-field fundus photography (Optos, Scotland, UK) we found that the cystic mass on ultrasonography was actually a localised exudative retinal detachment and the scolex-like area of hyperechogenicity was a large confluent exudate collection in the subretinal...

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