Lung involvement in lymphoma may be primary or secondary. Primary lung involvement is rare and more usually seen in Non-Hodgkin Lymphoma. The main radiological findings of pulmonary lymphomas include- Pulmonary lesions appearing as a mass or mass like consolidation with or without cavitation or bronchogram, masses of pleural origin- single or multiple nodules of sub-centimetre size, alveolar or interstitial infiltration and peribronchial, perivascular thickening with or without atelectasis. The pulmonary lymphoma can be confused with carcinoma lung, metastases, pneumonia, organising pneumonia, fungal infection and interstitial lung disease. Imaging manifestations of primary and secondary pulmonary lymphomas may be similar. Since the treatment options of these two are different, it is necessary to differentiate primary pulmonary lymphoma (PPL) from the secondary disease (SPL). Certain characteristic features like peripheral mass, cavitation, consolidations are more common in PPL. Mediastinal and hilar-adenopathy, central, peripheral lung lesions, nodules are more observed in SPL.