At the sites where were one cm above the dentate line
of rectal posterior wall and 2~3 cm above the dentate line
of anterior rectal wall respectively, rectum mucosa and musculi sphincter ani internus were cut apart obliquely.
RBL is a procedure in which haemorrhoidal tissue 1-2cm above dentate line
is grasped, pulled into the barrel of an elastic band applicator and a small elastic band is slipped over it.
One should always include rectal mucosa down to dentate line
The perforation site on the lateral rectal wall was identified 10 cm above the dentate line
Anal fissure is a painful linear wound in the squamous epithelium of the anal canal distal to the dentate line
Tumor-related variables include tumor stage and tumor height from the dentate line
With the anoscope inserted, using the technique described above, multiple running sutures were placed above the dentate line
, in order to avoid the anoderm and tied at the proximal end of the hemorrhoid (Figure 4).
They are located in the upper anal canal, from the dentate line
to the anorectal ring.
Three months after the completion of the treatment, a reevaluation of the disease with endoscopic ultrasound showed an ulcer within the anal canal extending 1 cm above the dentate line
Examination under general anaesthesia revealed a hard and fixed mass at the level of dentate line
protruding down into anal canal and two peri-anal abscesses along with bilateral palpable inguinal lymphadenopathy.
The dentate line
is easily identified and 4 cm proximally to it.
Most pathologists therefore tend to ignore the colorectal zone and rely only on the grossly visible dentate line
as the superior border of the anal canal (which indeed is the definition of the "anatomic anal canal" 2).