Diffuse pulmonary parenchymal involvement in multiple myeloma: antemortem diagnosis

Area of Science:

• Pulmonology
• Hematology
• Oncology

Background:

• Antemortem diagnosis of diffuse myelomatous pulmonary infiltrate is uncommon.
• Pulmonary involvement in multiple myeloma can present as diffuse infiltrates.
• Establishing an early diagnosis is crucial for patient management.

Observation:

• A rare case of diffuse myelomatous pulmonary infiltrate diagnosed antemortem is presented.
• Diagnosis was achieved through analysis of bronchoalveolar lavage (BAL) fluid.
• BAL fluid revealed the presence of monoclonal plasma cells.

Findings:

• The diffuse lung involvement by myeloma was confirmed post-mortem.
• Clinical indicators included lack of fever, poor response to antibiotics, and improvement with myeloma treatment.
• Analysis of BAL fluid for plasma cells and cytoplasmic immunoglobulin DNA offers a noninvasive diagnostic method.

Implications:

• Myelomatous pulmonary infiltrates should be considered in the differential diagnosis of pulmonary infiltrates.
• Noninvasive methods like BAL fluid analysis can facilitate early diagnosis.
• Timely diagnosis and treatment of pulmonary involvement in myeloma can improve patient outcomes.