title: Massive thymoma of the mid-posterior mediastinum: an unprecedented case in a young adult.
abstract: We report an unprecedented case of ectopic thymoma in a young adult. A 33-year-old male presented with a 10-day history of non-productive cough and fever. Investigation revealed mediastinal widening without pulmonary involvement. Computed tomography showed a large mass-14.8 × 10.8 × 8.4 cm-in the mid-posterior mediastinum, and a biopsy obtained by video-assisted thoracoscopy indicated that the mass was a tumor. Immunohistochemistry showed combined thymoma type AB1. Because of the considerable proportions of the tumor and its close proximity to major structures, the patient was treated with chemotherapy.
authors.affiliation: MD, Resident in Dermatology at the Hospital Universitário de Brasília (HUB), Brasília, DF, Brazil.
authors.forename: Karen Fernandes
authors.initials: KF
authors.lastname: de Oliveira
authors.affiliation: Fellow in Oncological Radiology at the Instituto do Câncer do Estado de São Paulo Octavio Frias de Oliveira (Icesp), São Paulo, SP, Brazil.
authors.forename: Marcio Maciel
authors.initials: MM
authors.lastname: Rodrigues
authors.affiliation: Head of the Department of Radiology and Diagnostic Imaging at the Universidade Federal do Triângulo Mineiro (UFTM), Uberaba, MG, Brazil.
authors.forename: Gesner Pereira
authors.initials: GP
authors.lastname: Lopes
authors.affiliation: MD, Resident in Clinical Medicine at the Universidade Federal de Uberlândia (UFU), Uberlândia, MG, Brazil.
authors.forename: Renan Sandoval
authors.initials: RS
authors.lastname: de Almeida
authors.affiliation: MD, Resident in Plastic Surgery at the Hospital Heliópolis, São Paulo, SP, Brazil.
authors.forename: Juliana Lopes
authors.initials: JL
authors.lastname: Lusvarghi
authors.affiliation: Thoracic Surgeon at the Hospital de Clínicas da Universidade Federal do Triângulo Mineiro (UFTM), Uberaba, MG, Brazil.
authors.forename: João Paulo Vieira
authors.initials: JP
authors.lastname: Dos Santos
keywords: Ectopic tumor; Middle mediastinum; Posterior mediastinum; Thymoma