RT Journal Article SR Electronic T1 Reversible transverse sinus collapse in a patient with idiopathic intracranial hypertension JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr2014011606 DO 10.1136/bcr-2014-011606 VO 2015 A1 Halil Onder A1 Rahsan Gocmen A1 Yasemin Gursoy-Ozdemir YR 2015 UL http://casereports.bmj.com/content/2015/bcr-2014-011606.abstract AB The association of idiopathic intracranial hypertension (IIH) with stenosis or narrowing of the transverse sinuses (TSs) is well known. However, there is debate as to whether the stenosis is a cause or consequence. Here we describe a case of IIH and narrowing of the TSs, with four relapses and recoveries after repeated CSF diversions with lumbar puncture (LP) over 2 months. Subsequently, implantation of a lumboperitoneal shunt (LPrS) ensured recovery. MR venography 20 months after LPrS showed normally calibrated TSs. We show repeated MR venography findings before and after the LPs, and discuss the pathogenesis of IIH in terms of the cause and effect relationship between IIH and sinus collapse.