1临床资料患者,男,45岁,因大便习惯改变1月入院,患者近1月出现大便次数增多,1～2次/d,大便稀烂,未见粘液、脓血,无腹痛、腹胀,无发热、乏力、消瘦。入院查体:无贫血貌,浅表淋巴结无肿大,腹软,无压痛,未触及包块。肝脾未触及。血常规、肝功能、肾功能正常。腹部B超、胸片未见异 1 clinical data, male, 45 years old, due to changes in bowel habits January admission, the patient appeared in January increased stool frequency, 1 or 2 times / d, stool pulpy, no mucus, pus and blood, no abdominal pain, bloating, no Fever, fatigue, weight loss. Admission examination: no anemia appearance, superficial lymph nodes without swelling, abdominal soft, no tenderness, no palpable mass. Liver and spleen not touched. Blood, liver, kidney function is normal. Abdomen B ultrasound, chest X-ray no different