title: Endoscopic biopsy diagnosis of oat cell carcinoma of the lung penetrating the esophagus.
mesh_terms: D001706:Biopsy / Q000379:methods; D018288:Carcinoma, Small Cell / Q000175:diagnosis* / Q000473:pathology; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000473:pathology / Q000556:secondary*; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged