Hence, various scoring systems, which can evaluate the morphologi

Hence, various scoring systems, which can evaluate the morphologic abnormalities found in HRCT, have been recommended.14,22-24 Although different studies have been performed to determine the importance of using CT scoring system to assess the progression of the disease,16-19 there are still some limitations such as the lack of a study evaluating the correlation of patients’ clinical status with CT scoring system results. Twenty

three children with CF were included in the present study. Inhibitors,research,lifescience,medical The mean age was 13.4 years indicating the age range of the participants was higher than those of similar studies.14 This might be due to delayed diagnosis. The lack of neonatal screening and high cost of evaluation for genetic mutation in Iran have led to the diagnosis of the disease on the basis of clinical manifestations and sweat test results in a higher range of age. The evaluation of HRCT findings showed the following defects Inhibitors,research,lifescience,medical in decreasing order of frequency: bronchiectasis (100%), peribronchial wall thickening (100%), mucus plugging (95.7%), air trapping (91.3%) and parenchymal Inhibitors,research,lifescience,medical involvement (47.8%). A similar study conducted by Helbich et al.14 showed that bronchiectasis and peribronchial wall thickening were the most common findings on HRCT (80.3% and 76.1%, respectively). The other common findings

were mucus plugging (63.9%) and mosaic perfusion (51.3%). Inhibitors,research,lifescience,medical The presence of all abnormalities in the majority of patients in the present study can be related to their high range of age. In other words, the higher the age of the

patients, the higher the rate of lung involvements found on HRCT. In this study, there was a significant (P=0.037) correlation between total CT scores and the patients’ age. This indicates that CT scoring seem to be sensitive in the assessment of the disease progression. Moreover, there was a significant relationship between the most common abnormalities found on CT and the aggravation of the clinical manifestations of patients in this study. The progression of Inhibitors,research,lifescience,medical these abnormalities during the disease course could be explained by recurrent pulmonary infections and chronic inflammation.9,22,23 Endonuclease Long-term mucus plugging is accompanied by BGB324 datasheet progressive bronchial destruction ending in bronchiectasis and bronchial wall thickening.9,22,23 In our study, a significant correlation was found between the advancement of age and the decrease of FEV1.This contradicts the results obtained from previous studies, which showed an increase in CT score in contrast to no change or improvement of respiratory test during the course of the disease.25,26 In this study there was no relationship between clinical score and the patients’ age, which can be due to imprecise reflection of lung status by Schwachman-Kulczycki score,24 and also the few number of patients recruited in this study.

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