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). Nevertheless, several alterations in cell growth can lead to pituitary hyperplasia and high levels of hormone production, frequently related to adenoma formation ( Asa & Ezzat 2009 ). Pituitary adenomas represent 25% of intracranial tumors, with their
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Introduction Pituitary tumors are invariably benign neoplasms identified in ∼25% of unselected autopsy specimens, and may cause considerable morbidity due to excess hormone secretion and/or compression of surrounding brain structures ( Melmed 2003
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Introduction Pituitary adenomas are indolent tumors, which account for 10–15% of all diagnosed intracranial neoplasms ( Asa & Ezzat 2002 , DeLellis et al. 2004 ). Small adenomas may occur in up to 15% of pituitary glands examined
Endocrinology Department, ‘C.I. Parhon’ National Institute of Endocrinology, Bucharest, Romania
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Pathology Department, Reference Center for Rare Pituitary Diseases HYPO, ‘Groupement Hospitalier Est’ Hospices Civils de Lyon, Bron, France
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Neurosurgery Department, Reference Center for Rare Pituitary Diseases HYPO, ‘Groupement Hospitalier Est’ Hospices Civils de Lyon, Bron, France
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Endocrinology Department, Reference Center for Rare Pituitary Diseases HYPO, ‘Groupement Hospitalier Est’ Hospices Civils de Lyon, Bron, France
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Introduction Anterior pituitary tumors are usually benign neoplasms that derive from the endocrine cells of the anterior pituitary gland. However, a small percentage of them have an aggressive behavior, showing resistance and/or multiple
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Department of Imaging and Pathology, UZ Leuven (University Hospitals Leuven), Leuven, Belgium
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Department of Anatomy and Structural Science, Yamagata University Faculty of Medicine, Yamagata, Japan
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prevalent, being detected in 15–25% of the general population, with serious clinical symptoms in 0.1% ( Ezzat et al. 2004 , Daly et al. 2009 , Mete & Lopes 2017 , Melmed 2020 ). Although pituitary tumors mainly represent benign and slow
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Department of Development and Regeneration, Department of Hand Surgery, Zhejiang Provincial Key Laboratory of Ophthalmology, Eye Center of the 2nd Affiliated Hospital, Department of Imaging and Pathology, CITNOBA (National Research Council of Argentina), Laboratory of Pituitary Regulation, Unit Head and Neck Oncology, Research Group Experimental Oto‐Rhino‐Laryngology, Unit Clinical and Experimental Endocrinology, Research Group Experimental Neurosurgery and Neuroanatomy, Cluster Stem Cell Biology and Embryology, Research Unit of Stem Cell Research, KU Leuven (University of Leuven), Campus Gasthuisberg O&N4, Herestraat 49, B-3000 Leuven, Belgium
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Department of Development and Regeneration, Department of Hand Surgery, Zhejiang Provincial Key Laboratory of Ophthalmology, Eye Center of the 2nd Affiliated Hospital, Department of Imaging and Pathology, CITNOBA (National Research Council of Argentina), Laboratory of Pituitary Regulation, Unit Head and Neck Oncology, Research Group Experimental Oto‐Rhino‐Laryngology, Unit Clinical and Experimental Endocrinology, Research Group Experimental Neurosurgery and Neuroanatomy, Cluster Stem Cell Biology and Embryology, Research Unit of Stem Cell Research, KU Leuven (University of Leuven), Campus Gasthuisberg O&N4, Herestraat 49, B-3000 Leuven, Belgium
Department of Development and Regeneration, Department of Hand Surgery, Zhejiang Provincial Key Laboratory of Ophthalmology, Eye Center of the 2nd Affiliated Hospital, Department of Imaging and Pathology, CITNOBA (National Research Council of Argentina), Laboratory of Pituitary Regulation, Unit Head and Neck Oncology, Research Group Experimental Oto‐Rhino‐Laryngology, Unit Clinical and Experimental Endocrinology, Research Group Experimental Neurosurgery and Neuroanatomy, Cluster Stem Cell Biology and Embryology, Research Unit of Stem Cell Research, KU Leuven (University of Leuven), Campus Gasthuisberg O&N4, Herestraat 49, B-3000 Leuven, Belgium
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Introduction Pituitary tumors are generally benign adenomas. Radiology and autopsy, being performed for reasons other than pituitary-related medical ones, show a high prevalence of 10–15% in the overall population, although most of these lesions are
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Since the early work of Minkowski, who attributed acromegaly to a pituitary tumor ( Minkowski 1887 ), neoplasms composed of pituitary adenohypophysial cells have been recognized as the cause of significant illness. However, Harvey Cushing
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PhD Program in Endocrinological Sciences, Sapienza University of Rome, Rome, Italy
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Introduction Pituitary tumors, accounting for 16.2% of all primary brain and other central nervous system tumors ( Ostrom et al. 2017 ), are classified based on their secretory activity in non-functioning pituitary tumors (NFPTs) or hormone
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et al . 2002 , Byun et al . 2003 , Samuels et al . 2004 , Wu et al . 2005 , Kozaki et al . 2006 ). Pituitary tumors are common endocrine neoplastic diseases. Multiple tumor-promoting factors or signaling pathways are known to be involved
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Introduction Pituitary tumor transforming gene (PTTG1), the index mammalian securin, was isolated from rat pituitary tumor cells ( Pei & Melmed 1997 ), and the human homolog (hPTTG1) was identified as a proto-oncogene ( Zhang et al . 1999 b