This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Medicine
Which of these is not a feature of Bronchiectasis? 
Select and explain. 
A. Tree in bud appearance, B. Upper lung fields are commonly involved in cystic fibrosis, C. Oral glucocoicoids are given for central bronchiectasis of ABPA, D. Non-tuberculous mycobacteria involve the lower lobes
D: Non-tuberculous mycobacteria involve the lower lobes
Answer: D: Non-tuberculous mycobacteria involve the lower lobes 
Explanation: Bronchiectasis Upper lung fields are commonly involved in cystic fibrosis- commonly involved in infections Oral Glucocoicoids are given for central bronchiectasis of ABPA NTM involve mid zone. HRCT Tram track appearance Signet ring appearance Tree in bud appearance Rx Antibiotic for 10-14 days. NTM infection:Macrolide withrifampin and ethambutol Hydration Mucolytic : Dornase (DNase)-Only for CF-related bronchiectasis Bronchodilator Hypeonic saline Chest physiotherapy Pulmonary rehabilitation Refractory cases: Resection of a focal area Lung transplantation.