In the emergency department of a multidisciplinary regional hospital, a pregnant woman arrives urgently with an ambulance, the term is 26 weeks.Suffers from varicose veins of the lower extremities for a long time, has not been examined and has not been consulted about the disease.Complaints from the patient on the compaction and hyperemia of the great saphenous vein, progression to the s / w of the thigh. Ultrasound Dopplerography (USDG) was performed, and appropriate tests were taken. Acute ascending thrombophlebitis was diagnosed.An urgent consultation of doctors was held. Taking into account the severity of the diagnosis, the decision of the council made an emergency operation: a crossectomy on the left.The operation was successful, with the participation of angiosurgeons of the Department of Cardiovascular Surgery Amirkhan Assel Omirkhanovna and Izbaskhanov Rakhmanberda Tulegenovich.In the postoperative period, the general condition of the patient is stable.