对老年直背综合征X线诊断的商讨

X-ray diagnosis of straight back syndrome in the aged

目的：通过病例分析及结合文献，探讨老年直背综合征的诊断要点。方法：回顾分析５例老年直背综合征的临床表现和Ｘ线征象，并与１００例老年健康者和１２例年轻的直背综合征患者进行比较。结果：①老年直背综合征的临床症状较年轻的直背综合征者轻；②Ｘ线胸片上，正常老年的胸腔前后径与横径之比为０．４８，年轻的直背综合征患者该值为０．３１，而老年直背综合征者为０．３７。结论：老年直背综合征的临床症状可因肺气肿而减轻，在Ｘ线平片上胸腔前后径与胸腔横径的比值小于０．４即有诊断价值。

Objective:To investigate X-ray diagnosis of straight back syndrome in the aged by means of case analysis and literature reviews.Methods:X-ray features and clinical manifestations in 5 aged patients with straight back syndrome were analyzed. The findings were compared with those of the 100 normal elderly and 12 young patients with straight back syndrome.Results:①The clinical manifestations in the aged patients suffering from emphysema with straight back syndrome were less than that of the young.②The ratio between anteroposterior(AP) and transverse diameter on chest radiogram was 0.48 in the normal elderly, 0.31 in the young with straight back syndrome and 0.37 in the aged patient.Conclusion:The clinical manifestations of the aged patients with straight back syndrome can be palliated due to emphysema.We suggest that the revised radiological diagnostic standard of straight back syndrome in the elderly should be feasible if the ratio between AP and transverse diameter is less than 0.4 on chest radiogram.