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Indian J Nucl Med. 2019 Jan-Mar;34(1):74-75. doi: 10.4103/ijnm.IJNM_113_18.

Technetium-99m Labeled Tropane Derivative: Uptake in a Pituitary Macroadenoma.

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Department of Nuclear Medicine and Positron Emission Tomography, All India Institute of Medical Sciences, New Delhi, India.
Department of Neurology, CN Centre, All India Institute of Medical Sciences, New Delhi, India.


We present a case of suspected idiopathic Parkinson's disease in whom extrastriatal accumulation of Technetium-99m labeled tropane derivatives in a pituitary macroadenoma interfered with image quality and interpretation. Subsequent F-18 fluoro-dihydroxyphenylalanine positron emission tomography/computed tomography was useful to demonstrate the absence of presynaptic dopaminergic dysfunction.


Fluoro-dihydroxyphenylalanine; Parkinson disease; pituitary macroadenoma; single-photon emission computed tomography/computed tomography; technetium-99m labeled tropane derivatives

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