الفهرس 
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Abstract
Bronchiectasis is a permanent dilation of the proximal and medium- sized bronchi more than 2 mm in diameter caused by weakness or fibrosis of the muscular and elastic components of the bronchial walls , It is a suppurative lung disease with heterogeneous phenotypic features and diagnosed with high resolution chest computed tomography (HRCT) scans.
It may be congenital or acquired. The symptoms of bronchiectasis are distressing to the patients, as it will cause recurrent infection, hemoptysis, pneumonia or pleurisy. It may affect one or more than one lobe. It may be unilateral or bilateral. The treatment is postural drainage in addition to antibiotics when needed
Through the efforts of an international collaboration, introduced the bronchiectasis severity index (BSI), which consisted of HRCT score, FEV1, Medical Research Council dyspnea score, bacterial colonization (Pseudomonas aeruginosa or other pathogenic bacteria), Another independent research group simultaneously established the FACED score, which comprises FEV1, age, P. aeruginosa colonization, radiological extension and dyspnea. Similarly, the FACED score effectively predicted mortality. Both scoring systems include FEV1, P. aeruginosa colonization, HRCT score and dyspnea.
The Bhalla score is based on the CT analysis of bronchiectasis associated with cystic fibrosis in a relatively little population of children with cystic fibrosis.
The Bhalla score is used for description of bronchiectasis from any etiology. we use transthoracic lung sonography for assessment of the presence of B-lines, and the distance between them. In each single positive zone, the number of B-lines were counted (<5 lines , 5-15 line,15-30line,>30 line)).