[Treatment of malignant pheochromocytoma by 131-I-metaiodobenzylguanidine].

Twelve patients (2 with only bone metastases, 3 with only soft tissues metastases and 7 with bone and soft tissues metastases) were treated with 131-I-MIBG (specific activity: 20 mCi/mg), 100 to 200 mCi every 3-6 months. A dosimetric study was carried out before each administration. The follow-up ranged from 6 to 24 months and the number of doses ranged from 1 to 8, with 1.