Fetuses with this malformation are at risk of significant perinatal morbidity and mortality.Malignant components, coexisting with life-threatening anomalies, and chromosomal abnormalities are rare.

• 一般当胎儿患此疾病时会提高胎儿的死亡率及并发症，其中胎儿骨氐尾骨畸胎瘤极少合并染色体异常、严重畸形或恶性转变；