Oral cancer natural history, complications and prognosis: Difference between revisions
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*Whether the patient has a history of smoking for more than ten pack years. | *Whether the patient has a history of smoking for more than ten pack years. | ||
Early detection is important. The 5-year survival rate for oral cancer diagnosed early is 75% compared to 20% for oral cancer diagnosed late.<ref>{{Cite web | title = NIH oral cancer fact sheet| url =http://report.nih.gov/nihfactsheets/ViewFactSheet.aspx?csid=106 }}</ref>Approximately half of people with oral cancer will live more than 5 years after they are diagnosed and treated. If the cancer is found early, before it has spread to other tissues, the cure rate is nearly 90%. More than half of oral cancers have spread when the cancer is detected. Most have spread to the throat or neck.<ref>{{Cite web | title = National Library of Medicine prognosis of oral cancer| url =https://www.nlm.nih.gov/medlineplus/ency/article/001035.htm }}</ref> | Early detection is important. The 5-year survival rate for oral cancer diagnosed early is 75% compared to 20% for oral cancer diagnosed late.<ref>{{Cite web | title = NIH oral cancer fact sheet| url =http://report.nih.gov/nihfactsheets/ViewFactSheet.aspx?csid=106 }}</ref>Approximately half of people with oral cancer will live more than 5 years after they are diagnosed and treated. If the cancer is found early, before it has spread to other tissues, the cure rate is nearly 90%. More than half of oral cancers have spread when the cancer is detected. Most have spread to the throat or neck.<ref>{{Cite web | title = National Library of Medicine prognosis of oral cancer| url =https://www.nlm.nih.gov/medlineplus/ency/article/001035.htm }}</ref>With early detection and timely treatment, deaths from oral cancer could be dramatically reduced. | ||
The 5-year survival rate for those with localized disease at diagnosis is 83 percent compared with only 32 percent for those whose cancer has spread to other parts of the body. Early detection of oral cancer is often possible. Tissue changes in the mouth that might signal the beginnings of cancer often can be seen and felt easily. | |||
Prognosis depends on stage and overall health. Grading of the invasive front of the tumor is a very important prognostic parameter.The rate of curability of cancers of the lip and oral cavity varies depending on the stage and specific site. Most patients present with early cancers of the lip, which are highly curable by surgery or by radiation therapy with cure rates of 90% to 100%. Small cancers of the retromolar trigone, hard palate, and upper gingiva are highly curable by either radiation therapy or surgery with survival rates of as much as 100%. Local control rates of as much as 90% can be achieved with either radiation therapy or surgery in small cancers of the anterior tongue, the floor of the mouth, and buccal mucosa. | Prognosis depends on stage and overall health. Grading of the invasive front of the tumor is a very important prognostic parameter.The rate of curability of cancers of the lip and oral cavity varies depending on the stage and specific site. Most patients present with early cancers of the lip, which are highly curable by surgery or by radiation therapy with cure rates of 90% to 100%. Small cancers of the retromolar trigone, hard palate, and upper gingiva are highly curable by either radiation therapy or surgery with survival rates of as much as 100%. Local control rates of as much as 90% can be achieved with either radiation therapy or surgery in small cancers of the anterior tongue, the floor of the mouth, and buccal mucosa. | ||
Revision as of 22:55, 8 September 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]
Overview
Natural History
Complications
Prognosis
The prognosis (chance of recovery) depends on the following:
- The stage of the cancer.
- The number and size of lymph nodes with cancer.
- Whether the patient has HPV infection of the oropharynx.
- Whether the patient has a history of smoking for more than ten pack years.
Early detection is important. The 5-year survival rate for oral cancer diagnosed early is 75% compared to 20% for oral cancer diagnosed late.[1]Approximately half of people with oral cancer will live more than 5 years after they are diagnosed and treated. If the cancer is found early, before it has spread to other tissues, the cure rate is nearly 90%. More than half of oral cancers have spread when the cancer is detected. Most have spread to the throat or neck.[2]With early detection and timely treatment, deaths from oral cancer could be dramatically reduced. The 5-year survival rate for those with localized disease at diagnosis is 83 percent compared with only 32 percent for those whose cancer has spread to other parts of the body. Early detection of oral cancer is often possible. Tissue changes in the mouth that might signal the beginnings of cancer often can be seen and felt easily. Prognosis depends on stage and overall health. Grading of the invasive front of the tumor is a very important prognostic parameter.The rate of curability of cancers of the lip and oral cavity varies depending on the stage and specific site. Most patients present with early cancers of the lip, which are highly curable by surgery or by radiation therapy with cure rates of 90% to 100%. Small cancers of the retromolar trigone, hard palate, and upper gingiva are highly curable by either radiation therapy or surgery with survival rates of as much as 100%. Local control rates of as much as 90% can be achieved with either radiation therapy or surgery in small cancers of the anterior tongue, the floor of the mouth, and buccal mucosa.
Moderately advanced and advanced cancers of the lip also can be controlled effectively by surgery or radiation therapy or a combination of these. The choice of treatment is generally dictated by the anticipated functional and cosmetic results of the treatment. Moderately advanced lesions of the retromolar trigone without evidence of spread to cervical lymph nodes are usually curable and have shown local control rates of as much as 90%; such lesions of the hard palate, upper gingiva, and buccal mucosa have a local control rate of as much as 80%. In the absence of clinical evidence of spread to cervical lymph nodes, moderately advanced lesions of the floor of the mouth and anterior tongue are generally curable with survival rates of as much as 70% and 65%, respectively.
Patients with head and neck cancers have an increased chance of developing a second primary tumor of the upper aerodigestive tract. A study has shown that daily treatment of these patients with moderate doses of isotretinoin (13-cis-retinoic acid) for 1 year can significantly reduce the incidence of second tumors. No survival advantage has yet been demonstrated, however, in part due to recurrence and death from the primary malignancy. An additional trial has shown no benefit of retinyl palmitate or retinyl palmitate plus beta-carotene when compared to retinoic acid alone.[3]