Paragangliomas are rare tumors arising from extraadrenal chromaffin cell and accounting for 10 ~ 48 % of all chromaffin tissue - related tumors and one tenth of pheochromocytomas 摘要副神经节瘤为罕见的原发于肾上腺外嗜铬细胞的肿瘤，约占所有原发于嗜铬细胞肿瘤的10 ~ 18 % ；发生率也只有肾上腺嗜铬细胞瘤的十分之一。
