Parosteal bone lesions

Non-tumor

  • Stress fracture
  • Fracture callus
  • Myositis ossificans

Benign

  • Osteochondroma
  • Periosteal chondroma

Malignant

  • Parosteal osteosarcoma
  • Periosteal osteosarcoma
  • Parosteal chondrosarcoma

Notes

  • Myositis ossificans is generally distinct from the cortex of the underlying bone. This may be best appreciated with cross-sectional imaging, such as CT.
  • In osteochondromas, the cortex of the exostosis blends with the cortex of the underlying bone; the marrow cavity of the lesion is continuous with the underlying bone marrow.
  • Parosteal osteosarcoma arises on the surface of the bone like a lump of plastacene.
  • Periosteal chondroma seems to arise within the cortex, erodes into the cortex, and expands outward into the soft tissues.
  • Periosteal osteosarcoma and chondrosarcoma generally have a soft tissue mass with matrix formation.

Other Differential Diagnoses by Anatomic Location

Last Updated on June 27, 2024

🔗 Knowledge Graph & Clinical Correlates

OrthopaedicsOne Living Semantic Network

🩺 Clinical Conditions & Indications

  • Wigns There are three categories of diagnostic data collected during the physical examination (sign, symptom, and that in between)...
  • Why have a privacy policy for my office Original Clinical Contribution: Authored for the OrthopaedicsOne General Orthopaedics Specialty Section. Preserved, digitized, and updated to modern evidence-based...
  • Why have a practice website Original Clinical Contribution: Authored for the OrthopaedicsOne General Orthopaedics Specialty Section. Preserved, digitized, and updated to modern evidence-based...
  • Who should undergo biopsy of a bone lesion Patient selection for a biopsy is important: It is intended to confirm the radiologic diagnosis in patients with...

💼 Practice Management & Professional Operations

🕸️ Semantic Relations (RDF)