A Case of Moyamoya Syndrome with Subdural and Intracerebral Hematoma due to Different Bleeding Sources

One case with a moyamoya syndrome is reported in which each of an intracerebral and subdural hematoma was caused by different bleeding sources. At first, an intracerebral hematoma was made by rupture of moyamoya vessels per se. Then, distortion of the brain would have resulted in tearing of an aneurysm which had been formed by a overloading to its wall at one of transdural anastomotic channels. Thus a subdural hematoma was developed