title: [NECESSARY GASTRIC TESTS IN SURGERY].
mesh_terms: D003937:Diagnosis, Differential; D005745:Gastric Acidity Determination; D005773:Gastroscopy; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D010437:Peptic Ulcer; D011859:Radiography; D013274:Stomach Neoplasms; D013514:Surgical Procedures, Operative
keywords: DIAGNOSIS, DIFFERENTIAL; GASTRIC ACIDITY DETERMINATION; GASTROSCOPY; NEOPLASM DIAGNOSIS; PEPTIC ULCER; RADIOGRAPHY; STOMACH NEOPLASMS; SURGERY, OPERATIVE