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Positive (^99mTc) Diphosphonate and ⁶⁷Ga-Citrate Scans in Ameloblastoma: Case Report

Long Beach Community Hospital, Long Beach, California

Correspondence: For reprints contact: William H. Olson, M.D., Long Beach Community Hospital, 1720 Termino Avenue, P.O. Box 2587, Long Beach, CA 90801.

ABSTRACT

Technetium-99m-diphosphonate scintigrams and ⁶⁷Ga citrate bone scans were performed in a patient with known ameloblastoma of the right mandible. The tumor concentrated both radionuclides avidly. The lesion was larger on the gallium scans, presumably due to inflammation of adjacent soft tissue and to poorer instrument resolution for ⁶⁷Ga than for technetium. If a single radionuclide is to be selected for evaluating the extent of tumor in ameloblastoma, the bone-imaging agent is preferable.