• Junkoh Yamamoto, Shingo Kakeda, Masaru Idei, Yoshiteru Soejima, Daisuke Akiba, Eiji Shibata, and Yukunori Korogi.
• Department of Neurosurgery, University of Occupational and Environmental Health, Kitakyushu, Japan.
• J Emerg Med. 2013 Dec 1;45(6):849-55.

BackgroundCerebral venous thrombosis (CVT) rarely induces subarachnoid hemorrhage (SAH). During late pregnancy and puerperium, CVT is an uncommon but important cause of stroke. However, severe SAH resulting from CVT is extremely rare during early pregnancy.ObjectiveWe report on a rare case of severe SAH due to CVT, and discuss the potential pitfalls of CVT diagnosis in early pregnancy.Case ReportA 32-year-old pregnant woman (9th week of pregnancy) presented with slight head dullness. Initial magnetic resonance imaging (MRI) revealed focal, abnormal signal intensity in the left thalamus. Nine days later, the patient developed a generalized seizure and severe SAH was detected with computed tomography (CT) scan. MRI and cerebral angiography revealed a completely thrombosed superior sagittal sinus, vein of Galen, straight sinus, and right transverse sinus. Transvaginal sonography indicated a missed abortion. The day after admission, the patient presented again with a progressive loss of consciousness and signs of herniation. The patient underwent emergency decompressive craniotomy, followed by intrauterine curettage. Two months later, she made an excellent recovery except for a slight visual field defect.ConclusionsA rare case of severe SAH due to CVT is reported, with emphasis on the potential pitfalls of CVT diagnosis in early pregnancy.Copyright © 2013 Elsevier Inc. All rights reserved.

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