Abstract
A 7-month-old girl with delayed milestones was referred for suspected retinoblastoma (RB). She lacked visual fixation. Fundoscopy revealed small RBs (diameter ≤ 6 mm) in both eyes. Ultrasonography confirmed hyperechoic intraocular tumors in her right (A, arrowhead) and left (B, arrowheads) eyes. Magnetic resonance imaging revealed bilateral multifocal RBs (C, arrowheads), and a large (46 × 37 × 41 mm) intrasellar/suprasellar mass (C and D, asterisk, arrows), compressing the lateral and third ventricles (D, dotted arrows), extending into the cavernous sinus (C and D, arrows), suggestive of primitive neuroectodermal tumor associated with RB, namely trilateral RB. (Magnified version of Figure A-D is available online at www.aaojournal.org).
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