A Case of Multiple Lung Metastasis of Peritoneal Mesothelioma Presenting with Radiographic Findings Resembling Diffuse Lung Disease

Key Points

• To present a unique case of lung metastasis from peritoneal mesothelioma that exhibits radiographic features resembling diffuse lung disease.
• Case report of a 72-year-old male presenting with dry cough and dyspnea.
• Chest CT scans indicated interlobular septal thickening and fine reticular opacities.
• Bronchial lung biopsy was performed to investigate potential lung metastasis.
• Confirmatory tests involved abdominal imaging for soft tissue masses and ascites.
• Initial diagnosis suggested possible hypersensitivity pneumonitis with no observed improvement.
• Lung mass confirmed as metastatic carcinoma following biopsy and immunohistochemical analysis.
• Diagnosis of peritoneal mesothelioma was established based on ascitic cell block examination.