RESUMEN
Primary pulmonary hypoplasia is rare in adulthood. It is characterized by decreased number or size of bronchi, vessels and alveoli. We present a case of unilateral pulmonary hypoplasia in 44-old-year male smoker who presented with right pleural effusion. His chest X-ray revealed an inhomogenous opacity on the left side with bronchiectatic changes and right minimal pleural effusion. Fiberoptic bronchoscopy revealed blind end bronchi in left upper lobe and computed tomography pulmonary angiography revealed hypoplastic lung with cystic bronchiectasis on the left side and hypoplastic left pulmonary artery. It was not associated with any other congenital anomalies. In addition to symptomatic management, he was started on anti-tuberculous treatment for tuberculous pleural effusion and kept under follow-up.