Extra-Adrenal Retroperitoneal Paraganglioma

**Semantic type:** Neoplastic Process

**Definition:** A sympathetic paraganglioma arising from the retroperitoneum, outside the adrenal gland.

**Synonyms:** - Paraganglioma of Extra-Adrenal Retroperitoneal Area - Paraganglioma of the Extra-Adrenal Retroperitoneal Area