Infantile anal atresia?

summary

Anal atresia is also known as low anorectal atresia. Due to the abnormal development of the primitive anus, no anal canal has been formed, resulting in the obstruction of the rectum and the outside world. It is called "anal closure" in traditional Chinese medicine. There is no meconium excretion after birth. The anal area is covered by skin, and there is a sense of impact in the anal area when crying. Infantile anal atresia? Now let me tell you something.

Infantile anal atresia?

After displaying bilateral femurs, the target ring like structure can be displayed by moving upward to the caudal side. The central circular hyperechoic layer is the anal mucosa, the surrounding hypoechoic band is the internal and external sphincter, and the outermost circular hyperechoic layer is the skin

Rotate 90 degrees on the basis of the above cross section °， Or on the coronal section of perineum, the bilateral ischium was shown. The round tubular structure between the two ischium was anal echo, the surrounding was hypoechoic tubular structure, the central was linear hyperechoic, and the outer mouth was a small V-shaped depression, connected with the rectum.

On the basis of sagittal section of the spine, sacrococcygeal part of the spine is displayed, and then scanning to the ventral side of the fetus, the tubular echo of the anal canal of the fetus can be displayed, with hypoechoic tubular structure around and linear hyperechoic structure in the center

matters needing attention

Prenatal ultrasound diagnosis of anal atresia is lack of specificity, intestinal dilatation can not be detected, and the possibility of fetal anal atresia can not be ruled out. Anal atresia should be distinguished from ovarian cyst, polycystic renal dysplasia and filled bladder. The filled bladder can be observed dynamically.