Pulmonary ossification: a review.

Area of Science:

• Pulmonary Medicine
• Radiology
• Pathology

Background:

• Pulmonary ossification (PO) is a rare condition characterized by ectopic bone formation in the lungs.
• It often presents insidiously, potentially leading to progressive lung function impairment, even in individuals without prior lung disease.
• While frequently idiopathic, PO can be associated with other conditions, including interstitial lung diseases.

Purpose of the Study:

• To provide an updated overview of pulmonary ossification.
• To discuss pathogenesis, diagnostic criteria, histopathological findings, and prognostic factors.
• To emphasize the importance of managing comorbidities and monitoring for disease progression.

Main Methods:

• Review of existing literature on pulmonary ossification.
• Emphasis on high-resolution computed tomography (HRCT) for diagnosis and differential diagnosis.
• Description of distinct radiological patterns (dendriform and nodular) and their histopathological correlations.

Main Results:

• Pulmonary ossification is characterized by metaplastic bone in the lungs, with dendriform and nodular patterns identified on HRCT.
• Each pattern correlates with specific histological findings and can represent idiopathic or secondary forms of the disease.
• Current management focuses on preventing fibrotic interstitial progression, as specific treatments are unavailable.

Conclusions:

• Accurate diagnosis of pulmonary ossification relies on HRCT, distinguishing it from other lung pathologies.
• Management requires a comprehensive approach, considering comorbidities and close patient monitoring to prevent progression, especially when associated with diffuse interstitial lung disease.
• Further research and long-term follow-up are essential for a deeper understanding of PO's pathogenesis and prognosis.