Gastric cytology.
D003581:Cytodiagnosis; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005751:Gastric Lavage; D006801:Humans; D011859:Radiography; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging