What is hypophyseal fossa?

The pituitary fossa (hypophyseal fossa) is an indentation in the roof of the body of the sphenoid bone in the middle cranial fossa.

What fits into the hypophyseal fossa?

In the middle of the middle cranial fossa is the pituitary fossa or sella turcica (hypophyseal fossa) containing the pituitary gland. It is roofed by a fold of dura mater, the diaphragma sellae, and this is pierced by the infundibulum (Fig. 7.51).

What structure is found in the hypophyseal fossa?

The pituitary gland is within the sella turcica or the hypophyseal fossa. This structure is present near the center at the base of the cranium and is fibro-osseous. The anatomical boundaries of the gland have clinical and surgical significance.

Is empty sella syndrome serious?

It is not a life-threatening condition. You may not have any symptoms. If symptoms occur, they may include impotence, less desire for sex, and irregular menstrual periods. You may not need treatment if you do not have symptoms, and if your pituitary gland is not enlarged.

Where is the hypophyseal portal system found?

The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland.

What are the symptoms of pituitary Microadenoma?

Symptoms of a pituitary microadenoma may include the following:

Tiredness.
Headaches.
Vomiting.
Dizziness.
Vision problems.
Nausea.
Menstrual or breast changes.
Unexplained hair growth or loss.

What is dorsum Sellae?

The dorsum sellae is the square shaped process of the sphenoid bone. It ascends superiorly from the posterior part of the sphenoid body to form the posterior wall of the sella turcica.

What is the superior hypophyseal artery?

The superior hypophyseal arteries supply the pituitary infundibulum and, through the pituitary portal system, supply the anterior pituitary gland. These arteries arise from the supraclinoid carotid and can be duplicated at times.

What does flattening of the pituitary gland mean?

The buildup of spinal fluid squashes the pituitary gland flat, so it looks like your sella turcica is empty. This condition is known as primary empty sella syndrome (ESS). Your pituitary gland also can be flattened or small because you’ve had surgery or radiation for a tumor or a serious head injury.

How do you fix empty sella syndrome?

For secondary empty sella syndrome, treatment involves replacing the hormones that are missing. In some cases, surgery is needed to repair the sella to prevent CSF from leaking into the nose and sinuses.

What are the hypophyseal portal veins?

What is the structure of the sella turcica?

Structure. The sella turcica is located in the sphenoid bone behind the chiasmatic groove and the tuberculum sellae. It belongs to the middle cranial fossa. The sella turcica’s most inferior portion is known as the hypophyseal fossa (the “seat of the saddle”), and contains the pituitary gland (hypophysis).

What is the hypophyseal fossa?

The pituitary fossa (hypophyseal fossa) is an indentation in the roof of the body of the sphenoid bone in the middle cranial fossa. It is bound anteriorly by the tuberculum sellae, in front of which lies the sulcus chiasmatica, and posteriorly by the dorsum sellae, a ridge of bone at either end of which lies the posterior clinoid processes.

What is the pituitary fossa?

The pituitary (hypophyseal) fossa or sella turcica is a midline, dural lined structure in the sphenoid bone, which houses the pituitary gland.

What is the clinical significance of empty sella syndrome?

Clinical significance. Empty sella syndrome is the condition of a shrunken or flattened pituitary gland. Since the sella turcica forms a bony caudal border for the pituitary gland, a pituitary tumor usually extends upward in the rostral direction into the suprasellar region.