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https://www.readbyqxmd.com/read/28120170/xanthomatous-hypophysitis-is-associated-with-ruptured-rathke-s-cleft-cyst
#1
Kai Duan, Sylvia L Asa, Daniel Winer, Zadeh Gelareh, Fred Gentili, Ozgur Mete
Xanthomatous hypophysitis is a rare inflammatory disease of the pituitary gland that can mimic a neoplastic lesion clinically and radiologically. Its pathogenesis remains largely unknown, although recent evidence suggests that pituitary inflammation may occur as a secondary reaction to mucous content released from a ruptured cyst. In a series of 1221 pituitary specimens, we identified seven cases of xanthomatous hypophysitis. Six patients had complete radiological and biochemical workup preoperatively: a cystic-appearing pituitary mass was identified in all six patients (100%) with a mean size of 2...
March 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28109490/risk-factors-for-cerebrospinal-fluid-leak-in-pediatric-patients-undergoing-endoscopic-endonasal-skull-base-surgery
#2
Amanda L Stapleton, Elizabeth C Tyler-Kabara, Paul A Gardner, Carl H Snyderman, Eric W Wang
OBJECTIVES: To determine the risk factors associated with cerebrospinal fluid (CSF) leak following endoscopic endonasal surgery (EES) for pediatric skull base lesions. METHODS: Retrospective chart review of pediatric patients (ages 1 month to 18 years) treated for skull base lesions with EES from 1999 to 2014. Five pathologies were reviewed: craniopharyngioma, clival chordoma, pituitary adenoma, pituitary carcinoma, and Rathke's cleft cyst. Fisher's exact tests were used to evaluate the different factors to determine which had a statistically higher risk of leading to a post-operative CSF leak...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28102527/teratoma-of-the-sellar-region-a-case-report
#3
Wolfgang Saeger, Azadeh Ebrahimi, Rudi Beschorner, Hildegard Spital, Jürgen Honegger, Waldemar Wilczak
The case report describes a teratoma of the sellar region with a gland forming and an immature, relatively clear undifferentiated component without signs of anaplasia. Both components express TTF-1 indicating their presumable origin in the neurohypophysis as part of the circumventricular organs. The differential diagnosis includes pituitary adenoma and spindle cell oncocytoma with inclusion of Rathke's cleft cyst, pituitary blastoma, yolk sac tumor, and other germ cell tumors. The prognosis is the same as in the immature teratomas in the gonads, specifically unclear...
January 19, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28076290/tailored-interactive-sequences-for-continuous-mr-image-guided-freehand-biopsies-of-different-organs-in-an-open-system-at-1-0-tesla-t-initial-experience
#4
Florian Streitparth, Christian Althoff, Martin Jonczyk, Felix Guettler, Martin Maurer, Hendrik Rathke, Keno Moritz Sponheuer, Bernd Hamm, Ulf K Teichgräber, Maximilian de Bucourt
OBJECTIVES: To assess the feasibility, image quality, and accuracy of freehand biopsies of liver, bone, muscle, vertebral disc, soft tissue, and other lesions using balanced steady-state free precession (SSFP, balanced fast field echo: bFFE), spoiled and nonspoiled gradient echo (FFE), and turbo spin echo (TSE) sequences for interactive continuous navigation in an open magnetic resonance imaging (MRI) system at 1.0 tesla (T). METHODS: Twenty-six MR-guided biopsies (five liver, five bone, four muscle, four vertebral disc, one lung, one kidney, one suprarenal gland, and five soft or other tissue) were performed in 23 patients in a 1...
January 11, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28059626/giant-multi-compartmental-suprasellar-rathke-s-cleft-cyst-with-restriction-on-diffusion-weighted-images
#5
Laxminadh Sivaraju, Narayanam Anantha Sai Kiran, Arun S Rao, Nandita Ghosal, Alangar S Hegde
Rathke's cleft cysts are congenital lesions seen in sellar-suprasellar regions. We report a case of giant Rathke cyst in a 43-year-old patient with multi-compartmental involvement who presented with seizures with almost normal visual acuity. We discuss radiological and pathological features of various differential diagnoses for the giant suprasellar Rathke's cyst.
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28057594/significant-improvement-in-chronic-persistent-headaches-caused-by-small-rathke-cleft-cysts-after-transsphenoidal-surgery
#6
Issei Fukui, Yasuhiko Hayashi, Daisuke Kita, Yasuo Sasagawa, Masahiro Oishi, Osamu Tachibana, Mitsutoshi Nakada
PURPOSE: Rathke cleft cysts (RCC) are usually asymptomatic and can be observed using conservative methods. However, some patients with RCCs have severe headaches even if they are small enough to be confined to the sella, and these small RCCs have seldom been discussed. This study presents an investigation into clinical characteristics of small RCCs associated with severe headaches, demonstrating efficacy and safety of endoscopic transsphenoidal surgery (ETSS) to relieve headaches. METHODS: In this study, 13 patients with small RCCs (maximum diameter < 10mm) who presented with headaches and were treated by ETSS at our institute from 2009 to 2014 were recruited...
January 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28005827/spontaneous-involution-of-a-rathke-cleft-cyst
#7
Lei Cheng, Pin Guo, Peng Jin, Huanting Li, Mingchao Fan, Enyuan Cai
Rathke cleft cysts (RCCs) are nonneoplastic lesions that are thought to be the remnants of Rathke cleft pouch. The authors report a patient presented with a headache and was diagnosed with RCC on imaging. The lesion underwent spontaneous involution. The authors suggest that patients presenting solely with a headache to be treated conservatively, because it is uncertain whether a headache is definitively associated with RCCs and because there is the possibility of spontaneous regression.
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27917055/distribution-and-species-identification-in-the-crustacean-isopod-genus-dynamene-leach-1814-along-the-north-east-atlantic-black-sea-axis
#8
Pedro E Vieira, Henrique Queiroga, Filipe O Costa, David M Holdich
Sphaeromatid isopods, such as Dynamene, are common and abundant members of the invertebrate fauna of littoral and shallow sublittoral substrates. Six species of Dynamene occur in the northern hemisphere. Only two species exist outside this range, in Australia. The distribution of the various species in the NE Atlantic-Black Sea axis has been controversial due to the difficulty in the identification of the different species. This has led to inaccurate records of their distribution, ultimately generating uncertain or faulty assessments on the biodiversity of these habitats...
2016: ZooKeys
https://www.readbyqxmd.com/read/27903019/osteochondroma-presenting-as-a-calcified-mass-in-the-sellar-region-and-review-of-the-literature
#9
Kazuya Sekiguchi, Satoshi Tsutsumi, Sho Arai, Senshu Nonaka, Takamoto Suzuki, Hisato Ishii, Hiroshi Izumi, Yukimasa Yasumoto
Objective Osteochondroma (OC) is the most common benign bone neoplasm. It infrequently occurs in the cranial cavity as a calcified lesion and very rarely presents in the sellar region. The present study summarizes the knowledge about OCs of the sellar region. Methods We searched the literature search for the clinical appearance of OCs and other calcified pathologies occurring in the sellar region. Results A total of 21 English-language articles published from 1961 to 2015 documented cases of calcified lesions in the sellar region including cerebral aneurysm, chondroid chordoma, chondroma, craniopharyngioma, OC, odontome, osteoma, pituitary adenoma, pituitary stone, Rathke cleft cyst, retinoblastoma, schwannoma, and xanthogranuloma...
November 30, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/27867913/spontaneous-involution-of-rathke-s-cleft-cysts-without-visual-symptoms
#10
Chang-Wook Kim, Kihwan Hwang, Jin-Deok Joo, Young-Hoon Kim, Jung Ho Han, Chae-Yong Kim
BACKGROUND: There have been various reports in the literature regarding the conservative management of pituitary apoplexy, pituitary incidentalomas and Rathke cleft cysts (RCCs). However, to the best of our knowledge, spontaneous involution of cystic sellar mass has rarely been reported. We report 14 cases of cystic sellar masses with spontaneous involution. METHODS: A total of 14 patients with spontaneous regression of cystic sellar masses in our hospital were included...
October 2016: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/27837386/cholesterol-granulomas-presenting-as-sellar-masses-a-similar-but-clinically-distinct-entity-from-craniopharyngioma-and-rathke-s-cleft-cyst
#11
Raúl A Hernández-Estrada, Varun R Kshettry, Ashley N Vogel, Mark T Curtis, James J Evans
PURPOSE: Cholesterol granulomas in the sella are rare and can mimic the appearance of craniopharyngioma or Rathke's cleft cysts. Information regarding the clinical presentation, imaging characteristics, and clinical course of sellar cholesterol granulomas can help clinicians to differentiate these lesions from other sellar cystic lesions. METHODS: We present three cases of sellar cholesterol granulomas. A literature review was performed for all cases of sellar cholesterol granulomas with individual patient data reported...
November 11, 2016: Pituitary
https://www.readbyqxmd.com/read/27833409/preoperative-coiling-of-coexisting-intracranial-aneurysm-and-subsequent-brain-tumor-surgery
#12
Keun Young Park, Byung Moon Kim, Dong Joon Kim
OBJECTIVE: Few studies have investigated treatment strategies for brain tumor with a coexisting unruptured intracranial aneurysm (cUIA). The purpose of this study was to evaluate the safety and efficacy of preoperative coiling for cUIA, and subsequent brain tumor surgery. MATERIALS AND METHODS: A total of 19 patients (mean age, 55.2 years; M:F = 4:15) underwent preoperative coiling for 23 cUIAs and subsequent brain tumor surgery. Primary brain tumors were meningiomas (n = 7, 36...
November 2016: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/27827294/intracystic-nodule-in-a-rathke-s-cleft-cyst
#13
Sinead Culleton, Hong Kuan Kok, Seamus Looby, Alan O'Hare, John Thornton, Paul Brennan, Hamed Asadi
No abstract text is available yet for this article.
November 2016: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/27777166/rathke-cleft-cyst-with-evidence-of-rupture-into-subarachnoid-space
#14
Hiroshi Yokota, Yuki Ida, Daisuke Wajima, Fumihiko Nishimura, Hiroyuki Nakase
BACKGROUND: A Rathke cleft cyst (RCC) with nonhemorrhagic rupture mimicking pituitary apoplexy has been reported rarely. CASE DESCRIPTION: A 52-year-old woman, previously diagnosed with asymptomatic RCC, came to us with a severe headache, along with visual dysfunction and symptoms of pituitary insufficiency. Fluid-attenuated inversion recovery magnetic resonance imaging demonstrated diffuse hyperintensity in the cerebral cisterns, whereas watery clear cerebrospinal fluid was obtained by lumbar puncture...
January 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27773901/a-case-of-bacterial-meningitis-caused-by-methicillin-resistant-staphylococcus-lugdunensis-after-surgery
#15
Yasuhiro Sasaki, Ayumi Kanamaru, Hisae Uchida, Masataka Yano, Hiroshi Tada
An 51-year-old man had undergone surgery for Rathke's cleft cyst by transsphenoidal approach on October 2015. After the surgery, cerebrospinal fluid (CSF) rhinorrhea arose. Surgical treatment of CSF rhinorrhea was performed by the same approach. Ten days after reoperation, he suffered from severe headache, high fever, and nuchal rigidity. CSF findings indicated bacterial meningitis. CSF culture showed methicillin-resistant Staphylococcus lugdunensis. He received vancomycin intravenously for 19 days and recovered from the bacterial meningitis with no serious complication...
November 29, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27769949/rathke-cleft-cyst-with-entirely-ossified-cyst-wall-and-partially-solid-content-in-the-cyst-a-case-report-and-literature-review
#16
Yasuhiko Hayashi, Masahiro Oishi, Issei Fukui, Yasuo Sasagawa, Yasuhiro Aida, Mitsutoshi Nakada
BACKGROUND: In Rathke cleft cysts (RCCs), inflammation by the cyst contents infrequently spreads to the surrounding structures. Calcification, which is regarded as a consequence of chronic inflammation of the cyst wall, can rarely be found in RCCs, and moreover, ossification is extremely rare. CLINICAL PRESENTATION: A 60-year-old woman presented with headaches, fatigue and weight loss due to panhypopituitarism. Magnetic Resonance imaging revealed a mass lesion in the sellar region, which was comprised of two different parts, with hypointensity anteriorly and hyperintensity posteriorly on T1-weighted image (WI), and the rim with significant hypointensity entirely on T2-WI...
October 18, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27763894/histological-features-of-pituitary-adenomas-and-sellar-region-masses
#17
Bette K Kleinschmidt-DeMasters
PURPOSE OF REVIEW: Most pituitary region masses are pituitary adenomas; however, when other sellar region masses are encountered by clinicians or pathologists, the differential diagnosis can be broad. This review will focus on updates for pituitary adenomas, as well as briefly discuss some of these other entities: Rathke cleft cyst, hypophysitis, craniopharyngioma, pituicytoma, and spindle cell oncocytoma. RECENT FINDINGS: The use of new immunohistochemical (IHC) tools for assessing transcription factors, pituitary transcription factor-1, steroidogenic factor-1, and the not-yet-widely available Tpit IHC have provided insights into origin particularly of clinically silent and even hormone-negative pituitary adenomas...
December 2016: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/27755405/spontaneous-involution-of-a-rathke-cleft-cyst
#18
Lei Cheng, Pin Guo, Peng Jin, Huanting Li, Mingchao Fan, Enyuan Cai
Rathke cleft cysts (RCCs) are nonneoplastic lesions that are thought to be the remnants of Rathke cleft pouch. The authors report a patient presented with a headache and was diagnosed with RCC on imaging. The lesion underwent spontaneous involution. The authors suggest that patients presenting solely with a headache to be treated conservatively, because it is uncertain whether a headache is definitively associated with RCCs and because there is the possibility of spontaneous regression.
October 14, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27600168/spontaneous-pituitary-adenoma-occurring-after-resection-of-a-rathke-s-cleft-cyst
#19
Nauman S Chaudhry, Michael R Raber, David J Cote, Edward R Laws
Rathke's cleft cysts (RCC) are benign cystic lesions that originate from remnants of the epithelial lining of Rathke's pouch. RCC are known rarely to occur together with a concomitant pituitary adenoma. Here, we report a patient with a pituitary adenoma arising in the same location as a previously-resected RCC, 3 years post-operatively, and review the literature of "collision" sellar lesions. Consecutive transsphenoidal operations from a single-center between 2008 and 2016 were reviewed to identify patients with pituitary adenoma arising after surgical resection of RCC, and a systematic search of the literature was also performed to identify such patient reports, as well as reports of concomitant pituitary adenoma and RCC...
November 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27590887/identification-of-marker-genes-for-pars-tuberalis-morphogenesis-in-chick-embryo-expression-of-cytokine-like-1-and-gap-junction-protein-alpha-5-in-pars-tuberalis
#20
Sayaka Aizawa, Yuriko Higaki, Amrita Dudaui, Mai Nagasaka, Sumio Takahashi, Ichiro Sakata, Takafumi Sakai
The adenohypophysis is formed from the oral ectoderm and consists of the pars distalis (PD), pars intermedia, and pars tuberalis (PT). The mechanisms of PD development have been extensively studied, and the cellular differentiation of the PD is well understood. However, the morphogenesis and differentiation of the PT are still unclear, and the genes expressed during PT development remain largely unknown. We have explored genes specifically expressed in the PT during embryonic development and analyzed their spatiotemporal expression patterns...
September 3, 2016: Cell and Tissue Research
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