肺原発傍神経節腫の1例

Primary Pulmonary Paraganglioma：Report of a Case

はじめに　傍神経節腫（paraganglioma）は副腎以外の傍神経節組織から発生するカテコラミン産生腫瘍で，頭頸部，後腹膜・傍大動脈領域に好発し，肺原発のものはまれである．われわれは，肺原発傍神経節腫の手術症例を経験したので報告する．

A 60-year-old woman with a lung tumor was admitted to our hospital for surgical treatment. Chest computed tomography （CT） showed a 23×21×20 mm nodule in the right lower lobe. Although the lung nodule was thought to be benign due to CT image findings, its size was apparently larger than that of CT image at four years ago. So, we decided to resect the nodule and performed a partial lung resection under video-assisted thoracic surgery. The tumor was histopathologically diagnosed as a paraganglioma and scored 0 point in pheochromocytoma of the adrenal gland score （PASS）. Since no abnormal uptake that indicates primary site was not found on fluorodeoxyglucose-positron emission tomography （FDG-PET） performed after surgery, we diagnosed this tumor as a primary pulmonary paraganglioma. She is still alive without recurrence.