Auxiliary examination of cervical precancerous lesions

The appearance of cervical precancerous lesions has dealt a heavy blow to people. If patients with cervical precancerous lesions are not cured in time, their condition will worsen. Therefore, early detection and early treatment of cervical precancerous lesions have many benefits. The diagnosis of cervical precancerous lesions is also very important. What auxiliary examinations do patients with cervical precancerous lesions need to do?

(1) Cervical smear cytology examination

It is the main method to find the early lesions and early cervical precancerous lesions of cervical cancer, but attention should be paid to the correct sampling site and careful microscopic examination, which may have a false negative rate of 5%-10%. Therefore, it should be combined with clinical conditions and regular examinations to screen with this method.

(2) Iodine test

Normal cervical or vaginal squamous epithelium contains abundant glycogen, which can be dyed brown by iodine solution, while endocervical columnar epithelium, cervical erosion and abnormal squamous epithelium have no glycogen and therefore are not colored. In clinical practice, after exposing the cervix with a vaginal speculum, the surface mucus is wiped off, and the cervix and fornix are smeared with iodine solution. If an abnormal iodine-negative area is found, a biopsy can be taken from this area for pathological examination.

(3) Biopsy of cervix and endocervical canal

When the cervical smear cytology examination is grade III to IV or above, but the cervical biopsy is negative, a biopsy should be taken at the junction of the cervical squamous column and the point, or multiple tissues should be taken from the unstained area of ​​the iodine test and the suspected cancerous site for biopsy, or a small scraper should be used to scrape the endocervical canal and send the scraped material for pathological examination.

(4) Colposcopy

Colposcopy cannot directly diagnose cancer, but it can help select the biopsy site for cervical biopsy. According to statistics, if a biopsy can be taken with the assistance of colposcopy, the diagnostic accuracy of early cervical precancerous lesions can reach about 98%, but colposcopy cannot replace scraping cytology and biopsy, nor can it detect lesions in the cervical canal.

(5) Cervical conization

When biopsy is uncertain about the presence or absence of invasive cancer, cervical cone excision can be performed, but diagnostic cervical cone excision is rarely used nowadays. When cervical precancerous lesions are established, lung radiography, lymph node angiography, cystoscopy and colonoscopy can be performed according to the specific situation to determine the clinical stage of cervical precancerous lesions.

Female friends should be healthy women, strengthen health care, pay attention to their own hygiene, try their best to block all the ways of cervical precancerous lesions, and seek medical treatment in time when symptoms are found. Early detection and early treatment are achieved.