RT Journal Article
SR Electronic
T1 Extraosseous Metastases Masquerading as Urine Contamination on Bone Scans
JF Journal of Nuclear Medicine Technology
JO J. Nucl. Med. Technol.
FD Society of Nuclear Medicine
SP 87
OP 89
VO 19
IS 2
A1 Gelman, Russell
A1 Alexander, Michael S.
A1 Sorandes, Theodore P.
YR 1991
UL http://tech.snmjournals.org/content/19/2/87.abstract
AB Urine contamination is probably the most common cause of focal soft-tissue activity in the pelvis, thigh or legs as seen on a radionuclide bone scan. We report two cases of focal soft-tissue activity which were initially thought to represent urine contamination but were later proven to be extraosseous metastases. We present these two cases to illustrate that soft-tissue activity which is presumed to be caused by urine contamination must always be verified by washing off the suspected area and then obtaining an additional image to see if the activity has been removed or persists. This is particularly important in patients with primary malignant bone tumors and in tumors which have a propensity to produce calcification.