China's NPC is a high incidence of malignant tumors of the top ten. Generally speaking cancer cure is surgical resection, and nasopharyngeal carcinoma with the exception of radiation therapy is preferred.
There are three reasons:
(1) special anatomical location. NPC in the position of concealment, Chui only 5.5-6.0 cm in diameter, the shape of a small matchbox, the rectangular cavity. For its posterior cervical spine, the top wall for the base of the skull, a broken-sublingual, glossopharyngeal, vagus, nerve and important arteriovenous access Lu Qiang, which also invasive intracranial nasopharyngeal carcinoma, both sides wall artery, vein and lymphatic organizations. By the great vessels, enveloping the tiny cranial nerve tumor is difficult to radical surgery, not damage it more difficult for these important structures, "The Anatomy of the restrictions, nasopharyngeal cancer surgery non-ideal approach" concluded that the There are objective basis.
(2) to the rapid development of surgical lesions difficulties and limitations. Tumor expand upward into the middle cranial fossa, many cranial nerve damage to the deep cervical lymph node metastasis, its transfer rate is as high as 60 percent to 80 percent, at the same time intracranial and cervical metastasis, but also to the distant liver and metastasis. Nasopharyngeal carcinoma is more vicious high degree of poorly differentiated or undifferentiated carcinoma, the early diagnosis was only 4% -7%, in the treatment of advanced patients.
(3) radiotherapy good effect. Its five-year survival rate up to 49.5%, radiotherapy may be the original structure, less trauma, the depth of X-ray and cobalt 60, the accelerator has become the principal means of treatment.
Of course, there are individual cases of the use of surgical resection, tumor limitations such as no signs of metastasis, or residual tumor after radiotherapy were.
There are three reasons:
(1) special anatomical location. NPC in the position of concealment, Chui only 5.5-6.0 cm in diameter, the shape of a small matchbox, the rectangular cavity. For its posterior cervical spine, the top wall for the base of the skull, a broken-sublingual, glossopharyngeal, vagus, nerve and important arteriovenous access Lu Qiang, which also invasive intracranial nasopharyngeal carcinoma, both sides wall artery, vein and lymphatic organizations. By the great vessels, enveloping the tiny cranial nerve tumor is difficult to radical surgery, not damage it more difficult for these important structures, "The Anatomy of the restrictions, nasopharyngeal cancer surgery non-ideal approach" concluded that the There are objective basis.
(2) to the rapid development of surgical lesions difficulties and limitations. Tumor expand upward into the middle cranial fossa, many cranial nerve damage to the deep cervical lymph node metastasis, its transfer rate is as high as 60 percent to 80 percent, at the same time intracranial and cervical metastasis, but also to the distant liver and metastasis. Nasopharyngeal carcinoma is more vicious high degree of poorly differentiated or undifferentiated carcinoma, the early diagnosis was only 4% -7%, in the treatment of advanced patients.
(3) radiotherapy good effect. Its five-year survival rate up to 49.5%, radiotherapy may be the original structure, less trauma, the depth of X-ray and cobalt 60, the accelerator has become the principal means of treatment.
Of course, there are individual cases of the use of surgical resection, tumor limitations such as no signs of metastasis, or residual tumor after radiotherapy were.
