title: Cancer of the gastrointestinal tract. Cytology in early diagnosis.
mesh_terms: D001706:Biopsy; D002278:Carcinoma in Situ / Q000175:diagnosis* / Q000473:pathology; D003581:Cytodiagnosis; D003584:Cytological Techniques; D005751:Gastric Lavage; D005753:Gastric Mucosa / Q000473:pathology; D005773:Gastroscopy; D006801:Humans; D007813:Laparotomy; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000473:pathology; D013997:Time Factors