dentate line


Also found in: Wikipedia.

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 ?
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).
The more extensive the surgery, particularly below the dentate line, the greater the likelihood of pain; the more anxious patient will present a greater challenge with regard to the minimisation of postoperative discomfort.
AIN occurs most frequently at the anal squamocolumnar junction, although it can occur in the anal canal below the dentate line.
In addition, a submucosal nodule approximately 5 to 6 mm in size was also seen in the rectum near the dentate line (Fig.
Another perineal option is the Delorme procedure, which involves circumferential incision of the mucosa of the prolapsed rectal wall just above the dentate line, and circumferential dissection in the submucosal layer of the prolapsed bowel as far up as possible.
The PPH procedure results in less pain than traditional procedures because it is performed above the "pain" line, or dentate line, inside the anal canal.
The system is a plastic plunger suction device resembling a syringe, which is applied to each hemorrhoid in turn, one centimeter above the dentate line.
Rubber band ligation above the dentate line usually is very painful and requires anaesthetic block
This approach involves circumferential incision of the mucosa of the prolapsed rectal wall just above the dentate line, and circumferential dissection in the submucosal layer of the prolapsed bowel as far up as possible.
The existence of primary rectal melanomas has been controversial, but possibly has been clarified with the demonstration of normal melanocytes proximal to the dentate line, even in the rectal mucosa.
There was a bulging nodule in the perirectal fat posterior to the rectum at the level of the dentate line.