Use of direct vision biopsy in the diagnosis of gastroesophageal malignancy.
D001706:Biopsy; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000175:diagnosis*; D004945:Esophagoscopy; D005773:Gastroscopy; D006801:Humans; D008722:Methods; D013274:Stomach Neoplasms / Q000175:diagnosis*