title: Pathologic quiz case: an unusual cause of external dyspnea.
authors.affiliation: Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: P A
authors.initials: PA
authors.lastname: Isotalo
authors.forename: F M
authors.initials: FM
authors.lastname: Shamji
authors.forename: C J
authors.initials: CJ
authors.lastname: Dennie
authors.forename: M M
authors.initials: MM
authors.lastname: Guindi
mesh_terms: D001706:Biopsy; D002467:Cell Nucleus / Q000473:pathology; D003593:Cytoplasm / Q000473:pathology; D004417:Dyspnea / Q000209:etiology*; D004938:Esophageal Neoplasms / Q000150:complications* / Q000473:pathology* / Q000601:surgery; D016629:Esophagectomy; D004945:Esophagoscopy; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007890:Leiomyosarcoma / Q000150:complications* / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D005082:Physical Exertion; D014057:Tomography, X-Ray Computed