Kato Yuji, Takeda Hidetaka, Furuya Daisuke, Nagoya Harumitsu, Deguchi Ichiro, Fukuoka Takuya, Tanahashi Norio
Department of Neurology and Cerebrovascular Medicine, Saitama International Medical Center, Saitama Medical University.
Intern Med. 2010;49(5):467-70. doi: 10.2169/internalmedicine.49.2789. Epub 2010 Mar 1.
Cerebral venous thrombosis presenting as subarachnoid hemorrhage (SAH) is very rare. We present a woman with thrombosis of the superior sagittal, straight, transverse and sigmoid sinuses who presented with SAH in the right temporal sulcus and bilateral cerebellar sulci. Brain perfusion CT demonstrated a delay of the mean transit time and high cerebral blood volume around the right posterior temporal lobe and cerebellum. These findings were compatible with venous congestion and they suggest the possibility that extension of the dural sinus thrombosis into the superficial veins caused localized venous hypertension with dilatation of the thin, fragile-walled cortical veins which eventually ruptured into the subarachnoid space.
表现为蛛网膜下腔出血（SAH）的脑静脉血栓形成非常罕见。我们报告一名患有上矢状窦、直窦、横窦和乙状窦血栓形成的女性，其蛛网膜下腔出血出现在右侧颞沟和双侧小脑沟。脑灌注CT显示右侧颞叶后部和小脑周围平均通过时间延迟且脑血容量增加。这些发现与静脉充血相符，并提示硬脑膜窦血栓扩展至浅表静脉导致局部静脉高压，使壁薄且脆弱的皮质静脉扩张，最终破裂进入蛛网膜下腔的可能性。
