Detectability of the choroid plexus of the third ventricle with magnetic resonance ventriculography.

PURPOSE: To clarify the detectability of the choroid plexus of the third ventricle (ChPl3V) with magnetic resonance ventriculography (MRVn) employing a steady-state free precession (SSFP) sequence in comparison to surgical endoscopic movies as a golden standard, as we encountered some clinical cases of total agenesis of corpus callosum (ACC) where we could not recognize the choroid plexus of the third ventricle and found no previous article addressing this problem. MATERIALS AND METHODS: This retrospective study included consecutive patients from 2010 to 2016 for whom endoscopic evaluation of the third ventricle was conducted. The anterior portion of the right and left streaks of ChPl3V was evaluated in 8 patients on 16 sites, while the posterior portion of both streaks of ChPl3V was evaluated in 13 patients on 26 sites. Sensitivity of MRVn to visualize ChPl3V with endoscopic movies as the golden standard was calculated. RESULTS: Sensitivity of MRVn in visualizing the anterior portion of ChPl3V was 0.813, and that for the posterior portion 0.692. The anterior portion of ChPl3V was visualized in all cases where no tumor contacted the foramen of Monro. CONCLUSION: MRVn visualizes the anterior portion of ChPl3V with significant sensitivity and the posterior portion with lower one.

Urokinase lysis for acute left subclavian artery thrombosis after placement of infusion catheter: report of two cases.

We present two cases of acute subclavian and/or axillary arterial occlusion after transaxillary catheterization with an implantable port for hepatic arterial infusion chemotherapy. They were successfully treated with thrombolytic therapy using intraarterial administration of urokinase without removal of the infusion catheter system. We consider that this treatment is suitable for managing acute thrombosis of the conduit artery after catheterization for hepatic arterial infusion chemotherapy.