your limit has been reached. plz Donate us to allow your ip full access, Email: sshnevis@outlook.com
Uptodate Reference Title
Normal anal ultrasound
Normal anal ultrasound
Anal ultrasound showing the anal sphincter muscles in cross section through the mid anal canal. The darker homogenous ring is the internal anal sphincter smooth muscle (i). The white heterogeneous ring surrounding this is the external anal sphincter (arrows; E). The top of the figure is anterior.