[Thrombosis and anatomic variants of intracranial dural venous sinuses]. / Tromboz i varianty stroeniya sinusov tverdoi mozgovoi obolochki.

A rather large number of different anatomic variants of intracranial dural venous sinuses are known, and they are found so often that interpreting them only as anomalies is unlikely, except for variations such as sinus aplasia or doubling, which can be attributed to anomalies of the venous system. Diameter reduction (hypoplasia) of the transverse and sigmoid sinuses is observed relatively often. In cases of dural sinuses anomalies, sinuses on the contralateral side are necessarily evaluated as the main source of compensation. When diagnosing dural sinus thrombosis, it is necessary to have a clear idea of the structure of the cerebral venous system, so as not to mistakenly accept hypoplasia or sinus aplasia for thrombosis. Our own experience is based on the results of a neuroimaging study of cerebral veins and venous sinuses in 103 patients (average age 35±10 years) with a tension-type headache. Hypoplasia of the transverse and sigmoid sinuses was detected in 21 (22.4%) cases. In 10 cases (6 men, 4 women), a connection was established between hypoplasia of the dural sinuses and thrombosis. Four patients, presented with hypoplasia of the right transverse and sigmoid sinuses and 6 patients with hypoplasia of the left transverse and sigmoid sinuses. Thrombosis developed on the side of sinus hypoplasia (9 patients) or on the contralateral side (1 patient). Early diagnosis of cerebral venous thrombosis is crucial because the use of anticoagulants reduces the risk of a poor prognosis, severe disability without an additional increase in the risk of brain hematomas progression.

[Clinical presentations, diagnosis and treatment of cerebral vein and sinus thrombosis]. / Klinika, diagnostika i lechenie tromboza mozgovykh ven i venoznykh sinusov.

The problem of thrombosis of cerebral veins and venous sinuses is insufficiently studied. The real incidence of cerebral venous thrombosis remains incompletely defined. The article presents results of clinical research on cerebral vein and sinus thrombosis, which served as a ground for an analysis of causes and development of the disease. In 20-35% of patients with cerebral venous thrombosis, this disease remains idiopathic after extensive investigation. Particular attention is given to risk factors, clinical presentations, early diagnosis, treatment, prognosis of cerebral vein and sinus thrombosis.