The Value of67Ga Scintigraphy in Soft-Tissue Sarcoma and Chondrosarcoma

Abstract
Forty-one 67Ga images were obtained for 33 patients with a diagnosis of soft tissue sarcoma or chondrosarcoma. Tumor was detected in 27 cases of soft tissue sarcoma; 25 (93%) of these were found on the Ga scans. The overall accuracy of scanning was 95.1%. All patients with positive scans had tumors present. In soft tissue sarcoma patients the scan detected the tumor in 39 of 45 sites. Ga scintigraphy was useful in the initial evaluation and follow-up of these patients. If the Ga citrate scan is positive at multiple sites, the possibility of a tumor being present is 100%, with a false negative rate of 16%.

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