<prompt> Which of the following is a cause of unilateral hyperluscent lung on chest radiography?Poland SyndromeAsthmaAcute BronchiolitisPleural effusion  <response>: Hyperluscent Lung Unilateral Bilateral Chest Wall defects Mastectomy Poland syndromeabsent pectoralis muscle Endobronchial obstruction Pulmonary Vascular causes: Pulmonary aerial hyperplasia Pulmonary embolism Congenital lobar emphysema Decreased soft Tissue Thin body habitus Bilateral mastectomy Cardiac causes of decreased pulmonary blood flow: Right to left shunt Eisenmenger;s syndrome Pulmonary causes of decreased pulmonary blood flow: Pulmonary embolism Emphysema Bulla or bleb Interstitial emphysema Ref: Wolfgang Radiology Pgno: 271 