craniopharyngeal duct

cra·ni·o·pha·ryn·ge·al duct

the slender tubular part of the adenohypophysial diverticulum.

cra·ni·o·pha·ryn·ge·al duct

(krānē-ō-fă-rinjē-ăl dŭkt)
Slender tubular part of the pituitary diverticulum.


pertaining to the cranium and pharynx.

craniopharyngeal duct
the primordial outgrowth from the roof of the pharynx from which the posterior lobe of the pituitary gland is formed; a vestigial structure in most species; see also rathke's pouch.
craniopharyngeal duct cyst
cysts from remnants of the distal craniopharyngeal duct are found close to the pituitary gland. Pressure on the gland and inflammation and subsequent fibrosis of it can cause a syndrome of adenohypophyseal hypofunction. There may be blindness, obesity and diabetes insipidus. Brachyocephalic breeds of dogs are predisposed.
References in periodicals archive ?
It is supposed to develop owing to transformation of embryonic squamous cell structures along the path of the craniopharyngeal duct.
In 1904, Erdheim postulated that craniopharyngiomas developed from squamous remnants of the obliterated craniopharyngeal duct, suggesting that these tumors may arise at any point along the tract of migration of Rathke's pouch from the vomer, the roof of the nasopharynx, or through the midline sphenoid bone beneath the floor of the sella turcica.
Craniopharyngiomas are suprasellar tumours that are believed to arise from craniopharyngeal duct remnants.