From: Unusual pathological fracture of the clavicle revealing primary hyperparathyroidism: a case report
Skeletal anomalies | Early stage: • Symmetrical abnormal bone activity is present, particularly in the calvarium, mandible, sternum, and epiphyses of long bones with or without accompanying changes in the vertebrae and pelvis [9]. |
Severe cases: appearances are those of a super scan: • Increased tracer uptake in axial skeleton. • Increased tracer uptake in long bones. • Increased tracer uptake in periarticular areas. • Faint or absent kidney images [10]. | |
Extraskeletal anomalies | Extraskeletal metastatic calcification in primary hyperparathyroidism: • Increased visceral uptake of technetium-99m-labeled phosphate throughout the lung, liver, stomach [11]. |
Extraskeletal anomalies secondary to secondary hyperparathyroidism: • Increased diffuse activity in the lungs and the small kidneys. • Increased muscle activity (diffuse and bilaterally in the vast and adductor of both thighs, and in the abdominal muscles) [12]. |