[Diagnosis of mediastinal neuro-endocrine tumor using endosonography guided transesophageal puncture biopsy]

Histologic diagnosis of tumors of the mediastinum is mandatory for therapeutic management. The location and the variety of tumors are responsible for diagnostic difficulties. Endosonography guided fine-needle biopsy is an efficient and safe procedure for the diagnosis of peridigestive masses. We report the case of a patient with a neuroendocrine tumor of the mediastinum revealed by a mass syndrome. The diagnosis was performed by endosonography guided needle biopsy.