Study of variations in the anatomy of the deep femoral vein using indirect CT phlebography

Aim of the study was to evaluate the features of the anatomy of the deep vein of the femur according to CT-phlebography data. Material and methods. The data of CT-phlebography of 100 limbs of 50 patients (27 women, 23 men, mean age 39 years, age range 28–46 years) obtained in 2021–2023 were used as the basis of the work. The study was performed according to the original technique (patent of the Russian Federation N 2799023) on a 128-slice multispiral computed tomography scanner, with slice thickness of 0.5 mm, intravenous injection of contrast agent. The diameter of the femoral deep vein at different levels, the presence of additional trunks and its anastomoses with other segments of deep and superficial veins were evaluated. Results. True doubling of the femoral deep vein occurs with a frequency of 6 %, anastomoses of the femoral deep vein with the femoral-pubic segment of deep veins in 62 % cases. Variant anatomy with direct transition of the femoral or popliteal vein into the femoral deep vein occurs in 13 % of observations. Conclusions. The data on variant anatomy of the deep vein and its tributaries may be of practical importance when it is necessary to diagnose or choose the technique of surgical intervention in patients with venous diseases of the lower extremities.