Tc-99m TRODAT uptake in an osteoid tumor of clivus.
Tc-99m TRODAT is cocaine analog and binds to the dopamine transporterin vivo. Tc-99m TRODAT single-photon emission computed tomography/computed tomography. (SPECT/CT) is useful for demonstrating presynaptic dopaminergic dysfunction in patients with Parkinsonism. However, few reports have shown extrastriatal uptake of Tc-99m TRODAT. We present the case of a 67-year-old male who underwent Tc-99m TRODAT SPECT/CT for evaluation of Parkinsonism. In addition to tracer binding in the striatum, tracer uptake was noted in an osteoid tumor of the clivus. Integrated SPECT/CT enabled precise localization and characterization of the extrastriatal site of tracer binding and emphasizes the importance of such coincidental findings.
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Sameer
S
Taywade
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Madhavi
M
Tripathi
Department of Neurosurgery, CN Centre, All India Institute of Medical Sciences, New Delhi, India.
Vivek
V
Tandon
Department of Radiology, All India Institute of Medical Sciences, New Delhi, India.
Chandan Jyoti
CJ
Das
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Nishikant Avinash
NA
Damle
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Shamim Ahmed
SA
Shamim
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Parul
P
Thukral
Department of Nuclear Medicine and PET/CT, All India Institute of Medical Sciences, New Delhi, India.
Chandrasekhar
C
Bal
Osteoid tumor; Parkinson's disease; Tc-99m TRODAT; single-photon emission computed tomography/computed tomography