Cancer of the cervix
The uterus is an organ of the genital tract of women. It is composed of two parts: the body and neck.
It is within the body of the uterus as the fetus develops after fertilization of an ovum by a spermatozoon
Cervix The cervix is the lower part of the body, it connects the body of the uterus with the vagina and the outside. It comes in the form of a thick-walled cylinder whose lumen is virtual in normal times.
* Part of the cervix is exposed to the vagina is called the ectocervix. The doctor can see through the use of a speculum inserted into the vagina and he dismisses the walls.
* The inner lining of the cervix is called the endocervix, it is hardly visible.
* At the time rules, it lets the menstrual blood flowing to the vagina and the outside;
* After intercourse, the cervix left back in seminal fluid containing sperm into the body of the uterus (and then to the fallopian tubes and ovaries may fertilize an egg).
If the semen is contaminated with germs, they can infect the female genitalia, vagina into the Fallopian tubes through the cervix;
* At the end of pregnancy the cervix is changing, and when the moment of childbirth, it disappears completely to let the baby and allow the birth.
Cancer of the cervix is the development of malignancy within its tissues.
It is a cancer involving a sexually transmitted virus: HPV (Human Papilloma Virus) a particular type “says high risk” (or oncogene).
Human papillomaviruses (HPV) are DNA viruses, small size, which specifically infect the skin and mucous membranes. Some types, called “non-oncogenic, induce benign lesions such as warts, papillomas or warts, while types called” oncogenes “are responsible for cervical cancer.
70% of HPV infections are transient, the virus is eliminated naturally by the immune system in about a year (1). But cancer can develop if the infection becomes persistent (2). The HPV virus is found in 99.7% of cancers of the cervix (3), which is why HPV infection is considered as the necessary cause of cervical cancer.
Tags: Cancer of the cervix, ectocervix, Human papillomavirus (HPV), ovum, spermatozoon
