非機能性傍神経節腫

NON-FUNCTIONING PARAGANGLIOMA

　44歳女性。糖尿病と慢性肝炎で入院中に腹部CTで左腎上部に腫瘍を発見された。血圧正常，尿中昇圧アミン正常，¹³¹I-MIBGシンチでは腫瘍への取込みはなかつた。左副腎腫瘍の疑いで手術したが，腫瘍は左副腎とは別に存在し，366gの腫瘍を完全摘除した。組織学的には傍神経節腫であつた。混乱のある傍神経節腫の分類を整理し，発生部位別の解剖学的分類が最も適切であることを強調した。

The patient is a 44-year-old woman in whom abdominal CT revealed a tumor in the left upper renal region during her hospitalization for diabetes and chronic hepatitis. Blood pressure and urine pressor amine of every sort were normal, and ¹³¹I-MIBG scintigraphy revealed no ¹³¹I uptake by the tumor. Left adrenal tumor was suspected, however, operation confirmed a tumor weighting 366 g in-dependent from the left adrenal gland. Histologically, the tumor was paraganglioma. In spite of con-fusing classification of paraganglioma, the authors emphasized that the anatomical classification by original sites was most appropriate.