25 June 2003
Demonstration of monoclonality in coexisting GH-producing adenoma and neuronal tissue
Hidetoshi Ikeda, Wenbin Ma, Takashi YoshimotoMed Sci Monit 2003; 9(6): CS47-52 :: ID: 12838
Abstract
Background:Pituitary adenoma and neuronal components may coexist in the sellar region, but discussion of the histogenesis of the neuronal component has been mainly based on the morphological similarity with the adenomatous component using immunohistochemical and ultrastructural methods. Neuronal differentiation within pituitary adenoma may be a metaplastic process, but no clear supporting evidence has been obtained. To investigate the monoclonality or polyclonality of the mixed lesion by the X-chromosome inactivation method.Case Report:Tumor specimens from a 55-year-old acromegalic woman were subjected to histopathological study and clonal analysis. Histological examination found varying proportions of adenoma cells and neuronal component in the specimens. Light and electron microscopy revealed cells with transitional morphology between adenoma cells and neurons. However, the X-chromosome inactivation method demonstrated monoclonality of both adenoma and neuron-like cells.Conclusions:Clonal analysis of the mixed lesion demonstrated that all tumor cells originated from a single cell.
Keywords: Adenoma - genetics, Adenoma - pathology, Adenoma - secretion, Chromosomes, Human, X - genetics, Human Growth Hormone - secretion, Pituitary Neoplasms - genetics, Pituitary Neoplasms - pathology, Pituitary Neoplasms - secretion
Editorial
01 April 2024 : Editorial
Editorial: Forty Years of Waiting for Prevention and Cure of HIV Infection – Ongoing Challenges and Hopes for Vaccine Development and Overcoming Antiretroviral Drug ResistanceDOI: 10.12659/MSM.944600
Med Sci Monit 2024; 30:e944600
In Press
05 Mar 2024 : Clinical Research
Role of Critical Shoulder Angle in Degenerative Type Rotator Cuff Tears: A Turkish Cohort StudyMed Sci Monit In Press; DOI: 10.12659/MSM.943703
06 Mar 2024 : Clinical Research
Comparison of Outcomes between Single-Level and Double-Level Corpectomy in Thoracolumbar Reconstruction: A ...Med Sci Monit In Press; DOI: 10.12659/MSM.943797
21 Mar 2024 : Meta-Analysis
Economic Evaluation of COVID-19 Screening Tests and Surveillance Strategies in Low-Income, Middle-Income, a...Med Sci Monit In Press; DOI: 10.12659/MSM.943863
10 Apr 2024 : Clinical Research
Predicting Acute Cardiovascular Complications in COVID-19: Insights from a Specialized Cardiac Referral Dep...Med Sci Monit In Press; DOI: 10.12659/MSM.942612
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952