血尿 因泌尿系统疾患引起的血尿,如尿路感染、急性肾炎、肾结核、肾结石及肿瘤等。如果出现无痛性、间歇性血尿,则往往是泌尿系统恶性肿瘤的一种症象,尤其是老年人伴有排尿不畅、尿滴沥不尽及原因不明的膀胱刺激症状时,应警惕膀胱癌或前列腺癌等,必须及早就诊查治。 血便 临床上以肛裂、痔疮、肠道感染及大肠(结肠、直肠)癌早期表现较为多见,有关专家研究发现,在10例肠粘膜层癌症患者中就有7例会发生粘液血便,特别是老年人患肠癌时,常为无痛性血便,更需高度警惕,应尽早请专科医生作直肠指诊、内窥镜等项检查,以免贻误诊治时机。 血痰 痰中混有鲜血,在排除呼吸道炎症、肺部急性感染、肺结核、尘肺、心血管疾患及出血性疾病外,应想到肺癌。据观察,肺癌病人中约有半数左右发生反 Hematuria Hematuria caused by urinary disorders, such as urinary tract infections, acute nephritis, renal tuberculosis, kidney stones, and tumors. If there is painless, intermittent hematuria, it is often a symptom of urinary system malignancy, especially when the elderly are accompanied by poor bladder urination, urinary leakage and unexplained bladder irritation, should be alert to bladder cancer Or prostate cancer, etc., must be treated as soon as possible. Clinical manifestations of anal fissures, acne, intestinal infections, and large intestine (colon and rectum) cancers are more common in blood stools. Experts have found that 7 out of 10 patients with intestinal mucosal cancer may develop mucous bloody stools, especially When elderly people suffer from colon cancer, they often have painless bloody stools, and they need to be highly vigilant. Specialist doctors should be consulted as soon as possible for rectal examination, endoscopy, etc. to avoid delays in diagnosis and treatment. Blood diarrhea Blood stains are mixed with blood. Excluding respiratory inflammation, acute pulmonary infections, tuberculosis, pneumoconiosis, cardiovascular diseases, and bleeding disorders, lung cancer should be thought of. It has been observed that about half of the lung cancer patients have developed anti