Role of repeated F-18 fluorodeoxyglucose imaging in management of patients with bone and soft tissue sarcoma.
OBJECTIVE
To assess the impact of repeated F-18 FDG studies on the management of patients with bone and soft tissue (B&S) sarcomas.


METHODS
Twenty patients with B&S tissue tumors (11 M and 9 F age 17-72 years) had 52 F-18 FDG Dual Head Coincidence Imaging (DHCI) studies. 7 patients were followed for 6 months to 2 years clinically after removal of the primary tumor. Thirteen patients were evaluated for suspected recurrences. Patient's preparation, F-18 FDG injection and imaging procedure were done according to department protocol. Attenuation corrected images were interpreted visually by 3 trained physicians. Tumor to background ratios were calculated for all lesions.


RESULTS
In 13 patients having both studies, baseline FDG and CT/MRI were concordant in 8 patients, FDG detected more lesions in 3 patients but it did not detect 4 metastatic pulmonary nodules in 2 patients. Follow up studies showed stable disease in 10 patients while 6 patients who showed worsening disease needed to change their chemotherapy. Surgery was avoided in 2 patients and 2 patients showed improved response.


CONCLUSIONS
Repeated F-18 FDG DHCI examinations proved to have an impact on the clinical management of patients with malignant bone and soft tissue sarcoma. It helps to differentiate postoperative changes from local recurrence.
el-Zeftawy
H
H
Saint Vincent's Catholic Medical Centers of New York, Section of Nuclear Medicine, Department of Radiology, New York Medical College, Valhalla, NY, USA.
Heiba
S I
SI
Jana
S
S
Rosen
G
G
Salem
S
S
Santiago
J F
JF
Abdel-Dayem
H M
HM
D000293:Adolescent; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary; D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000601:surgery; D003131:Combined Modality Therapy; D018450:Disease Progression; D005260:Female; D019788:Fluorodeoxyglucose F18; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000000981:diagnostic imaging*; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D011187:Posture; D019275:Radiopharmaceuticals; D012189:Retrospective Studies; D012509:Sarcoma / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000556:secondary / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000601:surgery; D014055:Tomography, Emission-Computed
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18