What is infundibulum in the brain

AKA infundibulum or pituitary stalk, the infundibular stalk is a tube-like structure that connects the posterior pituitary to the hypothalamus. It allows for hormones synthesized in the hypothalamus to be sent to the posterior pituitary for release into the bloodstream. Know Your Brain: Pituitary Gland.

An infundibulum is not an aneurysm, though it may look like one. We see a lot of patients who are told they have an aneurysm, but really have an infundibulum, or are specifically referred to us so that we can figure out which of the two they have. Most of the time, we can do that with CT or MR. Occasionally, a catheter angiogram is required. The picture above tells the story.

What is infundibulum in the brain

An infundibulum plural: infundibula is a conical outpouching from an artery usually intracranial , with a broad base narrowing to an apex from which a vessel originates. The most common location for an infundibulum is the origin of the posterior communicating artery PCOM from the supraclinoid internal carotid artery. They are common, found in up to a quarter of all cerebral angiograms 1. The main importance of an infundibulum is that it may be mistaken for a saccular berry aneurysm which is rounded and has the branch at its base. An infundibulum in most cases measures less than 3 mm. Unlike an aneurysm, an infundibulum is not believed to be a risk for rupture and subarachnoid hemorrhage. Only very rarely does an infundibulum eventually develop into an aneurysm 1 and it is generally not thought that an incidental infundibulum requires follow-up unless additional clinical concern is present. Prudent factors that may indicate follow-up include large size, family history of subarachnoid hemorrhage or aneurysm, connective tissue disorders or history of dissection, or an aneurysm elsewhere. Articles: Saccular cerebral aneurysm Blood blister-like aneurysm Infundibulum disambiguation. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.

At the time the article was last revised Dagan Kaht had no recorded disclosures. Some of them require your consent. This means that they can not see blood vessels below a certain size.

The infundibulum is hollow from inside, creating a space within it, called the infundibular recess. Details suggest that the floor of the third ventricle or base of hypothalamus contains a raised area called tuber cinereum. This region has got the posterior pituitary or pars nervosa attached to it via a stalk called the infundibulum a. Infundibular recess lies within the infundibulum. In fact, this recess is a tubular extension of the third ventricle into the infundibulum or pituitary stalk and contains cerebrospinal fluid.

An infundibulum plural: infundibula is a conical outpouching from an artery usually intracranial , with a broad base narrowing to an apex from which a vessel originates. The most common location for an infundibulum is the origin of the posterior communicating artery PCOM from the supraclinoid internal carotid artery. They are common, found in up to a quarter of all cerebral angiograms 1. The main importance of an infundibulum is that it may be mistaken for a saccular berry aneurysm which is rounded and has the branch at its base. An infundibulum in most cases measures less than 3 mm. Unlike an aneurysm, an infundibulum is not believed to be a risk for rupture and subarachnoid hemorrhage. Only very rarely does an infundibulum eventually develop into an aneurysm 1 and it is generally not thought that an incidental infundibulum requires follow-up unless additional clinical concern is present. Prudent factors that may indicate follow-up include large size, family history of subarachnoid hemorrhage or aneurysm, connective tissue disorders or history of dissection, or an aneurysm elsewhere. Articles: Saccular cerebral aneurysm Blood blister-like aneurysm Infundibulum disambiguation. Updating… Please wait.

What is infundibulum in the brain

The pituitary stalk , also known as the infundibular stalk or simply the infundible , Fenderson's funnel , or the hypothalamo- neuro hypophyseal tract , is the connection between the hypothalamus and the neurohypophysis. The floor of the third ventricle is prolonged downward as a funnel-shaped recess—the infundibular recess —into the infundibulum, where the apex of the pituitary is attached. Damage to the pituitary stalk blocks the release of antidiuretic hormone , resulting in polydipsia excessive water intake and polyuria excessive urination. The diameter of the pituitary stalk at the level of optic chiasm is 3. Contents move to sidebar hide. Article Talk. Read Edit View history. Tools Tools. Download as PDF Printable version. Anatomical structure.

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It allows for hormones synthesized in the hypothalamus to be sent to the posterior pituitary for release into the bloodstream. The infundibulum is hollow from inside, creating a space within it, called the infundibular recess. A local or regional neurointerventional radiologist, endovascular neurologist, or endovascular neurosurgeon is the specialist to see. An infundibulum is not an aneurysm, though it may look like one. Clin Neuroradiol. For a patient, it is important to ask what the risks benefits and alternatives are in the specific place and from a specific operator. That is not common however. Does that mean this is no longer an infundibulum? For more information, see our privacy policy. My account. After reading this book, you will walk away with a greater appreciation for this bizarre organ. Notice also an infundibulum on the other end dashed arrow — a much less appreciated location. Save and continue Cancel. Citation, DOI, disclosures and article data.

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Tsutsumi, S. An infundibulum in most cases measures less than 3 mm. More examples of how medicine is art — the image below shows an ophthalmic artery aneurysm — not infundibulum, even though the ophthalmic artery origin is not on the side of what we decided is aneurysm, but the middle of it. Profile My cases. Essential technical cookies These are cookies that ensure the proper functioning of the website and allow its optimization detect browsing problems, connect to your IMAIOS account, online payments, debugging and website security. The progression of an infundibulum to aneurysm formation and rupture: case report and literature review. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Incoming Links. The disadvantage is that it is minimally invasive, and comes with potential for complications. Cases and figures. These cookies are used to measure audience: it allows to generate usage statistics useful for the improvement of the website. My account. Occasionally, a catheter angiogram is required. Cancel Submit.