Mechanical Thrombectomy in Cerebral Venous Thrombosis Caused by Spontaneous Intracranial Hypotension: A Case Report with Novel Pathological Findings of Fibrin/Platelet-predominant Thrombus

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This case report presents pathological findings in a rare case of cerebral venous thrombosis (CVT) caused by spontaneous intracranial hypotension (SIH) that was treated successfully with mechanical thrombectomy. The etiologies and prognosis of CVT vary, and CVT resulting from SIH is particularly uncommon and challenging to diagnose and manage. In this case, magnetic resonance imaging revealed signs consistent with both SIH and CVT, which contributed to the patient’s worsening weakness. The patient was treated with a combination of endovascular thrombectomy and epidural blood patch, followed by anticoagulation therapy, and recovered without any complications. A pathological analysis of the retrieved thrombus using hematoxylin and eosin staining showed a high proportion of fibrin and platelets, which could shed light on the mechanism of CVT induced by SIH under conditions of low blood flow due to venous engorgement.

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