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https://www.readbyqxmd.com/read/28102527/teratoma-of-the-sellar-region-a-case-report
#1
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/28098212/different-volumetric-measurement-methods-for-pituitary-adenomas-and-their-crucial-clinical-significance
#2
Chi-Cheng Chuang, Shinn-Yn Lin, Ping-Ching Pai, Jiun-Lin Yan, Cheng-Hong Toh, Shih-Tseng Lee, Kuo-Chen Wei, Zhuo-Hao Liu, Chung-Ming Chen, Yu-Chi Wang, Cheng-Chi Lee
Confirming the status of residual tumors is crucial. In stationary or spontaneous regression cases, early treatments are inappropriate. The long-used geometric calculation formula is 1/2 (length × width × height). However, it yields only rough estimates and is particularly unreliable for irregularly shaped masses. In our study, we attempted to propose a more accurate method. Between 2004 and 2014, 94 patients with pituitary tumors were enrolled in this retrospective study. All patients underwent transsphenoidal surgery and received magnetic resonance imaging (MRI)...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28096433/sex-differences-in-the-development-of-prolactinoma-in-mice-overexpressing-hcg%C3%AE-role-of-tgf%C3%AE-1
#3
Erika Yanil Faraoni, María Andrea Camilletti, Alejandra Inés Abeledo Machado, Laura Daniela Ratner, Fernanda De Fino, Ilpo T Huhtaniemi, Susana B Rulli, Graciela Diaz-Torga
Female transgenic mice that overexpress the human chorionic gonadotrophin β subunit (hCGβ+) develop prolactinomas, while hCGβ+ males do not. The high levels of circulating hCG induces massive luteinization in the ovary of hCGβ+ females, and progesterone becomes the primary steroid hormone produced, but estradiol remains at physiological level. The involvement of high levels of progesterone in lactotroph proliferation is not clearly understood; hence the pathogenesis of prolactinomas in hCGβ+ females remains unclear...
January 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28095038/pure-androgen-producing-adrenal-tumor-clinical-features-and-pathogenesis
#4
Anli Tong, Jun Jiang, Fen Wang, Chunyan Li, Yushi Zhang, Xueyan Wu
OBJECTIVE: Pure androgen-secreting adrenal tumors (PASATs) are extremely rare, most reports involving only a single case. This study examined 9 cases of PASAT, with an attempt to characterize its clinical features and to explore their possible pathogenesis. METHODS: Clinical data of 9 patients with PASAT were retrospectively reviewed. Immunostaining were conducted, and Aryl hydrocarbon receptor-interacting protein (AIP) were amplified and directly sequenced. RESULTS: The onset age of the patients ranged from 3...
January 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28093347/a-novel-invasive-related-biomarker-in-three-subtypes-of-non-functioning-pituitary-adenomas
#5
Yong Chen, Hong-Li Chuan, Sheng-Yuan Yu, Chu-Zhong Li, Zhe-Bao Wu, Gui-Lin Li, Ya-Zhuo Zhang
OBJECTIVES: To identify biomarkers key to invasiveness of the three subtypes of non-functioning pituitary adenomas (NFPAs) and provide a guidance for therapeutic decision-making and identification of potential adjuvant drugs. METHODS: Fifty NFPAs tumor tissues obtained from transsphenoidal surgery were used in the study. Three invasive NFPAs and four non-invasive NFPAs were used for gene expression microarray analyses; Additionally, there are five invasive NFPAs and four non-invasive NFPAs used for proteomic analyses...
January 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28090682/pituitary-macrotumor-causing-narcolepsy-cataplexy-in-a-dachshund
#6
S Schmid, A Hodshon, S Olin, I Pfeiffer, S Hecht
Familial narcolepsy secondary to breed-specific mutations in the hypocretin receptor 2 gene and sporadic narcolepsy associated with hypocretin ligand deficiencies occur in dogs. In this report, a pituitary mass is described as a unique cause of narcolepsy-cataplexy in a dog. A 6-year-old male neutered Dachshund had presented for acute onset of feeding-induced cataplexy and was found to have a pituitary macrotumor on magnetic resonance imaging (MRI). Cerebral spinal fluid hypocretin-1 levels were normal, indicating that tumor effect on the ventral lateral nucleus of the hypothalamus was not the cause of the dog's narcolepsy-cataplexy...
January 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28089836/delayed-csf-rhinorrhea-after-gamma-knife-radiosurgery-with-or-without-preceding-transsphenoidal-resection-for-pituitary-pathology
#7
Avital Perry, Christopher S Graffeo, William R Copeland, Kathryn M Van Abel, Matthew L Carlson, Bruce E Pollock, Michael J Link
BACKGROUND: Skull base cerebrospinal fluid (CSF) leak after gamma knife radiosurgery (GKRS) is a very rare complication. In patients who were treated with both GKRS and transsphenoidal resection (TSR) for pituitary lesions, early CSF leak occurs at a comparable rate to the general TSR population (4%). Delayed CSF leak occurring more than a year after TSR, GKRS, or dual therapy, is exceedingly rare. METHODS: Retrospective chart review and review of the literature RESULTS: We present two cases of delayed CSF leak following GKRS to treat pituitary adenoma...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28089822/micrornas-in-pituitary-tumors
#8
Anne Wierinckx, Magali Roche, Catherine Legras-Lachuer, Jacqueline Trouillas, Gérald Raverot, Joël Lachuer
Since the presence of microRNAs was first observed in normal pituitary, the majority of scientific publications addressing their role and the function of microRNAs in the pituitary have been based on pituitary tumor studies. In this review, we briefly describe the involvement of microRNAs in the synthesis of pituitary hormones and we present a comprehensive inventory of microRNA suppressors and inducers of pituitary tumors. Finally, we summarize the functional role of microRNAs in tumorigenesis, progression and aggressiveness of pituitary tumors, mechanisms contributing to the regulation (transcription factors, genomic modifications or epigenetic) or modulation (pharmacological treatment) of microRNAs in these tumors, and the interest of thoroughly studying the expression of miRNAs in body fluids...
January 12, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28079813/surgical-treatment-for-male-prolactinoma-a-retrospective-study-of-184-cases
#9
Yi-Jun Song, Mei-Ting Chen, Wei Lian, Bing Xing, Yong Yao, Ming Feng, Ren-Zhi Wang
A total of 184 cases of surgically treated male prolactinoma were analyzed retrospectively to summarize the outcome of this surgical intervention. We analyzed the general characteristics, clinical manifestations, hormone levels, imaging features, preoperative treatments, surgical outcomes, pathology results, and follow-up records for all included patients. The most common clinical manifestations included sexual dysfunction (47.4%), headache (55.9%), and visual disturbance (46.7%). Serum prolactin levels ranged from 150 to 204,952 ng/mL...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079577/transdifferentiation-of-neuroendocrine-cells-gangliocytoma-associated-with-two-pituitary-adenomas-of-different-lineage-in-men1
#10
Camille Sergeant, Christel Jublanc, Delphine Leclercq, Anne-Laure Boch, Franck Bielle, Gerald Raverot, Adrian F Daly, Jacqueline Trouillas, Chiara Villa
Gangliocytomas are rare and benign neuronal cell tumors, mostly found in the hypothalamic and sellar regions. Their histogenesis is still the subject of discussions. Herein we present a unique case of a pituitary gangliocytoma associated with a prolactinoma and a corticotroph adenoma in a patient affected by MEN1. The histologic study revealed shared features between adenomatous and neuronal cells, supporting the etiological hypothesis of a common origin or a phenomenon of transdifferentiation. Furthermore, gangliocytoma could be a new tumor related to MEN1...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28079576/mixed-gangliocytoma-pituitary-adenoma-insights-on-the-pathogenesis-of-a-rare-sellar-tumor
#11
M Beatriz S Lopes, Emily Sloan, Julie Polder
Gangliocytomas originating in the sellar region are rare; most are tumors composed of gangliocytic and pituitary adenomatous elements, forming the so-called mixed gangliocytoma-pituitary adenoma. The majority of mixed gangliocytoma adenomas are associated with endocrinopathies, mainly acromegaly and less often Cushing disease and hyperprolactinemia. In the present study, 10 cases of mixed gangliocytoma and somatotroph adenomas were evaluated for patterns of cellular differentiation and expression of lineage-specific transcription factors...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28079350/transcranial-approach-in-giant-pituitary-adenomas-results-and-outcome-in-a-modern-series
#12
Thomas Graillon, Frédéric Castinetti, Stéphane Fuentes, Regis Gras, Thierry Brue, Henry Dufour
BACKGROUND: Today, transcranial (TC) approach indications are particularly rare in pituitary adenomas (PA), representing 1.1% of all PA surgeries in our experience. In these rare and selected cases, the complications, advantages, and disadvantages of TC approach were also analyzed. METHODS: 19 cases of giant PA (≥40 mm) operated via TC approach alone or combined with transsphenoidal (TS) approach between 2000 and 2016 were selected. RESULTS: The most frequently observed symptom was visual disturbance...
January 12, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28078618/decreased-tap63-and-%C3%AE-np63-mrna-levels-in-most-human-pituitary-adenomas-are-correlated-with-notch3-jagged1-relative-expression
#13
Lisiane Cervieri Mezzomo, Frederico Giacomoni Pesce, Josenel Maria Barcelos Marçal, Taiana Haag, Nelson Pires Ferreira, Julia Fernanda Semmelmann Pereira Lima, Carolina Garcia Soares Leães, Miriam Costa Oliveira, Maria Beatriz da Fonte Kohek
Despite recent advances in molecular genetics, the pituitary adenoma initiation, development, progress, and the molecular basis of their unique features are still poorly understood. In this sense, it is proposed that stem cell could be involved in pituitary adenoma tumorigenesis. It is suggested that TP63 has important functions in stem cells, and it may have interplay of TP63 and Notch and its ligand Jagged in this process. This study aimed to evaluate the distinct expression of TP63 isoforms (TAp63 and ΔNp63), as well as its correlation with Notch3 receptor and its ligand Jagged1 in human pituitary adenomas at the messenger RNA (mRNA) level...
January 11, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28074324/how-to-deal-with-giant-pituitary-adenomas-transsphenoidal-or-transcranial-simultaneous-or-two-staged
#14
Sheng Han, Wei Gao, Zhitao Jing, Yunjie Wang, Anhua Wu
Giant pituitary adenomas (diameter >4 cm) are a challenge to treat, and there is no consensus on the optimal surgical strategy. We report here our experience in surgical management of these lesions. Adult patients with giant pituitary adenomas (n = 62; 54 non-functioning and eight hormone-secreting adenomas) who underwent surgical resection at our hospital from 2009 to 2015 were retrospectively reviewed. Surgical and clinical outcomes were analyzed. Single transsphenoidal and transcranial approaches were used in 43 (69...
January 11, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28073906/mri-follow-up-is-unnecessary-in-patients-with-macroprolactinomas-and-long-term-normal-prolactin-levels-on-dopamine-agonist-treatment
#15
Juliette Eroukhmanoff, Isabelle Tejedor, Iulia Potorac, Thomas Cuny, Jean Francois Bonneville, Henry Dufour, Georges Weryha, Albert Beckers, Philippe Touraine, Thierry Brue, Frédéric Castinetti
OBJECTIVE Both antitumor and antisecretory efficacies of dopamine agonists (DA) make them the first line treatment of macroprolactinomas. However, there is no guideline for MRI follow-up once prolactin is controlled. The aim of our study was to determine whether a regular MRI follow-up was necessary in patients with long-term normal prolactin levels under DA. PATIENTS AND METHODS We conducted a retrospective multicenter study (Marseille, Paris La Pitie Salpetriere and Nancy, France; Liege, Belgium) including patients with macroprolactinomas (largest diameter > 10 mm, baseline prolactin level > 100 ng/mL) treated by dopamine agonists, and regularly followed (pituitary MRI and prolactin levels) during at least 48 months once normal prolactin level was obtained...
January 10, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28072724/fatal-antiphospholipid-syndrome-following-endoscopic-transnasal-transsphenoidal-surgery-for-a-pituitary-tumor-a-case-report
#16
Chiao-Zhu Li, Chiao-Ching Li, Chih-Chuan Hsieh, Meng-Chi Lin, Dueng-Yuan Hueng, Feng-Chen Liu, Yuan-Hao Chen
INTRODUCTION: The fatal type of antiphospholipid syndrome is a rare but life-threating condition. It may be triggered by surgery or infection. Endoscopic transnasal-transsphenoidal surgery is a common procedure for pituitary tumor. We report a catastrophic case of a young woman died of fatal antiphospholipid syndrome following endoscopic transnasal-transsphenoidal surgery. METHODS AND RESULT: A 31-year-old woman of a history of stroke received endoscopic transnasal-transsphenoidal surgery for a pituitary tumor...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070930/pituitary-adenoma-with-adipose-tissue-a-new-metaplastic-variant
#17
Chiara Caporalini, Anna Maria Buccoliero, Luigi Pansini, Selene Moscardi, Luca Novelli, Gianna Baroni, Lorenzo Bordi, Franco Ammannati, Gian Luigi Taddei
Pituitary adenomas are benign tumors representing approximately 15-20% of intracranial neoplasms. There have been few reports of metaplastic osseous transformation and about 60 cases of neuronal metaplasia in pituitary adenoma but adipose metaplasia has not been previously described in the English literature. Here we report a case of pituitary adenoma with metaplastic adipose tissue in a 58-year-old male patient. Histologically this case fulfilled the criteria of a non-functioning pituitary adenoma, and moreover a central area of adipose tissue, made by mature adipocytes, and many tumor cells, containing fat droplet were evident...
January 9, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28070828/hypofractionated-stereotactic-radiosurgery-for-pituitary-metastases
#18
Haemin Chon, KyoungJun Yoon, Do Hoon Kwon, Chang Jin Kim, Min-Seon Kim, Young Hyun Cho
Pituitary metastases (PMs) are uncommon, representing only 1% of pituitary lesions. The diagnosis of PMs can be challenging and an optimal management remains to be determined. Here, we present a pilot clinical study on the efficacy and safety of hypofractionated stereotactic radiosurgery (SRS) with an optimized dosimetric plan in treating PMs. Between June 2013 and December 2014, seven consecutive patients (4 men and 3 women; median age 62 years) had been diagnosed with PMs based on their characteristic clinical and radiological features and subsequently treated using hypofractionated SRS...
January 9, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28070481/lung-adenocarcinoma-and-adrenocortical-carcinoma-in-a-patient-with-multiple-endocrine-neoplasia-type-1
#19
Nobumasa Ohara, Masanori Kaneko, Masahiro Ikeda, Fumio Ishizaki, Kazuya Suzuki, Ryo Maruyama, Takeshi Komeyama, Kazuhiro Sato, Kenichi Togashi, Hiroyuki Usuda, Yuto Yamazaki, Hironobu Sasano, Kenzo Kaneko, Kyuzi Kamoi
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disorder caused by heterozygous germline mutations in the tumor suppressor gene MEN1, which encodes a nuclear protein, menin. MEN1 is characterized by the combined occurrence of tumors involving the pituitary gland, pancreatic islets, and parathyroid glands. Additionally, patients with MEN1 often exhibit adrenal tumors. Although most MEN1-associated tumors are benign, malignant lesions arising in these endocrine organs have been reported. Additionally, malignant diseases of non-endocrine organs concomitant with MEN1 have also been reported...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28070054/-van-wyk-grumbach-syndrome-a-case-report-and-%C3%A2-literature-review
#20
Ping Jin, Qin Zhang, Zhaohui Mo, Fan Yang, Yanhong Xie
Van Wyk-Grumbach syndrome (VWGS) is a rare complication of prolonged untreated juvenile hypothyroidism characterized by precocious puberty and enlarged multicystic ovaries. A 13-year-old girl visited our outpatient clinic due to menstrual irregularities. She had precocious puberty, pituitary hyperplasia and multiple cystic ovaries in addition to clinical signs of severe congenital hypothyroidism. After the initiation of L-thyroxine therapy, the symptoms were alleviated in a short time. This rare syndrome is easy to be misdiagnosed as pituitary and ovarian tumor...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
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