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Objective.To estimate the clinical significance of compression syndromes accidentally detected by multislice computed tomography (MSCT) of the abdominal cavity and retroperitoneal space.Material and methods. Intravenous bolus contrast-enhanced MSCT study was performed in 645 patients with different diseases of the abdominal cavity and retroperitoneal space. The information obtained after analysis of diagnostic images was compared with clinical symptoms and, in some cases, with intraoperative data.Results. MSCT study identified prerequisites for the occurrence of compression syndromes in 71 (11%) patients of the study group, of whom 11 (15%) patients were noted to have relevant clinical manifestations. Surgical treatment was performed in 3 cases; medical treatment proved to be effective in the remaining 8 cases.Conclusion. Compression syndromes were diagnosed in 11 (1.7%) of the 645 patients examined by MSCT for different diseases of the abdominal cavity and retroperitoneal space. Their timely and adequate diagnosis could rule out other diseases with similar clinical manifestations and define optimal tactics.

Abnormalities of the inferior vena cava (IVC) and its tributaries are a very rare congenital defect with an incidence of 0.6 to 3% and a wide variety of anatomical variants. In most cases, it is an accidental diagnostic finding in patients undergoing examination for other pathologies. Not infrequently, the anatomic IVC variants are ignored at the stage of exploratory diagnostic assessment due to their rarity, difficulties of identification and perhaps insufficient awareness of a radiologist in this field. It is known that some IVC abnormalities are associated with certain symptoms, and others could be a predictor of deep vein thrombosis. The information on characteristics of the IVC anatomical structure is necessary during interventional manipulation on the retroperitoneal organs and vasculature, because the presence of an atypically located vessel can lead to significant variations in the surgery protocol and potential intraoperative complications. The problems of embryogenesis, classification, variant anatomy, clinical significance and diagnostics of various abnormalities of IVC and its tributaries are discussed in this review.