What pathologies can a whole-body bone scan reveal?

What pathologies can a whole-body bone scan reveal?

• A. Metastases
• B. Occult fractures
• C. Osteomyelitis
• D. All of the above

Answer: (D)

A whole-body bone scan detects areas of increased bone turnover across the skeleton, making it highly sensitive to anything that stimulates osteoblastic activity. Metastatic cancer often causes multiple hotspots because tumor growth prompts bone remodeling. Occult fractures, including stress fractures, may not be visible on X‑rays yet but show uptake as healing bone forms new tissue. Osteomyelitis, an infection of bone, also elevates turnover and appears as focal uptake where the infection is active. Because this test is very sensitive but not perfectly specific, the uptake pattern must be interpreted alongside clinical history and other imaging to distinguish among metastases, occult fractures, and osteomyelitis. So a whole-body bone scan can reveal all of these pathologies.

A whole-body bone scan detects areas of increased bone turnover across the skeleton, making it highly sensitive to anything that stimulates osteoblastic activity. Metastatic cancer often causes multiple hotspots because tumor growth prompts bone remodeling. Occult fractures, including stress fractures, may not be visible on X‑rays yet but show uptake as healing bone forms new tissue. Osteomyelitis, an infection of bone, also elevates turnover and appears as focal uptake where the infection is active. Because this test is very sensitive but not perfectly specific, the uptake pattern must be interpreted alongside clinical history and other imaging to distinguish among metastases, occult fractures, and osteomyelitis. So a whole-body bone scan can reveal all of these pathologies.