Fig. 3From: Treatment-naïve idiopathic inflammatory myopathy: disease evaluation by fluorodeoxyglucose versus pyrophosphateCorresponding trans-axial, coronal, and sagittal slices from PYP (upper row) and FDG (lower row) scans in one of the patients. With FDG, focally increased tracer uptake is seen in the caudal part of the esophagus (red arrow). A similar focus was not identified by PYP scintigraphyBack to article page