DEMOGRAPHIC CHARACTERISTICS
Prevalence of NCP is unknown. NCP may be higher in female. Affected persons are ranging from children and adolescents to middle-aged and older people with seventh decade of life[7]. Most symptomatic patients are in their second and third decade of life and a second peak of NCS occurs in middle-aged women[8]. Coincidental cases in siblings have been reported, although NCP is not a hereditary phenomenon[9]. The rapid increase in body height and the maturation of the vertebral bodies during puberty is resulting with decrease in the angle between the superior mesenteric artery and aorta. A low body mass index has been shown to correlate positively with NCS[10].
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