Rib osteochondroma presenting as acute paraparesis

Area of Science:

• Orthopedic Surgery
• Skeletal Radiology
• Oncology

Background:

• Osteochondromas typically develop from the metaphyseal region of long bones.
• While osteochondromas can arise from flat bones and the spine, rib involvement is exceptionally uncommon.
• These benign bone tumors originate from cartilage and can cause symptoms due to mass effect or impingement.

Observation:

• A 26-year-old male presented with a two-week history of ambulatory dysfunction.
• Diagnostic imaging revealed an osteochondroma originating near the costochondral junction of a rib.
• Magnetic resonance imaging (MRI) confirmed the presence of a characteristic cartilage cap, indicative of osteochondroma.

Findings:

• The case confirms the rare occurrence of osteochondromas in the ribs.
• The radiological findings, particularly the cartilage cap on MRI, were crucial for diagnosis.
• The location near the costochondral junction is consistent with known rare presentations of osteochondromas in flat bones.

Implications:

• This case expands the understanding of osteochondroma's anatomical distribution.
• It underscores the importance of considering rare diagnoses in cases of unexplained bone lesions.
• Accurate radiological assessment is vital for diagnosing unusual osteochondroma presentations and guiding patient management.