摘要
目的探讨Loeys-Dietz综合征的临床特点及其相关致病基因。方法回顾分析1例Loeys-Dietz综合征患儿的临床资料,并复习相关文献。结果男性患儿,6月龄,面容特殊,双眼内陷、眼距增宽、双眼外斜视、下颌短小,腭弓高、悬雍垂分裂,全身肌张力低,四肢远端关节松弛,指趾细长;生后2周诊断"先天性马蹄内翻足";心脏彩超示主动脉窦瘤形成;基因检测示TGFBR2基因c.1085A>G(p.His362Arg)杂合变异,确诊Loeys-Dietz综合征。结论主动脉瘤形成、眼距过宽以及悬雍垂裂,并结合致病基因突变可确诊Loeys-Dietz综合征。
Objective To explore the clinical characteristics and related pathogenic genes of Loeys-Dietz syndrome.Method The clinical data of Loeys-Dietz syndrome in a child were retrospectively analyzed and the related literature was reviewed. Results A 6-month-old boy was characterized with special facial features(enophthalmos, hypertelorism, exotropia,short mandible, high palatal arch and bifid uvula) and other features(lower muscular tension, relaxed distal joints and spiderlike fingers/toes). He was diagnosed with talipes equinovarus 2 weeks after birth. Color Doppler echocardiography indicated the formation of aortic sinus aneurysm, and gene detection showed the heterozygous variation of c. 1085 A>G(p.His 362 Arg) in TGFBR2 gene. The diagnosis of Loeys-Dietz syndrome was confirmed. Conclusion Loeys-dietz syndrome can be diagnosed based on the aortic aneurysm formation, hypertelorism and bifid uvula, combined with pathogenic gene mutation.
引文
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