Abstract
The utility and limitations of 67Ga scintigraphy in children with solid tumors were evaluated. Thirty-five patients with malignancies (13 lymphoreticular neoplasms, 11 soft-tissue sarcomas, 8 neuroblastomas, and 3 primary bone tumors) had a 67Ga-citrate scan as part of their clinical evaluation. The sensitivity and specificity of the test were analyzed for the different tumor types. The overall sensitivity of the 67Ga-citrate scan for the lymphoma group was 87%. Higher values were obtained for the mediastinal and abdominal regions. Ninety-three per cent of the involved sites were correctly identified by 67Ga scintigraphy in the soft-tissue sarcoma group. Small lung metastases, however, were missed on scan. Thus, 67Ga scans should be complemented with chest radiographs and whole chest tomograms for both initial evaluation and follow-up in those patients. 67Ga had low sensitivity for neuroblastoma.
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