dentate line

pec·ti·nate line

[TA]
the line between the simple columnar epithelium of the rectum and the stratified epithelium of the anal canal, usually defined as being at the level of the anal valves at the bases of the anal columns.

dentate line

(1) Linea anorectalis [NA6], [NH3]—an anatomic landmark that divides the upper two-thirds from the lower third of the anal canal, and embryologically corresponds to the junction between the hindgut and proctodeum.
(2) Anocutaneous line; linea anocutanea [NH3].

pec·ti·nate line

(pek'ti-nāt līn) [TA]
The line between the simple columnar epithelium of the rectum and the stratified epithelium of the anal canal, usually defined as being at the level of the anal valves at the bases of the anal columns.
Synonym(s): dentate line.
References in periodicals archive ?
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.
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.
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).