Fig. 4

a Bone Scan prior to parathyroidectomy (10/11/2009): generalized increased tracer uptake over the skull, both axial and appendicular skeleton: findings in favour of metabolic bone disease. b Bone Scan 3 months after parathyroidectomy (18/02/2010): diffusely increased tracer uptake in axial and appendicular skeleton with increased bone to soft tissue tracer uptake ratio-findings consistent with metabolic bone disease. No appreciable change in scan pattern seen (from previous scan of 10/11/2009)