DISCUSSION: Primary pulmonary lymphoma (PPL) is a rare clonal lymphoid proliferation affecting the lungs with no detectable extrapulmonary disease within 3 months of the time of diagnosis [1,2,3]. In this case the patient had disease only present in the lung. In half of the cases of PPL, patients are asymptomatic with abnormal imaging prompting further evaluation . Our patient presented with dry non-productive cough which is the most common presenting symptom occurring in up to 41% of cases . PPL predominantly occurs in patients over 60 years of age with a history of chronic antigenic stimuli and resulting inflammation [2,3]. In a retrospective analysis of 223 patients with extranodal marginal zone pulmonary lymphoma 50% were noted to have a smoking history . The optimal chemotherapeutic regiment has been not well defined at this time. Patients can undergo surgery, chemotherapy or radiation as part of their treatment regime.