TY - BOOK AU - Mona Ahmed Mahmoud Zyan AU - Badawy Chafik Khalifa , AU - Mona Mostafa Elfalaki , AU - Noussa Ragab Mohamed , TI - E. N. T. evaluation of patients with cystic fibrosis / PY - 2013/// CY - Cairo : PB - Mona Ahmed Mahmoud Zyan , KW - Cystic fibrosis KW - E. N. T. evaluation KW - N-Acetyl cysteine N1 - Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Pediatrics; Issued also as CD N2 - Cystic fibrosis (CF) is the most common autosomal recessive disease among Caucasians . It is characterized by abnormal transepithelial sodium and chloride transport . Sinusitis is a common complication of CF and although the true incidence is not known , the vast majority of CF patients develop sinus diseases at some time in their life ER -