False-positive iodine-131 body scan caused by a large renal cyst.
Focal I-131 accumulation is generally a reliable indicator of functioning thyroid tissue or a differentiated thyroid cancer metastasis. Normal accumulation of activity may be seen in areas such as the intestinal tract, liver, and salivary glands. This report describes a patient with significant accumulation of I-131 in the right upper quadrant of the abdomen. The abnormality, first thought to represent metastatic thyroid carcinoma, was subsequently proven to be accumulation within a large renal cyst.
Brachman
M B
MB
Department of Nuclear Medicine, Cedars-Sinai Medical Center, Los Angeles, California 90048.
Rothman
B J
BJ
Ramanna
L
L
Tanasescu
D E
DE
Adelberg
H
H
Waxman
A D
AD
D000008:Abdominal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000556:secondary*; D003937:Diagnosis, Differential; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011859:Radiography; D011877:Radionuclide Imaging; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging*
D007457:Iodine Radioisotopes