Heckemann R, Weichert H C, Röttinger E M, Hossfeld D K
Rofo. 1977 Mar;126(3):236-40. doi: 10.1055/s-0029-1230571.
In a retrospective study the chemotherapeutic response of retroperitoneal tumours was controlled by means of ultrasound and lymphangiography 34 patients. It could be demonstrated that ultrasound is a reliable tool for the evaluation of bulky retroperitoneal tumours, frequently undetectable by lymphangiography. The reliability was better than 90%.