An unusual case of a T4N2CMx polymorphous low grade adenocarcinoma located in the nasal fossae and extending to the pterygoid area is presented. The primary tumor was excised through a Lefort I maxillotomy and the neck was managed with a supraomohyoid neck dissection. Adjuntive postoperative radiotherapy was also administered to the patient.
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J Oral Maxillofac Pathol
October 2024
Department of Oral and Maxillofacial Surgery, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, India.
Polymorphous adenocarcinoma (PAC) is a low-grade malignant tumour of minor salivary glands of the oral cavity, which rarely presents with invasive features. Low metastatic and excellent survival rates are some of its favorable features. A 36-year-old woman reported with swelling, pain, and mobility of teeth in the left upper inner cheek region.
View Article and Find Full Text PDFFront Neurol
November 2024
Division of Neurology, McMaster University, Hamilton, ON, Canada.
Polymorphous low-grade neuroepithelial tumor of the young (PLNTY) is a rare central nervous system (CNS) pathology predominantly observed in the pediatric population. Ependymomas also exhibit a peak incidence in early childhood, with rare presentations after early adulthood. In this report, we describe a rare case of a 41-year-old man diagnosed sequentially with a polymorphous low-grade neuroepithelial tumor of the young, followed by a supratentorial ependymoma within a year.
View Article and Find Full Text PDFNeuropathol Appl Neurobiol
December 2024
Neuroradiological RENOCLIP-LOC network: A. Bani-Sadr (Lyon), J.M. Constans (Amiens), D. Galanaud (Paris), R. Guillevin (Poitiers), N. Menjot (Montpellier), S. Grand (Grenoble), F.D. Ardelier (Strasbourg), E. Schmitt (Nancy), B. Testud (Marseille), L. Mondot (Nice).
Aims: FGFR-fused central nervous system (CNS) tumours are rare and are usually within the glioneuronal and neuronal tumours or the paediatric-type diffuse low-grade glioma spectrum. Among this spectrum, FGFR2 fusion has been documented in tumours classified by DNA-methylation profiling as polymorphous low-grade neuroepithelial tumours of the young (PLNTY), a recently described tumour type. However, FGFR2 fusions have also been reported in glioneuronal tumours, highlighting the overlapping diagnostic criteria and challenges.
View Article and Find Full Text PDFZhonghua Bing Li Xue Za Zhi
October 2024
Department of Oral Pathology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai 200011, China.
To investigate the clinicopathological, immunohistochemical, and molecular genetic characteristics of microsecretory adenocarcinoma (MSA) of the salivary gland, and to improve the understanding of this rare tumor. Cases originally diagnosed as MSA at the Department of Oral Pathology, the Ninth People's Hospital of Shanghai Jiao Tong University School of Medicine were retrospectively collected. The cases of polymorphous adenocarcinoma and adenocarcinoma, not otherwise specified from January 2000 to January 2020 were reviewed to identify potential misdiagnosed MSA cases.
View Article and Find Full Text PDFBrain Tumor Pathol
October 2024
Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India.
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