1病例病例1:女,28岁,结婚3年未孕。外周血染色体核型:46,XX,t(2;20)(q23;q13.3)。2014年12月18日被收录入《中国人类染色体异常核型数据库》,编码:3950病例2:女,26岁,孕2产1,第一胎孕2个月自然流产,第二胎孕39周剖宫分娩一多发畸形儿:房、室缺,动脉导管未闭,双手畸形。外周血染色体核型:46,XX,t(4;7)(q33; Case 1 Case 1: Female, 28 years old, 3 years pregnant without pregnancy. Chromosome karyotype in peripheral blood: 46, XX, t (2; 20) (q23; q13.3). December 18, 2014 was included in the “Chinese human chromosomal aberration karyotype database”, Code: 3950 Case 2: Female, 26 years old, pregnant 2 1, the first pregnancy 2 months spontaneous abortion, the second pregnancy 39 Zhou cesarean section delivery multiple malformations children: room, atrial septal defect, patent ductus arteriosus, hands deformity. Karyotype of peripheral blood: 46, XX, t (4; 7) (q33;