[Merits of the assay of plasma catecholamines in a glucagon test to diagnosis of pheochromocytoma (author's transl)].

In one female patient suffering from an extra-adrenal pheochromocytoma, a stimulation test with glucagon was performed. In spite of the absence of an increase in heart rate and blood pressure, a pronounced increase in plasma catecholamines showed this test to be positive. The authors discuss the reliability criteria of this test, and confirm its good tolerance.