[Clinical usefulness of 99mTc-PMT whole body scans in the diagnosis of bone metastases from hepatocellular carcinoma].
The diagnostic value of whole body scanning using 99mTc-N-pyridoxylmethyltryptophan (PMT) was evaluated in 16 patients with bone metastases from hepatocellular carcinoma, in comparison with 99mTc-MDP. Of the 72 known lesions of bone metastases, 63 (87.5%) were detected by 99mTc-PMT scintigraphy, which demonstrated increased uptake of radionuclide. However, 99mTc-MDP bone scintigraphy detected only 45 lesions (62.5%), which were shown as increased, decreased, or mixed patterns of uptake. Thus 99mTc-PMT scintigraphy was more sensitive than 99mTc-MDP bone scintigraphy. In addition, the latter showed poor specificity because of its high false positive rate due to degenerative change. All lesions undetected by 99mTc-PMT scintigraphy were located in areas that overlapped the liver or bowel activity. In conclusion, it is recommended that whole body 99mTc-PMT scintigraphy be combined with 99mTc-MDP bone scintigraphy for the detection of bone metastases from hepatocellular carcinoma.
Nakanishi
Y
Y
Department of Radiology, Kansai Medical University.
Ha-Kawa
S K
SK
D000368:Aged; D000369:Aged, 80 and over; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000556:secondary*; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000556:secondary*; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D011759:Pyrrolidines; D011877:Radionuclide Imaging; D012189:Retrospective Studies; D013752:Tetracycline; D013754:Tetracyclines
D015609:Organotechnetium Compounds; D011759:Pyrrolidines; D013754:Tetracyclines; C057732:technetium Tc 99m pyrrolidino-methyltetracycline; D013752:Tetracycline