Pediatrics Disorders of the Respiratory Tract b3a26a4b Alpha-1- antitrypsin deficiency presents as? A Emphysema B Bronchitectasis C Empyema D Bronchogenic carcinoma High-Yield Explanation Ans. (a) EmphysemaRef: Robbins 8thEdn /684y 685, Harrison 18,hed chapter 309, Nelson Textbook of Pediatrics, 18th ed chapter 390