title: Low-grade adenocarcinoma of endolymphatic sac mimicking jugular paraganglioma at clinical and neuroradiological examination.
abstract: We report a case of low-grade adenocarcinoma of endolymphatic sac origin mimicking jugular paraganglioma at clinical and neuroradiological examination. The lesion occurred in a 72-year-old male who presented with a long-standing history of right-sided hearing loss and a few-week history of progressive facial nerve palsy and right aural pain. At histology, the tumor was composed of pseudoglandular spaces with papillary infoldings. Lumina contained colloid-like material. The lesion was surgically removed with suboccipital approach following endoarterial embolization. This study emphasizes that low-grade adenocarcinomas of endolymphatic sac origin extending to posterior cranial fossa and jugular paraganglioma may be indistinguishable preoperatively at clinical and radiological levels.
authors.affiliation: Department of Clinical Radiology and Anatomic Pathology, Section of Anatomic Pathology Marcello Malpighi, University of Bologna, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Roncaroli
authors.forename: F
authors.initials: F
authors.lastname: Giangaspero
authors.forename: S
authors.initials: S
authors.lastname: Piana
authors.forename: A
authors.initials: A
authors.lastname: Andreoli
authors.forename: R
authors.initials: R
authors.lastname: Ricci
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D001932:Brain Neoplasms / Q000473:pathology*; D002533:Cerebral Angiography; D003388:Cranial Fossa, Posterior / Q000473:pathology; D003937:Diagnosis, Differential; D004428:Ear Neoplasms / Q000473:pathology*; D004712:Endolymphatic Sac / Q000473:pathology*; D006801:Humans; D007601:Jugular Veins / Q000473:pathology; D008297:Male; D010235:Paraganglioma / Q000473:pathology*; D014057:Tomography, X-Ray Computed