Which of the following is a cause of unilateral hyperlucent lung on chest radiography?: (A) Poland syndrome, (B) Asthma, (C) Acute bronchiolitis, (D) Pleural effusion
Answer is A. Poland's syndrome (unilateral congenital absence of pectoral muscles) causes unilateral hypertranslucency.
Asthma & acute bronchiolitis cause bilateral hypertranslucency.