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Melorheostosis With Uniform Rib Thickening
Akane Ariga1, Yuki Funauchi1, Shingo Sato
1From the Department of Orthopaedic Surgery, Graduate School of Medicine and Dental Sciences.
Clinical Nuclear Medicine
|May 17, 2024
Summary
A rare case of melorheostosis in a 16-year-old girl presented with atypical chest pain and calcification. Open biopsy confirmed the diagnosis, highlighting its importance for unusual imaging findings.
Area of Science:
- Medical imaging
- Skeletal radiology
- Orthopedic pathology
Background:
- Melorheostosis is a rare, benign skeletal hyperostosis characterized by irregular ossification.
- Typical radiographic findings include "dripping candle wax" appearance, often affecting long bones.
Observation:
- A 16-year-old female presented with left chest pain and localized calcification in the sixth rib and thoracic vertebra.
- Radiography and CT showed uniformly thickened calcification, deviating from classic melorheostosis imaging.
- Bone scintigraphy revealed abnormal technetium-99m uptake in the affected areas.
Findings:
- Open biopsy of the sixth rib confirmed the diagnosis of melorheostosis.
- The observed calcification pattern was atypical, differing from the characteristic "dripping candle wax" sign.
Implications:
- This case underscores the diagnostic value of open biopsy when imaging features of melorheostosis are atypical.
- It emphasizes the need for histological confirmation in challenging skeletal anomaly diagnoses.
- Highlights the variability in melorheostosis presentation, particularly in unusual locations like the ribs and vertebrae.
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