<prompt> Which of the following is not a feature of congenital lobar emphysema is:Left upper lobe involvement is most commonly involvedSevere respiratory distress in childhood itselfChildhood shiftMacleods syndrome is synonymous with it  <response>: Ans. D. Macleods syndrome is synonymous with itCongenital lobar emphysemaa. Progressive over inflation of one or multiple lobes, usually of the upper lobes or right middle lobe.b. Left upper lobe is most commonly affected 43.c. The word emphysema is misnomer as me-e is no alveolar wall destructiond. The etiology is unknown in many cases but is related to obstruction of the bronchus by a ball valve mechanisme. Present with respiratory distress 90 with progressive cyanosis within 6 months of life.f. Associated congenital anomalies cardiovascular are seen in 50 casesg. Treatment is by lung resection 