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Cervical cancer
Precursors of cervical cancer
The occurrence and development of the cervix is a process from quantitative to qualitative change, evolving gradually to a sudden shift over a long period. The precursor might be the heterotypic zone of the cervix, which is a common site for abnormalities. During the formation of this heterotypic zone, cervical epithelial metaplasia is relatively active, and, compounded by infection with the human papillomavirus and further stimulated by external carcinogens, immature or proliferative squamous epithelial cells may exhibit gradual changes or atypical hyperplasia, potentially leading to sarcomatoid changes in the cervical epithelium. This might be a precursor sign.
What is cervical cancer?
Cervical erosion is one of the most common malignant gynecological tumors, belonging to a type of cervical cancer. Cervical cancer itself is a significant branch within this category, and both the incidence and mortality rates of cervical cancer are relatively high in our country. However, recent advances in medical science have led to a noticeable decline. Cervical cancer is associated with HPV (Human Papillomavirus) infection, as well as with early childbirth, multiple pregnancies, and smoking. The definitive diagnosis of cervical cancer relies on the examination of cervical and endocervical canal live tissues, colposcopic biopsy, or cervical scrape cytology. Typically, after CT, MRI, or other imaging studies, a mass may be detected. Possible symptoms of cervical cancer include vaginal bleeding and vaginal discharge.
Is cervical polyp cervical cancer?
Cervical polyps are not cervical cancer. Most cervical polyps are caused by chronic inflammation of the cervix, whereas cervical cancer is caused by human papillomavirus (HPV) infection. After removing a cervical polyp and conducting a pathological examination, if it is benign, it is considered cured. However, cervical cancer is a malignant tumor that requires surgery. If high-risk factors are present after surgery, radiotherapy and chemotherapy are necessary. Therefore, these two diseases are different and vary in severity.
Characteristics of Bleeding in Cervical Cancer
The bleeding characteristics of cervical cancer should be considered based on the pathological type and stage of the disease. In the early stages, the bleeding may be contact-related, occurring after sexual intercourse or a gynecological examination, and may involve a small amount of fresh, light bleeding. As the disease progresses into the later stages, the tumor may cause irregular vaginal bleeding. The amount of this irregular bleeding varies, depending on the size of the lesion and the involvement of the blood vessels in the interstitial tissues. A larger lesion may naturally result in more bleeding. In advanced stages, major blood vessels may be affected, potentially leading to severe bleeding. Therefore, the characteristics of vaginal bleeding should be analyzed based on the specific circumstances. If the cancer is exophytic, bleeding tends to occur earlier and is usually more copious, whereas if it is endophytic, bleeding tends to occur later.
Cervical polyp and cervical cancer differences
Cervical polyps are generally visible to the naked eye during a gynecological examination, and after the removal of cervical polyps, there should be no bleeding. Cervical cancer, on the other hand, is different. With cervical cancer, abnormalities can be seen on the surface of the cervix or, even if not visible to the naked eye, can generally be detected through cervical cancer screening. There is no issue with patients with cervical polyps undergoing cervical cancer screening. For patients with cervical cancer, cervical cancer screening typically includes TCT and HPV testing. If these tests show abnormalities, indicating cervical cancer or precancerous lesions, a biopsy is generally required for further diagnosis. There is a difference between the two; after a polyp is removed, there should be no further bleeding; whereas with cervical cancer, continuous bleeding, irregular bleeding, and an accompanying odor can occur.
Cervical cancer leukorrhea characteristics
The characteristics of vaginal discharge in cervical cancer may include the presence of blood in the discharge. This is because cervical cancer often leads to increased vaginal discharge, which may also increase in quantity and might contain streaks of blood or bloody material. The discharge could be thin and watery or resemble rice wash water, and it might have a foul smell. In advanced stages, due to necrosis of the cancer tissue accompanied by infection, there can be a substantial amount of foul-smelling, purulent discharge resembling rice wash water. Therefore, these characteristics of the vaginal discharge are specific symptoms of cervical cancer. If such symptoms occur, it is crucial to seek medical consultation promptly to evaluate for cervical cancer.
Cervical cancer indicators
The main indicators of cervical cancer are still the examination of the cervix and cervical canal tissues. There are obvious cancerous changes, and under the microscope pathological sections can show tendencies of cell carcinogenesis, or already developed cancer. The second is the cytological examination of cervical scrapings, which detects the presence of cancer cells. The third is the iodine test, where areas that do not stain after iodine staining indicate a lack of glycogen in the epithelium, suggesting possible lesions. The fourth is colposcopy, which may reveal suspicious cancerous areas, allowing for biopsy to confirm cancer cells. The fifth includes ultrasound, CT, MRI, etc., which can detect mass occupying lesions, all of which are indicators of cervical cancer. Of course, abnormalities in tumor markers are also considered, but the main reliance is still on the indicators from pathological examinations to determine if it's cervical cancer.
Causes of cervical cancer
The causes of cervical cancer are closely related to several factors. Firstly, infection with the human papillomavirus (HPV) is highly related and is the fundamental cause of precancerous lesions and cervical cancer. Secondly, although HPV DNA is not detected in the tumor tissues of a minority of cases, particularly among older patients, epidemiological surveys indicate that early childbirth and multiple childbearing are closely related to the incidence of cervical cancer. Thirdly, it has been found that the incidence of cervical cancer in women is related to contact with high-risk men, such as those with penile cancer, prostate cancer, or those whose ex-wives had cervical cancer. Fourthly, smoking has a certain relationship with the incidence of cervical cancer as it can inhibit the body's immune function. Alcohol consumption, irregular diet, and lifestyle also have certain relationships with the incidence of cervical cancer.
How to prevent cervical cancer
How to prevent cervical cancer: Firstly, it is very important to prevent infection with the human papillomavirus (HPV). So, how can one prevent HPV infection? First, in choosing sexual partners, one should select a healthy male, generally a steady one, and avoid relationships with men who have penile cancer, prostate cancer, or whose ex-wife had cervical cancer, as these men are considered high-risk, and the women they come into contact with are also at increased risk of developing cervical cancer. Secondly, we should pay attention to personal hygiene. Thirdly, one should enhance their physical constitution to prevent viral infections and to maintain cleanliness. Fourthly, attention should be given to prevention of other contributing factors, such as early childbirth. Therefore, it is necessary to choose an appropriate age for childbirth. Multiple births are also related to cervical cancer, so if pregnant, one should avoid miscarriage and multiple dilation and curettage procedures. Fifthly, adhere to a healthy and reasonable diet, and avoid smoking and drinking alcohol.
Self-exam method for cervical cancer
There aren't many methods for self-examination of cervical cancer. If symptoms such as vaginal bleeding or discharge occur, it is crucial to visit a hospital for a gynecological examination promptly. Of course, the diagnosis of cervical cancer should still rely on the examination by specialist doctors at hospitals. There are cytological examinations of cervical scrapings available, as well as examinations of cervical and endocervical tissue to confirm whether it is cervical cancer or not. Particularly, the examination of cervical and endocervical tissue is the main basis for confirming cervical cancer. Therefore, we should still undertake pathological examinations to confirm whether it is cervical cancer or not, rather than relying solely on self-examination to diagnose cervical cancer.