A 72-year-old woman presents with bone pain and tenderness in her lower extremities and left clavicle. Laboratory studies reveal elevated serum alkaline phosphatase. X-ray spine shows
High-Yield Explanation
Ans. D. Osteitis fibrosa cystica* The patient in this question has hyperparathyroidism from lab derangements.* The Image shows osteosclerosis with greater density at the endplates leading to multiple contiguous levels to produce an alternating sclerotic- lucent-sclerotic appearance.* This simulates the transverse bands of a rugby jersey.* These findings are seen in hyperparathyroidism and the bone changes are called osteitis cystica fibrosa.