Overview
Diffuse pulmonary ossification (DPO) is a rare condition characterized by the abnormal formation of bone tissue within the lung parenchyma, often detected postmortem but increasingly identified antemortem through advanced imaging techniques 1.Diagnosis
Imaging: High-resolution computed tomography (HRCT) and video-assisted thoracic surgery (VATS) are crucial for premortem diagnosis 1.
Histological Features: Metaplastic bone formation, including nodular and dendriform patterns, is characteristic 1.
Metal Deposition: Histochemical investigations may reveal aluminum and iron deposition along calcifying fronts, potentially aiding in diagnosis 1.Management
Supportive Care: Focus on managing underlying conditions such as post-myocardial infarction or malignancies 1.
Further Imaging: SPECT imaging can provide additional insights into the extent and location of ossification, particularly in subcutaneous manifestations 2.Special Populations
Comorbidities: DPO has been associated with conditions like post-myocardial infarction and malignancies, suggesting management should address these underlying issues 1.Key Recommendations
Utilize HRCT and VATS for definitive premortem diagnosis of diffuse pulmonary ossification (Evidence: Moderate 1).
Consider histochemical analysis for metal deposition patterns to aid in diagnosis and understanding disease mechanisms (Evidence: Weak 1).
Manage underlying conditions contributing to DPO, such as post-myocardial infarction or malignancies, as primary treatment strategies (Evidence: Expert opinion 1).References
1 Ohtsuki Y, Mori K, Ohnishi H, Enzan H, Iguchi M, Lee GH et al.. Investigation of aluminum and iron deposition on metaplastic bones in three patients with diffuse pulmonary ossification. Medical molecular morphology 2015. link
2 Truwit CL, Hartshorne MF, Peters VJ. Subcutaneous ossification of the legs examined by SPECT. Clinical nuclear medicine 1988. link