131I-MIBGの集積を示した異所性褐色細胞腫の1例

A CASE OF ECTOPIC PHEOCHROMOCYTOMA REVEALED ACCUMULATION OF 131I-MIBG

緒言

　褐色細胞腫のうち異所性，多発性，悪性の頻度はそれぞれ約10％とされ^1），局在診断，治療が困難である。近年，¹³¹I Meta-iodobenzylguanidine（以下MIBGと略す）が褐色細胞腫の局在診断に極めて有用であると報告されているが，今回われわれは¹³¹I-MIBGの著明な集積を認めた異所性褐色細胞腫の1例を経験したので報告し，若干の考察を述べる。

A 41-year-old female was admitted, as a routine preoperative IVP taken during hospitalization for uterine myoma had shown a left renal mass. At her admission, it was found by chance that urinary VMA was positive with paroxysmal hypertensive attack. After a series of endocrinological and roentgenological examination, a diagnosis of pheochromocytoma originated from left adrenal gland became almost certain and radioisotope accumulated at the left adrenal region specifically on ¹³¹I-MIBGscintigraphy.