Cancers cause symptoms depending on their location, size, and spread. General symptoms include unexplained weight loss and loss of appetite. Postmenopausal bleeding can be a symptom of uterine or cervical cancers. Intestinal bleeding (visible or occult) can be the first symptom of gastrointestinal cancers. Persistent cough and haemoptysis (coughing out blood) are common symptoms of cancers in the lungs. Progressively increasing headache may be the first symptom of cancers in the brain.