<prompt> Which of the following morphological changes in the lungs would be found in this patient of asthmaDestruction and dilation of the bronchi and bronchiolesFree air in the interstitiumViscid mucus plugs in the small airwaysPeribronchiolar fibrosis  <response>: In the given case of atopic asthma,airway wall may be thickened and edematous.Another common finding is occlusion of the airway lumen by a mucous plug.,which is comprised of mucous glycoproteins secreted from goblet cells and plasma proteins from leaky bronchial walls.There is also vasodilation and increased numbers of blood vessels angiogenesis. Ref:Harrisons medicine-18th edition,page no:2104. 