产前诊断又称宫内诊断或出生前诊断,是指通过现代细胞遗传学、分子生物学、生化免疫以及医学影像学与临床医学相结合,在产前对所有可能的出生缺陷进行筛查和诊断。其主要目的是早期发现遗传缺陷儿及各种先天性畸形,对有条件且可能矫治者,适时进行胎儿宫内治疗,对无法矫治者及时 Prenatal diagnosis, also known as intrauterine diagnosis or prenatal diagnosis, refers to the screening of all possible birth defects in the prenatal period through the combination of modern cytogenetics, molecular biology, biochemical immunity and medical imaging with clinical medicine and diagnosis. Its main purpose is early detection of genetic defects in children and a variety of congenital malformations, conditional and possible correction, timely intrauterine treatment, who can not be timely correction