Generally speaking, intestinal dilatation not exceeding 25mm can be observed first, so 19mm intestinal dilatation, if it is not accompanied by symptoms, may not be regarded as serious, and the specific situation varies from person to person. Intestinal dilatation may be transient, such as meconium blockage, or pathologic, such as intestinal malformation, chromosomal abnormality, etc. It is recommended to wait for 1 week before going to the hospital for examination. It is recommended to wait for 1 week and then go to the hospital for examination. If there is shrinkage, then it is considered that it may be transient and can be rechecked again. If there is further enlargement or other abnormalities, then chromosomal examination is needed to rule out whether there is a genetic cause, and if none of them, we need to wait for the fetus to be born to determine whether there is congenital anal atresia and other causes. During pregnancy, you need to complete a detailed examination, and if there are obvious abnormalities, we recommend that you consult a doctor in a timely manner.