Recurrent malignant pheochromocytoma with unusual omental metastasis: (68)Ga-DOTANOC PET/CT and (131)I-MIBG SPECT/CT scintigraphy findings.
Pheochromocytomas are rare catecholamine-secreting tumors derived from the sympathetic nervous system. The most common sites of metastasis for pheochromocytoma or extra-adrenal paraganglioma are lymph nodes, bones, lungs, and liver. Patients with known or suspected malignancy should undergo staging with computed tomography (CT) or magnetic resonance imaging as well as functional imaging (e.g. with (123)I/(131)I-MIBG ((131)I-metaiodobenzylguanidine) and (68)Ga-DOTANOC ((68)Ga-labeled [1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid]-1-NaI3-octreotide) positron emission tomography (PET)/CT) to determine the extent and location of disease. We present a case of recurrent malignant pheochromocytoma with unusual site of metastasis in omentum, which was positive on (68)Ga-DOTANOC PET/CT and (131)I-MIBG single-photon emission computed tomography (SPECT/)/CT scintigraphy.
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Saurabh
S
Arora
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Krishan Kant
KK
Agarwal
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Sellam
S
Karunanithi
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Madhavi
M
Tripathi
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Rakesh
R
Kumar
131I-MIBG; 68Ga-labeled [1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid]-1-NaI3-octreotide; Single-photon emission computed tomography/computed tomography; malignant pheochromocytoma; positron emission tomography/computed tomography