Rathke's pouch

(redirected from Rathke's cyst)
Also found in: Encyclopedia.

pouch

 [powch]
a bag or pocket; see also cavity, recess, and sac.
abdominovesical pouch the pouchlike reflection of the peritoneum from the abdominal wall to the anterior surface of the bladder.
craniobuccal pouch (craniopharyngeal pouch) Rathke's pouch.
Douglas' pouch Douglas' cul-de-sac.
Indiana pouch a bladder surgically created using a segment of isolated, detubularized colon that may or may not be patched with small bowel. The ureters are implanted into the pouch in a non-refluxing manner. A continence stoma to the abdomen is created by intussusception of a small segment of bowel.
Kock pouch see kock pouch.
Prussak's pouch a recess in the tympanic membrane between the flaccid part of the membrane and the neck of the malleus.
Rathke's pouch a diverticulum from the embryonic buccal cavity from which the anterior lobe of the pituitary gland is developed. Called also craniobuccal or craniopharyngeal pouch.
rectouterine pouch Douglas' cul-de-sac.
Seessel's pouch an outpouching of the embryonic pharynx rostrad to the pharyngeal membrane and caudal to Rathke's pouch.

Rathke's pouch

[rät′kēz]
Etymology: Martin H. Rathke, German anatomist, 1793-1860; OFr, pouche
a depression that forms in the roof of the mouth of an embryo, anterior to the buccopharyngeal membrane, around the fourth week of gestation. The walls of the diverticulum develop into the anterior lobe of the pituitary gland.

Rathke's pouch, cleft, pocket

a diverticulum from the embryonic buccal cavity from which the anterior pituitary is developed.

Rathke's pouch pouch cyst
failure of the ectoderm of Rathke's pouch to differentiate into adenohypophyseal tissue. A cyst fills the space normally occupied by the pituitary gland and the animal is a dwarf with panhypopituitarism.