What Are the Different Types of Cervical Cancer?

Reviewed on 12/14/2021
Cervical cancer types include squamous cell carcinoma, adenocarcinoma, and other (melanoma, sarcoma, lymphoma).
Cervical cancer types include squamous cell carcinoma, adenocarcinoma, and other (melanoma, sarcoma, lymphoma).

Cervical cancer is cancer that begins when cells lining the cervix, the lower part of the uterus (womb), become abnormal and grow out of control.

5 Types of Cervical Cancer

The main types of cervical cancers are: 

  • Squamous cell carcinoma 
    • Up to 90% of cervical cancers are squamous cell carcinomas
    • These cancers develop from cells in the exocervix, which is the outer part of the cervix that can be seen by a doctor during a speculum exam
    • Squamous cell carcinomas usually originate in the transformation zone, where the exocervix joins the endocervix (the opening of the cervix that leads into the uterus)
  • Adenocarcinoma
    • Most of the rest of cervical cancers are adenocarcinomas that develop from the mucus-producing gland cells of the endocervix, called adenosquamous carcinomas or mixed carcinomas
  • Other types of cervical cancer
    • Nearly all cervical cancers are either squamous cell carcinomas or adenocarcinomas, but other types of cancer can sometimes develop in the cervix, such as:

What Are Signs & Symptoms of Cervical Cancer?

Cervical cancer usually does not have any symptoms in early stages. Symptoms of cervical cancer often do not start until the cancer grows and spreads (metastasizes) into nearby tissue.

12 Symptoms of Cervical Cancer

When symptoms of cervical cancer occur, they may include: 

Symptoms of advanced cervical cancer may include:

What Causes Cervical Cancer?

The cause of cervical cancer is not always known though it may be due to genetic changes (mutations). 

Certain types of human papillomavirus (HPV) infection are the biggest risk factor for cervical cancer. 

In addition to HPV infection, risk factors for developing cervical cancer include: 

  • Sexual history
    • Having many sexual partners
    • Having a partner who is considered high risk (someone with HPV infection or who has many sexual partners)
    • Becoming sexually active before 18 years old
  • Chlamydia infection 
  • A weakened immune system
  • Smoking
  • A family history of cervical cancer 
  • Long-term use of oral contraceptives (birth control pills)
  • Age younger than 20 years at first full-term pregnancy 
  • Having multiple (three or more) full-term pregnancies 
  • A diet low in fruits and vegetables 
  • Economic status
    • Low-income women may not have easy access to some health care services, including cervical cancer screening with Pap tests and HPV tests, which means they may not get screened or treated for cervical pre-cancers
  • Diethylstilbestrol (DES) 

How Is Cervical Cancer Diagnosed?

Cervical cancer is diagnosed with regular screenings. 

  • A Pap smear (Pap test) is a test that collects cells from the cervix to check for abnormal cervical cells that can lead to cervical cancer
    • Pap tests are also used to find abnormal cervical cells before they become cancer (precancers)
  • The HPV test is usually used in two situations:
    • The primary HPV test is preferred for cervical cancer screening in women age 25-65 years 
    • Some HPV tests are part of a co-test, when the HPV test and the Pap test are done at the same time to screen for cervical cancer

Is Cervical Cancer Treatable?

Treatments for cervical cancer may include one or more of the following:

  • Surgery 
    • For pre-cancer: 
      • Ablation to destroy cervical tissue with cold temperatures (cryosurgery) or a laser 
      • Excisional surgery (conization) to cut out and remove the pre-cancer
    • For invasive cervical cancer:
      • Hysterectomy (simple or radical) to remove the cervix and uterus
      • Trachelectomy to remove the cervix and the upper part of the vagina but not the body of the uterus for women who want maintain the ability to have children 
    • Lymph node removal
  • Radiation therapy 
    • External beam radiation
    • Brachytherapy (internal radiation therapy)
  • Chemotherapy (“chemo”)
  • Chemoradiation, which is chemotherapy given along with radiation to help it work better
    • Cisplatin given weekly during radiation (carboplatin may be used instead) 
    • Cisplatin plus 5-fluorouracil (5-FU) given every 3 weeks during radiation
  • Targeted therapy 
    • Vascular endothelial growth factor (VEGF): bevacizumab (Avastin)
  • Immunotherapy 
    • Immune checkpoint inhibitors: pembrolizumab (Keytruda)
Reviewed on 12/14/2021
References
Image Source: iStock Images

https://www.cancer.org/cancer/cervical-cancer.html

https://www.cancerresearchuk.org/about-cancer/cervical-cancer/stages-types-grades/stage-1