نتایج جستجو برای: nonfunctional pituitary adenomas

تعداد نتایج: 54148  

Journal: :Endocrinology and metabolism clinics of North America 2015
Paula Bruna Araujo Leonardo Vieira Neto Mônica R Gadelha

The improved management of pituitary adenomas has led to an increasing number of pregnancies in patients harboring pituitary adenomas. Therefore, adequate management of pregnant women with pituitary adenomas is of growing importance. Because pregnancy produces several physiologic changes to the endocrine system, especially to the pituitary gland, endocrinologists must be knowledgeable and skill...

Journal: :Turk patoloji dergisi 2015
Karen Gomez-Hernandez Shereen Ezzat Sylvia L Asa Özgür Mete

Pituitary adenomas comprise a heterogenous group of adenohypophyseal tumours with distinct clinicopathological features across both the clinically functioning and silent groups. Although, predicting a clinically aggressive course remains challenging, accurate subtyping of pituitary adenomas offers valuable prognostic information that together with other clinical and radiological information ser...

Journal: :Journal of Neurology, Neurosurgery & Psychiatry 1997

Journal: :مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 0
سیدعلی فخر طباطبائی sa fakhr tabatabai هوشنگ صابری h saberi

to improve visual disturbance, optic nerve decompression can be performed via transcranial or tran-sphenoidal approaches. although the surgical exposure in transcranial approach is favourable, yet the optic nerve's presence in the field may make it vulnerable to damage. of fighty patients with different types of pituitary adenomas, 35 cases with medium-sized (1-3 cm) tumors have been studi...

Journal: :Journal of cellular physiology 2007
Arianna Bottoni Maria Chiara Zatelli Manuela Ferracin Federico Tagliati Daniela Piccin Cristina Vignali George A Calin Massimo Negrini Carlo M Croce Ettore C Degli Uberti

MicroRNAs (miRNAs) are small non-coding RNAs that control gene expression by targeting mRNA. It has been demonstrated that miRNA expression is altered in many human cancers, suggesting that they may play a role in human neoplasia. To determine whether miRNA expression is altered in pituitary adenomas, we analyzed the entire miRNAome in 32 pituitary adenomas and in 6 normal pituitary samples by ...

Journal: :Endocrine-related cancer 2007
A Raitila M Georgitsi A Karhu K Tuppurainen M J Mäkinen K Birkenkamp-Demtröder K Salmenkivi T F Orntoft J Arola V Launonen P Vahteristo L A Aaltonen

Germline mutations in the aryl hydrocarbon receptor interacting protein (AIP) gene were recently observed in patients with pituitary adenoma predisposition (PAP). Though AIP mutation-positive individuals with prolactin-, mixed growth hormone/prolactin-, and ACTH-producing pituitary adenomas as well as non-secreting pituitary adenomas have been reported, most mutation-positive patients have had ...

Journal: :Endokrynologia Polska 2010
Marek Pawlikowski Jolanta Kunert-Radek Maciej Radek

INTRODUCTION Plurihormonality of pituitary adenomas can be defined as the ability of an adenoma to express more than one pituitary hormone. The application of immunohistochemistry to diagnose surgically removed pituitary tumours revealed that a great number of pituitary adenomas are in fact plurihormonal. However, data on the incidence and the clinical relevance of the pituitary adenoma pluriho...

2012
Subramanian Kannan Susan M. Staugaitis Robert J. Weil Betul Hatipoglu

Pituitary adenomas can express and secrete different hormones. Expression of pituitary hormones in nonneoplastic pituitary cells is regulated by different transcription factors. Some pituitary adenomas show plurihormonal expression. The most commonly reported plurihormonal adenomas are composed of somatotrophs, lactotrophs, thyrotrophs and gonadotrophs. Pituitary adenomas composed of both corti...

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