TY - JOUR T1 - Benign pineal cyst lined with normal choroid plexus mimicking tumour in a young girl with exotropia JF - BMJ Case Reports DO - 10.1136/bcr-2015-214170 VL - 2016 SP - bcr2015214170 AU - Yuanfan Yang AU - Michael L Levy AU - John Ross Crawford Y1 - 2016/01/25 UR - http://casereports.bmj.com/content/2016/bcr-2015-214170.abstract N2 - A 4-year-old girl presented with a 4-month history of progressive exotropia. There was no headache, no impaired upgaze, no nystagmus and no vision changes. Complete neurological examination was otherwise normal. MRI of the brain revealed a 1.5 cm cystic lesion in the pineal region. The cyst had a smooth margin lined by a thin wall of <1 mm that was homogenously enhancing on contrast scan. Compared to cerebrospinal fluid, the cyst content was isointense in T1 and hyperintense on T2-weighted images (figure 1). The … ER -