Pulmonary Nodules

  
This image shows a pulmonary nodule in the right upper lung. Differential diagnosis of pulmonary nodules includes:
1. Malignancy (primary or metastatic)
2. Benign neoplasm: hamartoma, bronchial adenoma
3. Granuloma
4. Simulated: nipple, bone lesion, skin lesion, foreign body, artefact

Less common causes include:
1. Abscess
2. Infarct
3. Loculated pleural effusion
4. Organized pneumonia
5. Sarcoidosis
6. Cystis disease
7. Vascular lesions