Abstract: This article deals with the role of arterio-venous conflicts in case of varicocele development in children. As varicocele is a widespread disease, it is important to investigate the etiology of hemodynamic disturbances in renotesticular (RTT) and ileotesticular (ITT) fields in patients with varicocele. The number of procedures registered in Russian State Pediatric Hospital (Moscow) is more than 1600 including primary and recurrent cases. Pathophisiology of the disease is not quite clear, but hemodynamic changes in RTT and ITT were thoroughly investigated. Left renal vein compression between upper mesenterial vein and aorta causes renal venous hypertension in 24% of cases. In most cases etiology of varicocele was primary valve insufficiency. Ileofemoral vericocele is rare and occurs as a result of common iliac vein flow disturbance. Endovascular procedures should be performed only after diagnostic hemodynamic study, and should not be used in pediatric practice. References 1. May R., Thurner J. The cause of the predominately sinistral occurrence of thrombosis of the pelvic veins. Angiology. 1957; 8: 419-427. 2. De Schepper A. Nutcracker phenomenon of the renal vein causing left renal vein pathology.J. Belg. Rad. 1972; 55: 507-511. 3. Trambert J.J. et al. Pericaliceal varices due to the nutcracker phenomenon. AJR. 1990; 154:305-306. 4. Scholbach T. From the nutcracker-phenome non of the left renal vein to the midline congestion syndrome as a cause of migraine, headache, back and abdominal pain and functional disorders of pelvic organs. Medical. Hypotheses. 2007; 68: 1318-1327. 5. Лопаткин Н.А., Морозов А.В., Житникова Л.Н. Стеноз почечной вены. М.: Медицина.1984. 6. Страхов С.Н. Варикозное расширение вен гроздевидного сплетения и семенного канатика (варикоцеле). М. 2001. 7. Kim et al. Hemodynamic Investigation of the Left Renal Vein in Pediatric Varicocele. Doppler US, Venography and Pressure Measurements. Radiology. 2006; 241. 8. Coolsaet l.E. The varicocele syndrome: Venography determining tin' optimal level for surgical management.J. Urol. 1980; 124: 833-839. 9. Ерохин А.П. Варикоцеле у детей (клинико-экспериментальное исследование). Дис. д-ра мед. наук. М. 1979. 10. Neglén А. et al. Stenting of the venous outflow in chronic venous disease. Long-term stent-related outcome, clinical and hemodynamic result.J. Vasc. Surg. 2007; 46: 979-990. 11. Гарбузов Р.В. Ретроградная эндоваскулярная окклюзия при варикоцеле у детей и подростков. Дис. канд. мед. наук. М. 2007
