title: Intrathoracic ancient neurilemoma mimicking mesenchymal thoracic tumor.
abstract: Ancient neurilemoma is a rare variant of neurilemoma and can grow into a large tumor, which results in several symptoms. It is often misdiagnosed to be malignant neoplasm because of its histological features of nuclear atypia. The authors reported an 87-year-old woman presenting with progressive dyspnea and chronic cough for more than 1 year. Computed tomography of the chest showed a huge heterogeneous, paravertebral mass with focal calcification, arising from intervertebral foramen. The tumor was successfully resected by thoracotomy and pathology disclosed ancient neurilemoma.
authors.affiliation: Division of Cardiology (Y-HC, H-RC), Departments of Internal Medicine and Pathology (Y-HH), Buddhist Tzu Chi General Hospital, Hualien, Taiwan; and Institute of Medical Sciences (H-RC) and School of Medicine (Y-HH), Tzu Chi University, Hualien, Taiwan.
authors.forename: Yu-Hung
authors.initials: YH
authors.lastname: Chen
authors.forename: Yung-Hsiang
authors.initials: YH
authors.lastname: Hsu
authors.forename: Huai-Ren
authors.initials: HR
authors.lastname: Chang
mesh_terms: D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008637:Mesenchymoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013899:Thoracic Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013908:Thoracotomy; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome