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Normal Shoulder Variations in the Technetium 99m Polyphosphate Bone Scan

Technetium 99m polyphosphate bone scans were done on 60 patients with known primary carcinoma. Since technetium 99m polyphosphate shortens scanning time, more skeletal areas can be imaged. Many patients had increased activity in one or both shoulders but no other scan or x-ray film abnormalities. The activity in the shoulders, which takes a characteristic doughnut shape, should not be colled abnormal. Increased activity in the shoulders does not necessarily indicate a metastatic lesion when other scans and x-ray films are normal. Wider application of technetium 99m polyphosphate is encouraged.