Cervical cancer overview: Difference between revisions
No edit summary |
No edit summary |
||
| Line 6: | Line 6: | ||
'''Cervical cancer''' is a [[malignant]] [[cancer]] of the [[cervix]]. It may present with [[vaginal bleeding]] but symptoms may be absent until the cancer is in its advanced stages, which has made cervical cancer the focus of intense screening efforts using the [[Pap smear]]. In developed countries, the widespread use of cervical screening programs has reduced the incidence of invasive cervical cancer by 50% or more. Most scientific studies have found that [[human papillomavirus]] (HPV) infection is responsible for virtually all cases of cervical cancer.<ref>[http://www3.interscience.wiley.com/cgi-bin/abstract/68500199/ABSTRACT?CRETRY=1&SRETRY=0]</ref><ref>[http://www.jci.org/cgi/content/abstract/116/5/1167]</ref> | '''Cervical cancer''' is a [[malignant]] [[cancer]] of the [[cervix]]. It may present with [[vaginal bleeding]] but symptoms may be absent until the cancer is in its advanced stages, which has made cervical cancer the focus of intense screening efforts using the [[Pap smear]]. In developed countries, the widespread use of cervical screening programs has reduced the incidence of invasive cervical cancer by 50% or more. Most scientific studies have found that [[human papillomavirus]] (HPV) infection is responsible for virtually all cases of cervical cancer.<ref>[http://www3.interscience.wiley.com/cgi-bin/abstract/68500199/ABSTRACT?CRETRY=1&SRETRY=0]</ref><ref>[http://www.jci.org/cgi/content/abstract/116/5/1167]</ref> | ||
Treatment consists of [[surgery]] (including ''local excision'') in early stages and [[chemotherapy]] and [[radiotherapy]] in advanced stages of the disease. An effective [[HPV vaccine]] against the two most common cancer-causing strains of HPV has recently been licensed in the U.S. (see [[#Vaccination|''Vaccine'' section]], below). These two HPV strains together are responsible for approximately 70%<ref>[http://www.fda.gov/bbs/topics/NEWS/2006/NEW01385.html]</ref><ref>[http://www.jci.org/cgi/content/abstract/116/5/1167]</ref> of all cervical cancers. Experts recommend that women combine the benefits of both programs by seeking regular Pap smear screening, even after vaccination. | Treatment consists of [[surgery]] (including ''local excision'') in early stages and [[chemotherapy]] and [[radiotherapy]] in advanced stages of the disease. An effective [[HPV vaccine]] against the two most common cancer-causing strains of HPV has recently been licensed in the U.S. (see [[#Vaccination|''Vaccine'' section]], below). These two HPV strains together are responsible for approximately 70%<ref>[http://www.fda.gov/bbs/topics/NEWS/2006/NEW01385.html]</ref><ref>[http://www.jci.org/cgi/content/abstract/116/5/1167]</ref> of all cervical cancers. Experts recommend that women combine the benefits of both programs by seeking regular Pap smear screening, even after vaccination. | ||
==Historical Perspective== | |||
Epidemiological record in the 20th century helped establish information on cervical cancer demographics and expand an understanding for specific at-risk populations. | |||
==Epidemiology and Demographics== | |||
Cervical cancer is one of the most common and fatal forms of cancer worldwide. | |||
==Risk Factors== | |||
Cervical cancer is associated with a range of risk factors including, genetic, environmental and infection-based exposures. | |||
==Natural History, Complications and Prognosis== | |||
Prognosis depends on the stage of the cancer. With treatment, 80 to 90% of women with stage I cancer and 50 to 65% of those with stage II cancer are alive 5 years after diagnosis. Only 25 to 35% of women with stage III cancer and 15% or fewer of those with stage IV cancer are alive after 5 years. | |||
==Diagnosis== | |||
===Staging=== | |||
Cervical cancer is staged by the [[International Federation of Gynecology and Obstetrics]] (FIGO) staging system, which is based on clinical examination, rather than surgical findings. It allows only the following diagnostic tests to be used in determining the stage: palpation, inspection, [[colposcopy]], endocervical[[curettage]], [[hysteroscopy]], [[cystoscopy]], [[proctoscopy]], intravenous [[urography]], and [[X-ray]] examination of the lungs and skeleton, and cervical[[conization]]. | |||
===History and Symptoms=== | |||
Cervical cancer may be entirely asymptomatic at first, later manifesting in a range of symptoms such as loss of appetite, fatigue, and edema. | |||
===Other Diagnostic Studies=== | |||
Cervical biopsy is the confirmatory test for the diagnosis of cervical cancer or pre-cancer. | |||
==Treatment== | |||
===Primary Prevention=== | |||
Prevention of cervical cancer includes a comprehensive approach involving awareness, screening, and usage of preventative vaccinations. | |||
==References== | ==References== | ||
Revision as of 20:36, 9 April 2013
|
Cervical cancer Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Cervical cancer overview On the Web |
|
American Roentgen Ray Society Images of Cervical cancer overview |
|
Risk calculators and risk factors for Cervical cancer overview |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [5]
Overview
Cervical cancer is a malignant cancer of the cervix. It may present with vaginal bleeding but symptoms may be absent until the cancer is in its advanced stages, which has made cervical cancer the focus of intense screening efforts using the Pap smear. In developed countries, the widespread use of cervical screening programs has reduced the incidence of invasive cervical cancer by 50% or more. Most scientific studies have found that human papillomavirus (HPV) infection is responsible for virtually all cases of cervical cancer.[1][2] Treatment consists of surgery (including local excision) in early stages and chemotherapy and radiotherapy in advanced stages of the disease. An effective HPV vaccine against the two most common cancer-causing strains of HPV has recently been licensed in the U.S. (see Vaccine section, below). These two HPV strains together are responsible for approximately 70%[3][4] of all cervical cancers. Experts recommend that women combine the benefits of both programs by seeking regular Pap smear screening, even after vaccination.
Historical Perspective
Epidemiological record in the 20th century helped establish information on cervical cancer demographics and expand an understanding for specific at-risk populations.
Epidemiology and Demographics
Cervical cancer is one of the most common and fatal forms of cancer worldwide.
Risk Factors
Cervical cancer is associated with a range of risk factors including, genetic, environmental and infection-based exposures.
Natural History, Complications and Prognosis
Prognosis depends on the stage of the cancer. With treatment, 80 to 90% of women with stage I cancer and 50 to 65% of those with stage II cancer are alive 5 years after diagnosis. Only 25 to 35% of women with stage III cancer and 15% or fewer of those with stage IV cancer are alive after 5 years.
Diagnosis
Staging
Cervical cancer is staged by the International Federation of Gynecology and Obstetrics (FIGO) staging system, which is based on clinical examination, rather than surgical findings. It allows only the following diagnostic tests to be used in determining the stage: palpation, inspection, colposcopy, endocervicalcurettage, hysteroscopy, cystoscopy, proctoscopy, intravenous urography, and X-ray examination of the lungs and skeleton, and cervicalconization.
History and Symptoms
Cervical cancer may be entirely asymptomatic at first, later manifesting in a range of symptoms such as loss of appetite, fatigue, and edema.
Other Diagnostic Studies
Cervical biopsy is the confirmatory test for the diagnosis of cervical cancer or pre-cancer.
Treatment
Primary Prevention
Prevention of cervical cancer includes a comprehensive approach involving awareness, screening, and usage of preventative vaccinations.