Clinical analysis of treatment and diagnosis of perimesencephalic nonaneurysmal subarachnoid hemorrhage (report of 43 cases)

ObjectiveTo explore the clinical features, treatment and prognosis of patients with perimesencephalic nonaneurysmal subarachnoid hemorrhage(PMSAH).MethodsThe clinical data of 43 patients with PMSAN who admitted to our hospital from December, 2011 to November 2012 were analyzed retrospectively.ResultsCT within 48 hours after the hemorrhage showed that there was SAH in all the patients. The outcomes of digital subtraction angiography of the cerebral vessels within 72 hours after the hemorrhage were megative in all patients. Two weeks later, 2 patients and 41 patients were reexamined by digital subtraction angiography and 320-slice CT angiography, respectively and the outcomes in all the patients also were negative. All the patients received conservative treatment. All the patients were followed up from 6 months to 12 months. No rebleeding occurred in all patients, who were recovered well.ConclusionsPMSAH is vasculogenic disease with equivocal pathogenicity. There are slight symptoms less complications, low rate of rebleeding and good prognosis in the patients with PMSAH.