Comparison and discrepancy of 18F-2-deoxyglucose positron emission tomography and Tc-99m MDP bone scan to detect bone metastases.
The purpose of this study was to evaluate the usefulness of positron emission tomography with 18F-2-deoxyglucose (FDG-PET) for the detection of malignant bone metastases, and to compare FDG-PET results with conventional technetium-99m methylene diophosphate (Tc-99m MDP) bone scan findings. Twenty-four patients (10 females, 14 males, ages: 39-71 years) with biopsy-proven malignancy and suspected bone metastases, underwent whole body FDG-PET and bone scan to detect bone metastases. Bone metastases were established in 39 discordant bone lesions by histopathological examination of biopsy samples, MRI/CT, and follow-up bone scan/FDG-PET findings showing progressively and extensively widespread bone lesions. A total of 98 bone lesions found on either FDG-PET or bone scan were evaluated For 39 bone lesions with discordant findings between FDG-PET and bone scan, histopathological examination, MRI/CT and follow-up bone scan/FDG-PET findings revealed 8 metastatic and 0 benign bone lesions with positive FDG-PET findings, not detected on bone scan. Eleven metastatic and 20 benign bone lesions with positive bone scan findings were not detected on FDG-PET. FDG-PET has a better specificity, but a lower sensitivity for detecting malignant bone metastases when compared with bone scan.
Department of Nuclear Medicine, Taichung Veterans General Hospital, Taiwan. kao@vghtc.vghtc.gov.tw
C H
CH
Kao
J F
JF
Hsieh
S C
SC
Tsai
Y J
YJ
Ho
R F
RF
Yen
D000328:Adult; D000368:Aged; D001847:Bone Diseases / Q000000981:diagnostic imaging; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D001842:Bone and Bones / Q000000981:diagnostic imaging; D001943:Breast Neoplasms / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011471:Prostatic Neoplasms / Q000473:pathology; D019275:Radiopharmaceuticals; D012680:Sensitivity and Specificity; D013669:Technetium Tc 99m Medronate; D014055:Tomography, Emission-Computed
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18; D013669:Technetium Tc 99m Medronate