George Kontogeorgos

Summary

Affiliation: University of Athens
Country: Greece

Publications

  1. ncbi request reprint Predictive markers of pituitary adenoma behavior
    George Kontogeorgos
    Department of Pathology and Pituitary Tumor Reference Center, G Gennimatas General Hospital of Athens, Athens, Greece
    Neuroendocrinology 83:179-88. 2006
  2. pmc Highly aggressive pathology of non-functional parathyroid carcinoma
    Doina Piciu
    Department of Nuclear Medicine and Endocrine Tumours, Ion ChiricuŢă Institute of Oncology, 34 36, Republicii St, 400015, Cluj Napoca, Romania
    Orphanet J Rare Dis 8:115. 2013
  3. pmc Uneventful octreotide LAR therapy throughout three pregnancies, with favorable delivery and anthropometric measures for each newborn: a case report
    Deeb Daoud Naccache
    Institute of Endocrinology, Diabetes and Metabolism, Rambam Health Campus and Rappaport Faculty of Medicine, Technion, Haifa, Israel
    J Med Case Reports 5:386. 2011
  4. ncbi request reprint Morphologic changes of prolactin-producing pituitary adenomas after short treatment with dopamine agonists
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, KOFKA Bldg, 1st Floor, 154 Messogion Avenue, 115 27, Athens, Greece
    Acta Neuropathol 111:46-52. 2006
  5. ncbi request reprint Molecular cytogenetics of pituitary adenomas, assessed by FISH technique
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, Athens, Greece
    Front Horm Res 32:205-16. 2004
  6. ncbi request reprint Ganglion cell containing pituitary adenomas: signs of neuronal differentiation in adenoma cells
    George Kontogeorgos
    Department of Pathology, 1st Floor KOFKA Bldg, 154 Messogion Ave, 115 27, Athens, Greece
    Acta Neuropathol 112:21-8. 2006
  7. ncbi request reprint Classification and pathology of pituitary tumors
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, Athens, Hellas
    Endocrine 28:27-35. 2005
  8. ncbi request reprint Morphology, molecular regulation and significance of apoptosis in pituitary adenomas
    Nikiforos Kapranos
    Department of Molecular Pathology, Mitera Maternity and Surgical Center, G Gennimatas General Hospital of Athens, Greece
    Front Horm Res 32:217-34. 2004
  9. ncbi request reprint Case report: Primary pituitary non-Hodgkin's lymphoma developed following surgery and radiation of a pituitary macroadenoma
    Labrini Papanastasiou
    Department of Endocrinology and Diabetes Center, G Genimatas General Hospital, Athens, Greece
    Hormones (Athens) 11:488-94. 2012
  10. doi request reprint Intra-sellar schwannoma co-existing with GH-secreting pituitary adenoma
    Maria Koutourousiou
    Department of Neurosurgery, G Gennimatas Athens General Hospital, Greece
    Acta Neurochir (Wien) 151:1693-7. 2009

Collaborators

Detail Information

Publications29

  1. ncbi request reprint Predictive markers of pituitary adenoma behavior
    George Kontogeorgos
    Department of Pathology and Pituitary Tumor Reference Center, G Gennimatas General Hospital of Athens, Athens, Greece
    Neuroendocrinology 83:179-88. 2006
    ..Finally, in the near future, immunohistochemistry for somatostatin receptors will be a very important application...
  2. pmc Highly aggressive pathology of non-functional parathyroid carcinoma
    Doina Piciu
    Department of Nuclear Medicine and Endocrine Tumours, Ion ChiricuŢă Institute of Oncology, 34 36, Republicii St, 400015, Cluj Napoca, Romania
    Orphanet J Rare Dis 8:115. 2013
    ..Considering these facts, every single case presented is a step forward in defying the clinical presentation, for the awareness of the clinicians, and also in establishing standard adjuvant therapies. ..
  3. pmc Uneventful octreotide LAR therapy throughout three pregnancies, with favorable delivery and anthropometric measures for each newborn: a case report
    Deeb Daoud Naccache
    Institute of Endocrinology, Diabetes and Metabolism, Rambam Health Campus and Rappaport Faculty of Medicine, Technion, Haifa, Israel
    J Med Case Reports 5:386. 2011
    ..abstract:..
  4. ncbi request reprint Morphologic changes of prolactin-producing pituitary adenomas after short treatment with dopamine agonists
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, KOFKA Bldg, 1st Floor, 154 Messogion Avenue, 115 27, Athens, Greece
    Acta Neuropathol 111:46-52. 2006
    ..These novel findings represent characteristic features of short-term dopamine agonist treatment, which are not seen in long-term treatment...
  5. ncbi request reprint Molecular cytogenetics of pituitary adenomas, assessed by FISH technique
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, Athens, Greece
    Front Horm Res 32:205-16. 2004
    ..This review presents the principles and applications of FISH technique for the investigation of the cytogenetic background of pituitary adenomas...
  6. ncbi request reprint Ganglion cell containing pituitary adenomas: signs of neuronal differentiation in adenoma cells
    George Kontogeorgos
    Department of Pathology, 1st Floor KOFKA Bldg, 154 Messogion Ave, 115 27, Athens, Greece
    Acta Neuropathol 112:21-8. 2006
    ..The presence of NFP in pituitary adenomas indicates neuronal differentiation in adenoma cells, suggesting a common origin for neuronal and pituitary adenoma cell elements in gangliocytomas...
  7. ncbi request reprint Classification and pathology of pituitary tumors
    George Kontogeorgos
    Department of Pathology, G Gennimatas Athens General Hospital, Athens, Hellas
    Endocrine 28:27-35. 2005
    ..Morphologic separation of adenoma from carcinoma is not feasible. The term pituitary carcinoma should be exclusively applied when cerebrospinal and/or systemic metastases are definite...
  8. ncbi request reprint Morphology, molecular regulation and significance of apoptosis in pituitary adenomas
    Nikiforos Kapranos
    Department of Molecular Pathology, Mitera Maternity and Surgical Center, G Gennimatas General Hospital of Athens, Greece
    Front Horm Res 32:217-34. 2004
    ..This review presents the principles of apoptosis and summarizes the morphologic and functional changes of apoptosis in pituitary...
  9. ncbi request reprint Case report: Primary pituitary non-Hodgkin's lymphoma developed following surgery and radiation of a pituitary macroadenoma
    Labrini Papanastasiou
    Department of Endocrinology and Diabetes Center, G Genimatas General Hospital, Athens, Greece
    Hormones (Athens) 11:488-94. 2012
    ....
  10. doi request reprint Intra-sellar schwannoma co-existing with GH-secreting pituitary adenoma
    Maria Koutourousiou
    Department of Neurosurgery, G Gennimatas Athens General Hospital, Greece
    Acta Neurochir (Wien) 151:1693-7. 2009
    ..We present a unique example of an intra-sellar schwannoma co-existing with a growth hormone (GH)-secreting pituitary adenoma...
  11. ncbi request reprint Pituitary corticotroph adenoma containing many apoptotic cells: a histologic, immunohistochemical, ultrastructural and molecular study
    Irene Messini
    Department of Pathology, G Gennimatas, Athens General Hospital, Greece
    Ultrastruct Pathol 26:27-32. 2002
    ....
  12. ncbi request reprint Prolactin-producing pituitary adenoma with incomplete neuronal transformation: an intermediate adenoma-neuronal tumor
    Eleni Thodou
    Departments of Pathology, 1G Gennimatas General Hospital of Athens, KOFKA Building, 1st Floor, 154 Messogion Ave, 115 27, Athens, Greece
    Acta Neuropathol 108:115-20. 2004
    ..Our case is the first PRL-producing pituitary adenoma showing incomplete neuronal differentiation lacking mature ganglion cells...
  13. doi request reprint Non-adenomatous sellar lesions: experience of a single centre and review of the literature
    Maria Koutourousiou
    Department of Neurosurgery, G Gennimatas, Athens General Hospital, Athens, Greece
    Neurosurg Rev 33:465-76. 2010
    ..Pituitary surgeons should be aware of their existence to reconstruct treatment strategy, proceeding to adjuvant therapy when necessary...
  14. ncbi request reprint Growth factors and cytokines in paragangliomas and pheochromocytomas, with special reference to sustentacular cells
    George Kontogeorgos
    Department of Laboratory Medicine and Pathology, St Michael s Hospital, University of Toronto, Toronto, Ontario, Canada
    Endocr Pathol 13:197-206. 2002
    ..The significance of these observations regarding paracrine activities of chief and sustentacular cells remains to be determined...
  15. doi request reprint EZH2 is regulated by ERK/AKT and targets integrin alpha2 gene to control Epithelial-Mesenchymal Transition and anoikis in colon cancer cells
    Angelo Ferraro
    Laboratory of Signal Mediated Gene Expression, Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, 11635, Greece
    Int J Biochem Cell Biol 45:243-54. 2013
    ..Our results show how deregulation of epigenetic factors and mechanisms can affect cancer cell aggressiveness and propose EZH2 as a potential metastasis marker and/or therapeutic target for colorectal cancer treatment...
  16. pmc Collision sellar lesions: experience with eight cases and review of the literature
    Maria Koutourousiou
    Department of Neurosurgery, G Gennimatas Athens General Hospital, 154 Messogion Ave, 115 27, Athens, Greece
    Pituitary 13:8-17. 2010
    ..Suggested hypotheses about a common embryonic origin or a potential interaction between pituitary adenomas and the immune system are presented...
  17. ncbi request reprint Galectin-3 as a marker distinguishing functioning from silent corticotroph adenomas
    Eleni Thodou
    Department of Pathology and Pituitary Tumor Reference Center, G Gennimatas Athens General Hospital, Athens, Greece
    Hormones (Athens) 6:227-32. 2007
    ..The aim of this study was to disclose differences in the expression of Gal-3 in silent and functioning corticotroph pituitary adenomas...
  18. ncbi request reprint Thyrotoxic periodic paralysis as the first manifestation of a thyrotropin-secreting pituitary adenoma
    Theodora Pappa
    Department of Endocrinology and Diabetes Center, Athens General Hospital G Gennimatas, Athens, Greece
    Hormones (Athens) 9:82-6. 2010
    ..Despite its rarity, TSH-secreting pituitary adenoma should be included in the differential diagnosis of TPP...
  19. ncbi request reprint Carcinoid syndrome and carcinoid crisis secondary to a metastatic carcinoid tumour of the lung: a therapeutic challenge
    Dimitrios Papadogias
    Department of Endocrinology and Diabetes, IASO Hospital, Athens, Greece
    Eur J Gastroenterol Hepatol 19:1154-9. 2007
    ....
  20. ncbi request reprint Immunohistochemical localization of interleukin-6 in peripheral human endocrine glands
    George Kontogeorgos
    Department of Pathology, G Genimatas Athens General Hospital, Greece
    Endocrine 17:135-40. 2002
    ..In conclusion, IL-6 immunoreactivity is present in almost all the human endocrine glands and it expressed in a cell-specific manner. These observations provide further support for the existence of local immune-endocrine interactions...
  21. ncbi request reprint Correlation of bcl-2 and bax with apoptosis in human pituitary adenomas
    Demetrios Sambaziotis
    Department of Pathology G Gennimatas General Hospital, Athens, Greece
    Pituitary 6:127-33. 2003
    ..05), as compared with functioning adenomas and macroadenomas respectively. In conclusion, our findings suggest that bcl-2 and bax molecules play a role in the regulation of apoptotic mechanisms in pituitary adenomas...
  22. doi request reprint Somatostatin and dopamine receptor profile of gastroenteropancreatic neuroendocrine tumors: an immunohistochemical study
    Evanthia Diakatou
    Department of Pathology, G Gennimatas Athens General Hospital, 154 Mesogeion Avenue, 115 27 Athens, Greece
    Endocr Pathol 22:24-30. 2011
    ..The co-expression of sstrs and D2R in a significant number of the studied cases offers a potential therapeutic alternative for GEP-NETs...
  23. doi request reprint TRAIL receptor upregulation and the implication of KRAS/BRAF mutations in human colon cancer tumors
    Eftychia Oikonomou
    Laboratory of Signal Mediated Gene Expression, Institute of Biological Research and Biotechnology, National Hellenic Research Foundation, Athens, Greece
    Int J Cancer 125:2127-35. 2009
    ..Furthermore, oncogenic mutations may directly or indirectly enhance DR expression, potentially sensitizing these tumors to TRAIL-based therapies...
  24. ncbi request reprint Preoperative imaging and localization of small sized insulinoma with EUS-guided fine needle tattoing: a case report
    George N Zografos
    Third Department of Surgery, Athens General Hospital, Athens, 115 27, Greece
    Hormones (Athens) 4:111-6. 2005
    ..Histology confirmed the presence of an endocrine tumour staining for chromogranin A and insulin. The patient had an uneventful postoperative recovery and has developed no further episodes of hypoglycemia 3 years after surgery...
  25. ncbi request reprint Lymphocytic hypophysitis: late recurrence following successful transsphenoidal surgery
    Stylianos Tsagarakis
    Department of Endocrinology, Diabetes and Metabolism Evangelismos Hospital, and 2nd Department of Radiology, University of Athens, Athens, Greece
    Endocrine 25:85-90. 2004
    ....
  26. ncbi request reprint Innovations and controversies in the WHO classification of pituitary adenomas
    George Kontogeorgos
    Acta Neuropathol 111:73-5. 2006
  27. ncbi request reprint Tumors metastatic to the pituitary gland: case report and literature review
    John Komninos
    Department of Endocrinology, Diabetes and Metabolism, Evangelismos General Hospital, 10676 Athens, Greece
    J Clin Endocrinol Metab 89:574-80. 2004
    ..The relevant literature is reviewed in light of this unusual case, illustrating the problems in the diagnosis and management of patients with metastasis to the pituitary...
  28. ncbi request reprint Clinical review: Diagnosis and management of pituitary carcinomas
    Gregory A Kaltsas
    Department of Endocrinology, St Bartholomew s Hospital, London ECIA 7BE, United Kingdom
    J Clin Endocrinol Metab 90:3089-99. 2005
    ..However, we do not believe there will be any real prospect of long-term survival until the development and use of therapies targeted at specific molecular abnormalities...
  29. ncbi request reprint Familial bilateral acinic cell carcinoma of the parotid synchronous with pituitary adenoma: case report
    Alexander Delides
    Department of Otolaryngology, Athens Medical Center, Distomou 5 7, Marousi, 151 25 Athens, Greece
    Head Neck 27:825-8. 2005
    ..Acinic cell carcinoma is a common neoplasm of the salivary glands that occurs predominately in the parotid. Only one case of a familial recurrence of such a neoplasm and 16 cases of bilateral tumors have been reported...