title: 81-year-old man with pain and swelling in the right side of the chest.
authors.affiliation: Servicio de Medicina Interna, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España.
authors.forename: C
authors.initials: C
authors.lastname: Josa-Laorden
authors.affiliation: Servicio de Medicina Interna, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España. Electronic address: jorgerubiogracia@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Rubio-Gracia
authors.affiliation: Servicio de Anatomía Patológica, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España.
authors.forename: C B
authors.initials: CB
authors.lastname: Marta-Casanova
authors.affiliation: Servicio de Anatomía Patológica, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España.
authors.forename: P
authors.initials: P
authors.lastname: Sota-Ochoa