Radionuclide bone scanning may sometimes demonstrate increased focal lesions with more or less symmetrical patterns. In the femoral neck, ribs, and axillary margins of the scapulae, these lesions may indicate pseudofractures. In the pelvis, irregular activity of the bladder may cause problems in differentiating between bladder diverticula and pelvic lesions. The routine use of imaging tables and traditional gamma camera views may lead to understating certain scintigraphic patterns and/or diagnosing these as metastatic disease. This article emphasizes the importance of certain special views in recognizing these patterns and making the proper diagnosis.
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