This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'The best prognosis in carcinoma stomach is with \nSelect and explain. \nA. Superficial spreading type, B. Ulcerative type, C. Linitis plastica type, D. Polypoidal type', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ca stomach may be divided into 5 morphological subtypes, that correlates loosely with the natural history and outcome.\n\nUlcerating Ca\nPolypoidal Ca\nSuperficial spreading Ca\n\n\nalso known as early gastric cancer, superficial ca is confined to mucosa and submucosa.\nthese cancers have excellent prognosis (-90% 5 year survival rate) after resection\n\nLinitis plastica or Scirrhous Ca\n\nthese tumors infiltrate the entire thickness of the stomach and cover a very large surface area, commonly involve the entire stomach. Marked desmoplastic reaction is noted, the stomach loses its pliability.\nit has the worst prognosis of all types as spread is early.\n\nAdvanced carcinoma\n\nthis largest category contains the big tumors that are found partly within and partly outside the stomach. They may originally have qualified for inclusion in one of the preceding groups but have outgrown that early stage.', 'role': 'assistant'}]