马凡氏综合征是一种先天遗传性疾病,由先天性中胚层营养不良影响脑垂体功能而导致的发育异常。主要为不规则的常染色体显性遗传,表现为全身中胚叶组织广泛紊乱,以眼部疾患、心血管和骨骼系统发育异常为特征。其骨骼异常表现为身材瘦长,长头和长瘦脸,手足四肢骨骼细长,手足指趾间蹼,脊柱弯曲,鸡胸,关节韧带松弛,肌肉发育不良。心血管 Marfan syndrome is a congenital genetic disease, dysplasia caused by congenital mesoderm pituitary dysfunction caused by dysplasia. Mainly irregular an autosomal dominant inheritance, manifested as a wide range of disorders of the systemic mesodermal tissue, characterized by ocular disorders, cardiovascular and skeletal system abnormalities. The skeletal abnormalities showed an elongated body with long and thin face. Skeletal slender limbs of hands and feet, webbed fingers and toes, spine flexion, chicken breast, ligament laxity and muscular dysplasia. Cardiovascular