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Benign pineal cyst lined with normal choroid plexus mimicking tumour in a young girl with exotropia
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  1. Yuanfan Yang1,
  2. Michael L Levy2,
  3. John Ross Crawford3
  1. 1Peking Union Medical College Hospital, Dongcheng-Qū, Beijing, China
  2. 2Department of Neurosurgery, University of California San Diego, San Diego, California, USA
  3. 3Department of Neurosciences and Pediatrics, University of California San Diego, San Diego, California, USA
  1. Correspondence to Dr John Ross Crawford, jrcrawford{at}ucsd.edu

http://dx.doi.org/10.1136/bcr-2015-214170

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    Description

    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 …

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