Angiography in the diagnosis of retroperitoneal and mediastinal chemodectomas. Report of two cases.

Two cases of angiographically demonstrated chemodectomas of uncommon locations and behavior are reported: one located retroperitoneally and one with multi-centric sites including both carotid bodies and the upper mediastinum, with late distant bone metastases. Based on this experience and that reported by others, the angiographic appearance of chemodectomas is described and the value of angiography in the diagnosis and therapy of chemodectomas is discussed.