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The Thoracic Cage: Ribs01:20

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Benign Hyperostosis of the Rib.

Michiel Van Elsen1, Filip M Vanhoenacker2, Annemiek Snoeckx1

  • 1Department of Radiology, University Hospital of Antwerp, Antwerp, Belgium.

Journal of the Belgian Society of Radiology
|March 25, 2024
PubMed
Summary

Benign hyperostosis of the rib is a common, benign bone condition. It results from stress and is distinct from serious conditions like Paget disease or bone cancer.

Keywords:
Hyperostosisbenigndiffuse idiopathic skeletal hyperostosisribs

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Area of Science:

  • Radiology
  • Orthopedic Surgery
  • Pathology

Background:

  • Benign hyperostosis of the rib is a frequently encountered osseous finding.
  • Accurate differentiation from malignant or other bone pathologies is crucial for patient management.

Purpose of the Study:

  • To highlight the key imaging and pathological features of benign rib hyperostosis.
  • To emphasize its distinction from other rib lesions such as Paget disease, fibrous dysplasia, and osteoblastic metastases.

Main Methods:

  • Review of imaging findings (radiography, CT, MRI) of pathologically confirmed cases.
  • Histopathological correlation of imaging features.

Main Results:

  • Benign rib hyperostosis presents as a focal, endosteal, or periosteal thickening.
  • Characteristic imaging findings include smooth, well-defined margins and lack of aggressive features.
  • Histology reveals woven bone and increased osteoid consistent with a stress response.

Conclusions:

  • Benign hyperostosis of the rib is a benign stress-induced phenomenon.
  • Radiological and pathological features reliably differentiate it from Paget disease, fibrous dysplasia, and osteoblastic metastasis, preventing misdiagnosis and unnecessary interventions.