Why can't laryngeal cancer be operated on in late stage

Hypopharyngeal cancer is a malignant tumor, the treatment effect is relatively poor, especially advanced tumors, is not operable. Which cases belong to particularly advanced, the first case, such as the tumor is huge, the large blood vessels in the neck are wrapped by the tumor, in this case the operation is not done. In the second case, if the tumor invades the bone, invades the vertebral body, then it is impossible to cut it completely, invades the large blood vessels, that is to say, distant metastasis has occurred, and it belongs to a very advanced tumor, then it is of little significance for this tumor to be cut locally. Therefore, doctors cannot solve these distant spread metastases by using this local method of scalpel incision. Therefore, in this case, it is necessary to treat them with systemic drugs such as chemotherapy drugs.