Stents relieve jaundice but do nothing to treat the disease. Treatment for tumours require either surgical excision or in case of some other tumours, radiotherapy or chemotherapy when it is sensitive to it. For gall bladder cancers surgery is the only known effective treatment. However this tumour has recurred and once this has happened it is usually not possible to remove these tumours because the tumour invades major blood vessels of the liver or intestine. To be able to assess whether it is resectable one should do a CT angiogram of the liver (triple phase study). There is some evidence of benefit with local radiotherapy but generally none of these therapies are effective.