The role of131I-19-iodocholesterol scintigraphy and ultrasonography in the localization of a poorly vascularized phaeochromocytoma

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Abstract
Cases have been reported in which phaeochromocytomas have been identified by adrenal gland scintigraphy with l3lI-19-iodocholesterol (or other steroid analogues) as well as by ultrasound (Sturman et al., 1974; Helber et al., 1975; Troncone et al., 1977; Sample, 1978; Thralls et al., 1978; Chatal et al., 1979). However the role of these techniques, and in particular of adrenal imaging, in the localization of medullary tumours is still far from established. The case reported here, concerning a patient with a surgically proven adrenal phaeochromocytoma, further supports the value of the radioisotopic procedure and the ultrasound studies in this field. In fact they succeeded in lateralizing correctly the tumour which was not visualized by selective arteriography, because of its minimal vascularity.

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