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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 873
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    • شماره تماس دبیرخانه رویداد: -
     lower gastrointestinal bleeding (lgib) in children has many different etiologies and is a serious problem that warrants careful diagnostic work-up.164 colonoscopies were done during one year for determining the etiologies of lgib in children who was referred to children's medical center hospital. analyses of results were based on age, sex, etiology and clinical presentations. of 164 colonoscopies, 34.7% of lgbi were due to polyps which was the most common etiology. lymphoid nodular hyperplasia (lnh) had a prevalence of 22.5%; in 15.8% of patients, colonoscopic findingswere normal. the peak age group of polypswas 4–6 yr; for lnh, itwas 1 yr. lnh is more common than polyps in patients presenting with lgib younger than 3 yrs. in older children, however, polyps are the major cause. therefore, the diagnostic approach and the need for colonoscopy are different in these two age groups.

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