Arnault Tauziede-Espariat

Learn More
Chordomas are slow-growing malignant neoplasms. Determination of histopathologic prognostic factors using a large cohort study has been limited by their low incidence. In this retrospective study, we investigated the clinical, histopathologic, and immunohistochemical prognostic factors in 287 chordomas from 111 patients assessed by central pathologic(More)
Ganglioglioma (GG) is a grade I tumor characterized by alterations in the MAPK pathway, including BRAF V600E mutation. Recently, diffuse midline glioma with an H3 K27M mutation was added to the WHO 2016 classification as a new grade IV entity. As co-occurrence of H3 K27M and BRAF V600E mutations has been reported in midline tumors and anaplastic GG, we(More)
INTRODUCTION Papillary Glioneuronal Tumor (PGNT) is a grade I tumor which was classified as a separate entity in the World Health Organization Classification of the Central Nervous System 2007 in the group of mixed glioneuronal tumors. This tumor is rare and subclassifying PGNT represents a challenge. Recently, a fusion between SLC44A1 and PRKCA which(More)
The demand for expertise in pathology for the diagnosis of infectious diseases (ID) is continually growing, due to an increase in ID in immunocompromised patients and in the (re)-emergence of common and uncommon diseases, including tropical infections and infections with newly identified microbes. The microbiology laboratory plays a crucial role in(More)
Rosette-forming glioneuronal tumors (RGNTs) that do not involve the fourth ventricle are rare. RGNTs were originally thought to be exclusively localized into the fourth ventricle but were found in various anatomical localizations. We review the literature and found 32 cases of this particular RGNT. The outcome was excellent with no mortality reported after(More)
AIMS Hypophysitis is a rare chronic inflammation of the pituitary gland corresponding currently to six histopathological subtypes. Among them, immunoglobulin- G4-related hypophysitis was recently added in this classification. The aim of this study was to perform a retrospective histopathological and immunohistochemical analysis to evaluate the prevalence of(More)
AIMS Rosai-Dorfman disease is a rare entity that has been described as lymphadenopathy in young patients. Extranodal forms of this disease have been previously observed. The etiology of Rosai-Dorfman disease remains unknown, relationships with the IgG4-related sclerotic disease have been detected. Herein, a rare case of Rosai-Dorfman disease with meningeal(More)
PURPOSE Choristoma is a congenital tumor made up of ectopic normal tissue. Different histopathologic subtypes have been described. Among them, lacrimal gland choristoma is found mainly in infants and can affect the iris, the ciliary body, or the choroid and epibulbar region. Our aims were to report a case of lacrimal gland choristoma, review the published(More)
We report the case of an 11-year-old girl, who was admitted for surgery of an epilepsy-associated brain tumor. The radiological and clinical hypothesis was dysembryoplasic neuroepithelial tumor. Histopathological examination revealed a tumoral proliferation composed of spindle-shaped cells with palisade arrangements around vessels. Tumor cells have small,(More)