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[Negative bone scintigraphy in osteomyelitis in children. Difficulties in interpretation]
Summary
Hematogenous osteomyelitis in children can present with normal bone scans. Skeletal scintigraphy using TC 99m diphosphonate may show false negatives, necessitating further investigation with Gallium imaging in suspected cases.
Area of Science:
- Pediatric Radiology
- Nuclear Medicine
- Skeletal Imaging
Background:
- Hematogenous osteomyelitis is a serious bone infection in children.
- Accurate diagnosis is crucial for timely treatment and preventing complications.
- Skeletal scintigraphy is a common imaging modality for diagnosing osteomyelitis.
Observation:
- This study reviewed 7 pediatric cases of hematogenous osteomyelitis with initially normal skeletal scintigraphy.
- Analysis focused on reasons for non-diagnostic radionuclide findings.
- Potential causes included misinterpretation, hyperemia-related tracer uptake, and transient decreased uptake.
Findings:
- False-negative bone scans in pediatric osteomyelitis are rare but can occur.
- Normal findings on TC 99m diphosphonate scintigraphy do not always exclude osteomyelitis.
- Specific patterns like regional hyperemia or transient decreased uptake can complicate interpretation.
Implications:
- High clinical suspicion for osteomyelitis warrants careful consideration even with a normal bone scan.
- Gallium imaging can be a valuable adjunct when bone scintigraphy is inconclusive.
- Further diagnostic workup may be required to confirm osteomyelitis in challenging pediatric cases.