![]() The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M. Liver hormone related to growth (insulin-like growth factor-1)Ī problem with the pituitary gland can lead to problems with any of the above glands and abnormal hormone levels of these glands.Ī.D.A.M., Inc.The pituitary gland makes several hormones that control other glands and hormones in the body, including: Secondary empty sella syndrome occurs when the sella is empty because the pituitary gland has been damaged by:Įmpty sella syndrome may be seen in a condition called pseudotumor cerebri, which mainly affects young, obese women and causes the CSF to be under higher pressure. Primary empty sella syndrome occurs when one of the layers (arachnoid) covering the outside of the brain bulges down into the sella and presses on the pituitary. This causes the gland to shrink or flatten. With empty sella syndrome, CSF has leaked into the sella turcica, putting pressure on the pituitary. CSF is fluid that surrounds the brain and spinal cord. It is often filled with cerebrospinal fluid (CSF). This makes the area of the pituitary gland look like an "empty sella." But the sella is not actually empty. When the pituitary gland shrinks or becomes flattened, it cannot be seen on an MRI scan. The pituitary sits protected inside a saddle-like bony compartment in the base of the skull. It is attached to the bottom of the brain by the pituitary stalk. All rights reserved.The pituitary is a small gland located just underneath the brain. An empty sella is a noteworthy finding because of its potential for endocrine and neuro-ophthalmological disorders despite an asymptomatic presentation.Ĭopyright © 2015 American Association of Orthodontists. The challenge in distinguishing these lesions radiographically with chordomas warrants follow-up to confirm a diagnosis. Notochordal remnants may present as nonexpansile intraosseous low-density areas. Orthodontists and implant surgeons may come across incidental findings outside their area of expertise on CBCT scans, highlighting the importance of appropriate consultation with maxillofacial radiologists. The impression after the magnetic resonance imaging was an enlarged and partially empty sella with no evidence of a pituitary mass. The CBCT study for the implant patient demonstrated an enlarged sella turcica. The impression after magnetic resonance imaging was a notochordal remnant, although chordoma was also included in the differential, warranting a 6-month follow-up magnetic resonance image to confirm the diagnosis. The orthodontic patient was tentatively diagnosed with a notochordal remnant in the clivus the implant patient exhibited an empty sella turcica.įor the clivus lesion in the orthodontic patient, an artifact was ruled out after a second CBCT image and further distinguished from a fat-containing tumor after magnetic resonance imaging. Two patients with incidental findings of skull-base abnormalities are presented. Often overlooked are incidental findings outside the treatment region of interest. Cone-beam computed tomography (CBCT) gives orthodontists and other dental clinicians 3-dimensional information for planning treatment in the craniofacial region. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |