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Sella turcica

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https://www.readbyqxmd.com/read/29323624/sella-turcica-bridging-and-ossified-carotico-clinoid-ligament-correlation-with-sex-and-age
#1
Daniele Gibelli, Michaela Cellina, Stefano Gibelli, Marta Panzeri, Antonio Giancarlo Oliva, Giovanni Termine, Chiarella Sforza
Aim Sella turcica bridging and ossified carotico-clinoid ligament are two variants of the sella turcica, the origin of which is partially unknown. These variations should be properly recognised, as they may hamper the removal of the anterior clinoid process in surgical procedures. Therefore, our aim was to determine the prevalence of these two anatomical variants and to investigate their prevalence according to patient sex and age in a series of maxilla computed tomography scans. Materials and methods We revised 300 computed tomography scans of the head from northern Italian patients, stratified into three age groups (18-40 years, 41-60 years, >60 years): a logistic regression analysis was used to explore an association of sella turcica bridging with age and sex through Matlab software, also including a test for the extracted model ( P < 0...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29242977/the-mechanism-in-junctional-failure-of-thoraco-lumbar-fusions-part-i-biomechanical-analysis-of-mechanisms-responsible-of-vertebral-overstress-and-description-of-the-cervical-inclination-angle-cia
#2
Jean-Charles Le Huec, Jonathon Richards, Andreas Tsoupras, Rachel Price, Amélie Léglise, Antonio A Faundez
PURPOSE: The purpose of the study is to describe the biomechanical theory explaining junctional breakdowns in thoraco-lumbar fusions, by taking the example of vertebral compression fractures. Also, a new angle, the cervical inclination angle (CIA), describing the relative position of the head at each vertebral level, is presented. METHODS: For the CIA, the data were collected from 137 asymptomatic subjects of a prospective database, containing clinical and radiologic informations...
December 14, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29187947/macroprolactinemia-and-empty-sella-syndrome
#3
Ach Taieb, Kacem Njah Maha, Yosra Hasni El Abed, Amel Maaroufi Beizig, Molka Chaieb Chadli, Koussay Ach
Macroprolactinemia is a polymeric form of prolactin-release, causing mildly symptomatic clinical pictures. The former can be isolated or associated with other causes of hyperprolactinemia. The association with an empty sella syndrome is rare. We report a case of a female patient discovered with this association. It's about a female patient 47 years old, followed up since the age of 31 years for bilateral galactorrhea and a spaniomenorrhea. There has been no associated drug intake. Her exploration has showed a serum prolactin level of 635 mIU/L...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29158862/-epidermoid-cyst-in-the-sella-turcica-about-a-case
#4
Ghizlane El Mghari, Bouchra Rafiq, Nawal El Ansari
Epidermoid cyst (EC) or cholesteatoma is a benign tumor, often of congenital origin, occurring in the sub-arachnoidian spaces. Its treatment is based on surgery. We report the case of a 38 year-old patient presenting with progressive intracranial hypertension syndrome associated with anterior pituitary insufficiency signs of the corticotropic, thyrotropic, gonadotropic axis occurring 1 year before. Brain MRI showed a craniopharyngioma. Anatomopathologic evaluation of the specimen showed epidermoid cyst.
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29155113/small-cell-glioblastoma-of-the-sella-turcica-region-a-case-report-and-review-of-the-literature
#5
Shuanglin Deng, Linlin Liu, Danhua Wang, Dan Tong, Gang Zhao
BACKGROUND: Glioblastomas in the sellar region are very rare; in most cases, the tumor originates from the optic nerve/optic chiasm. Only 4 cases of sellar glioblastoma with a non-optic origin have been reported. We present such a case with detailed clinical, imaging and histopathological information. A review of similar published cases is also presented. CASE PRESENTATION: A 42-year-old woman presented with endocrinological abnormalities including, amenorrhea and lactation, symptoms of diabetes insipidus and signs of elevated ICP...
November 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29138072/preoperative-assessment-of-craniopharyngioma-adherence-mri-findings-correlated-with-the-severity-of-tumor-attachment-to-the-hypothalamus
#6
Ruth Prieto, José M Pascual, Maria Rosdolsky, Laura Barrios
BACKGROUND: Craniopharyngioma (CP) adherence represents a heterogeneous pathological feature that critically influences the potentially safe and radical resection. OBJECTIVE: To define the MRI predictors of CP adherence severity. METHODS: This study retrospectively investigated a cohort of 200 surgically treated CPs with their corresponding preoperative conventional MRI scans. MRI findings related to the distortions of anatomical structures along the sella turcica-third ventricle axis caused by CPs, in addition to the tumor's shape and calcifications were analyzed and correlated with the definitive type of CP adherence observed during the surgical procedures...
November 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29061463/presentation-treatment-and-long-term-outcome-of-intrasellar-chordoma-a-pooled-analysis-of-institutional-seer-and-published-data
#7
Abdul-Kareem Ahmed, Hassan Y Dawood, Omar M Arnaout, Edward R Laws, Timothy R Smith
BACKGROUND: Chordoma that occurs primarily in the sella turcica is rare and presents unique treatment challenges. OBJECTIVE: The purpose of this study was to determine common features, treatment approaches and survival characteristics of intrasellar chordoma. METHODS: Institutional databases, the Surveillance, Epidemiology, and End Results (SEER) database, and PubMed/EMBASE were queried for chordoma with a primarily intrasellar component. The SEER database was also queried for adult skull base chordoma...
October 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29055741/radiologically-defining-horizontal-gaze-using-eos-imaging-a-prospective-study-of-healthy-subjects-and-a-retrospective-audit
#8
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Vivienne Chien-Lin Ho, Syifa Bte Azhar, Joel-Louis Lim, Gabriel Ka-Po Liu, Hee-Kit Wong
BACKGROUND CONTEXT: As sagittal alignment of the cervical spine is important for maintaining horizontal gaze, it is important to determine the former for surgical correction. However, horizontal gaze remains poorly-defined from a radiological point of view. PURPOSE: The objective of this study was to establish radiological criteria to define horizontal gaze. STUDY DESIGN/SETTING: This study was conducted at a tertiary health-care institution over a 1-month period...
October 18, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29027568/-diagnostics-and-treatment-of-acromegaly-necessity-for-targeted-monitoring-of-comorbidities
#9
S Petersenn, M Christ-Crain, M Droste, R Finke, J Flitsch, I Kreitschmann-Andermahr, A Luger, J Schopohl, G Stalla
Acromegaly is a rare and severe condition, presenting with typical signs and symptoms. The diagnosis is often initially made years after the first manifestations of the disease. In more than 99% of patients the disease is caused by a benign pituitary tumor that secretes growth hormone (GH). The diagnosis is based on the presence of increased insulin-like growth factor 1 (IGF-1) levels and a lack of GH suppression in the oral glucose tolerance test. The standard imaging procedure for tumor detection is magnetic resonance imaging in the region of the sella turcica...
November 2017: Der Internist
https://www.readbyqxmd.com/read/29017976/outcomes-after-transcranial-and-endoscopic-endonasal-approach-for-tuberculum-meningiomas-a-retrospective-comparison
#10
Sang Woo Song, Yong Hwy Kim, Jin Wook Kim, Chul-Kee Park, Jung Eun Kim, Dong Gyu Kim, Young-Cho Koh, Hee-Won Jung
BACKGROUND: Degree of resection and visual outcome are the main concerns in the surgical resection of tuberculum sellae meningioma (TSM). In addition to the transcranial approach (TCA), the endoscopic endonasal approach (EEA) has been used increasingly. However, the controversy regarding the optimal surgical approach is not clearly resolved. METHODS: We compared the surgical outcomes of each approach for TSMs from 44 patients receiving EEA and 40 patients receiving TCA in 2 institutions between 2004 and 2015...
October 7, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28980049/effects-of-endogenous-hypercortisolism-on-bone-mrna-and-microrna-expression-in-humans
#11
Z E Belaya, T A Grebennikova, G A Melnichenko, A G Nikitin, A G Solodovnikov, O I Brovkina, A U Grigoriev, L Y Rozhinskaya, I I Dedov
Hypercortisolism in humans suppresses osteoblastogenesis and osteoblast function through the upregulation of Wnt-signaling antagonists (sclerostin, Dkk1) and changes in microRNAs levels (miR-125b-5p, miR-218-5p, miR-34a-5p, miR-188-3p, miR-199a-5p) which are associated with mesenchymal stem-cell commitment to adipocytes or cartilage cells over the osteoblasts. INTRODUCTION: The purpose of this study was to evaluate the responses of bone to chronic glucocorticoid (GC) excess by measuring the levels of selected mRNA and microRNA (miR) in bone samples of patients with Cushing's disease (CD)...
October 4, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28954263/beneficial-effects-of-high-doses-of-cabergoline-in-the-treatment-of-giant-prolactinoma-resistant-to-dopamine-agonists-a-case-report-with-a-21-year-follow-up
#12
Lucas Faria de Castro, Maria de Fátima Magalhães Gonzaga, Luciana Ansaneli Naves, José Luiz Mendonça, Benicio Oton de Lima, Luiz Augusto Casulari
INTRODUCTION: Prolactinomas are pituitary tumors with a very low prevalence in childhood and adolescence compared to adulthood. This condition is preferentially treated with dopamine agonists. Resistance to these drugs is rare. CASE REPORT: We describe the case of a boy diagnosed with macroadenoma at the age of 9 and followed up for 21 years. He did not fully respond to treatment with dopamine agonists. His initial prolactin level was 2,400 ng/mL (in males, normal values are <16...
September 26, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28935625/topographic-diagnosis-of-craniopharyngiomas-the-accuracy-of-mri-findings-observed-on-conventional-t1-and-t2-images
#13
R Prieto, J M Pascual, L Barrios
BACKGROUND AND PURPOSE: The topography of craniopharyngiomas has proved fundamental in predicting the involvement of vital brain structures and the possibility of achieving a safe radical resection. Beyond the imprecise term "suprasellar," indiscriminately used for craniopharyngiomas, an accurate definition of craniopharyngioma topography should be assessed by preoperative MR imaging. The objective of this study was to investigate the MRI findings that help define craniopharyngioma topography...
November 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28904276/a-case-of-acromegaly-in-which-a-pituitary-gland-tumor-was-reduced-significantly-by-administering-octreotide-long-acting-release-lar-and-could-be-removed-surgically
#14
Tadashi Arao, Yosuke Okada, Fumi Uemura, Shigeru Nishizawa, Yoshiya Tanaka
A 54-year-old woman was admitted to our hospital for detailed examination of acromegaly because she noticed bilateral hand and finger swelling at the age of 43 and plantar thickening, facial changes and unclear articulation at the age of 49. She had prominent brow ridges, mandibular protrusion, and enlargement of the hands, feet, nasal wings, lips and tongue. Her growth hormone (GH) level was 39.8 ng/ml, insulin-like growth factor-1 (IGF-1) level was 717 ng/ml, GH level was not suppressed (22.9 ng/ml) during a 75-g oral glucose tolerance test (OGTT)...
2017: Journal of UOEH
https://www.readbyqxmd.com/read/28885086/enlarging-pediatric-ectopic-rathke-s-cleft-cyst-in-the-prepontine-cistern-case-report
#15
Takamasa Kamei, Masahiro Nonaka, Yoshiko Uemura, Yasuo Yamanouchi, Yumiko Komori, Ryoichi Iwata, Junichi Takeda, Tetsuo Hashiba, Kunikazu Yoshimura, Akio Asai
Rathke's cleft cyst is a cystic disease that occurs in the sella turcica or, occasionally, in the suprasellar area. An ectopic Rathke's cleft cyst is extremely rare, and its nature is less well understood. The authors report the case of a 14-year-old girl who presented with a growing cystic lesion in the prepontine cistern, immediately behind the dorsum sellae. Preoperative imaging and intraoperative investigation showed part of the cyst wall continuing into the dorsum sellae, to the pituitary gland. The cisternal portion of the cyst wall was totally resected via a right subtemporal approach...
November 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28862492/three-dimensional-positional-assessment-of-glenoid-fossae-and-mandibular-condyles-in-patients-with-class-ii-subdivision-malocclusion
#16
Juliana Macêdo de Mattos, Juan Martin Palomo, Antonio Carlos de Oliveira Ruellas, Paula Loureiro Cheib, Manhal Eliliwi, Bernardo Quiroga Souki
OBJECTIVES: To test the null hypotheses that the positions of the glenoid fossae and mandibular condyles are identical on the Class I and Class II sides of patients with Class II subdivision malocclusion. MATERIALS AND METHODS: Retrospective three-dimensional (3D) assessments of the positions of the glenoid fossae and mandibular condyles were made in patients with Class II malocclusion. Relative to a fiducial reference at the anterior cranial base, distances from the glenoid fossae and condyles were calculated in pretreatment cone beam computed tomographic scans of 82 patients: 41 with Class II and 41 with Class II subdivision malocclusions...
September 1, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28825890/case-245-erdheim-chester-disease
#17
Mark D Mamlouk, Mariam S Aboian, Christine M Glastonbury
History A 53-year-old man experienced headache and double vision that progressed over 1 year. After a traumatic fall, he was hospitalized, and proptosis was identified at physical examination. Laboratory tests were remarkable for leukocytosis. Hematocrit level, thyroid stimulating hormone level, autoimmune antibody level, erythrocyte sedimentation rate, and C-reactive protein level were normal. Computed tomography (CT) of the head revealed bilateral intraconal masses, for which magnetic resonance (MR) imaging of the orbits was subsequently performed ( Fig 1 )...
September 2017: Radiology
https://www.readbyqxmd.com/read/28799880/a-morphometric-survey-of-the-parasellar-region-in-more-than-2700-skulls-emphasis-on-the-middle-clinoid-process-variants-and-implications-in-endoscopic-and-microsurgical-approaches
#18
Akshay Sharma, Gabrielle E Rieth, Joseph E Tanenbaum, James S Williams, Nakao Ota, Srikant Chakravarthi, Sunil Manjila, Amin Kassam, Bulent Yapicilar
OBJECTIVE The middle clinoid process (MCP) is a bony projection that extends from the sphenoid bone near the lateral margin of the sella turcica. The varied prevalence and morphological features of the MCP in populations stratified by age, race, and sex are unknown; however, the knowledge of its anatomy and preoperative recognition on CT scans can aid greatly in complication avoidance and management. The aim of this study was to further illustrate the surgical anatomy of the parasellar region and to quantify the incidence of MCP and caroticoclinoid rings (CCRs) in dried preserved human anatomical specimens...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28737426/posterior-cranial-base-natural-growth-and-development-a-systematic-review
#19
Kris Currie, Dena Sawchuk, Humam Saltaji, Heesoo Oh, Carlos Flores-Mir, Manuel Lagravere
OBJECTIVE: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). MATERIALS AND METHODS: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in duplicate...
July 24, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28735137/endonasal-operative-corridor-expansion-by-sphenoidal-pneumosinus-dilatans-in-tuberculum-sellae-meningiomas
#20
Amol Raheja, Michael Karsy, Ilyas Eli, Jian Guan, William T Couldwell
BACKGROUND: A retrospective cohort study of patients with tuberculum sellae meningioma (TSM)-associated sphenoidal pneumosinus dilatans (PSD) over a recent epoch was evaluated using a propensity-matched morphometric analysis. METHODS: A total of 38 patients with TSM and sphenoidal PSD were identified and matched by age and sex to 32 patients without tumors (controls). RESULTS: Overall, no significant difference between test and control groups was noted in sphenoid sinus size or other parameters; however, significantly greater mean distances from the posterior margin of the planum sphenoidale to the diaphragma sella (0...
October 2017: World Neurosurgery
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