Solitary pulmonary mass

A lung nodule or pulmonary nodule is a relatively small focal density in the lung. A solitary pulmonary nodule (SPN) or coin lesion, is a mass in the lung smaller than 3 centimeters in diameter. [Source: Wikipedia ]

May Be Caused by

Common: Bronchiolo-alveolar carcinoma; Bronchogenic carcinoma; Lung abscess; Metastasis; Round pneumonia
Uncommon: Actinomycosis; Adenomatoid malformation; Amyloidosis; Arteriovenous malformation; Asbestosis; Aspergilloma; Benign lung neoplasm; Blastomycosis; Carcinoid; Castleman disease; Coal-worker pneumoconiosis; Coccidioidomycosis; Cryptococcosis; Fluid-filled bronchial cyst; Fluid-filled bronchiectatic cyst; Fluid-filled bulla; Granuloma; Hamartoma; Hematoma of lung; Histoplasmosis; Hydatid cyst; Inflammatory pseudotumor; Intralobar pulmonary sequestration; Leiomyosarcoma; Lipoid pneumonia; Lymphoma; Mycetoma; Nocardiosis; Organized pneumonia; Pneumoconiosis; Pulmonary blastoma; Pulmonary infarction; Pulmonary plasmacytoma; Radiation pneumonitis; Rhabdomyosarcoma; Rounded atelectasis; Silicosis; Spindle cell tumor; Wegener granulomatosis