RT Journal Article SR Electronic T1 The imploding antrum syndrome: an unusual cause of double vision JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 101 OP 104 DO 10.1136/jnnp.2010.206102 VO 10 IS 2 A1 Karen Stevens A1 Salah Omer A1 Brenda Toocaram A1 Philip Rich A1 Ali Almemar YR 2010 UL http://pn.bmj.com/content/10/2/101.abstract AB A 42-year-old man presented with a 3 day history of drooping of the right eyelid and intermittent double vision. He was found to have mechanical restriction of the left eye in elevation and MRI demonstrated an abnormality in the left maxillary sinus with descent of the left inferior rectus muscle. CT confirmed the diagnosis of ‘imploding antrum’ or ‘silent sinus’ syndrome. It was treated surgically with complete resolution of symptoms and signs.