title: [Q & A. Esophageal ulcer that presented diagnostic difficulty and progressed rapidly].
authors.forename: Kinji
authors.initials: K
authors.lastname: Kamiya
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Konno
mesh_terms: D018450:Disease Progression; D004938:Esophageal Neoplasms / Q000473:pathology*; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D014456:Ulcer / Q000473:pathology*