Application scope of colposcopy

Colposcopy is gradually widely used in clinical practice in China and has been recognized as an indispensable means to improve the quality of diagnosis of lower genital tract lesions. Obstetricians and gynecologists realize that it is not comprehensive enough to rely solely on visual observation, cytological screening, and biopsy when in doubt. Since the absence of lesion localization measures during biopsy is blind, it often affects the positive detection rate. If Biopsy under colposcopy positioning can greatly increase the positive detection rate. With the continuous development of photoelectric technology, photography technology and computer applications, colposcopy not only has certain value in the diagnosis of cervical, vaginal and vulvar diseases, but also for tracking the effects of follow-up treatment, and It plays a greater role in further studying the etiology, pathogenesis and pathological process of tumor development. Colposcopy also has its limitations. It cannot see lesions in the cervical canal. It cannot be used to diagnose lesions in the cervical canal that have atrophied after menopause, or when the squamocolumnar junction is retracted into the cervical canal and is not easily exposed, it cannot be used for vaginal examination. Mirror evaluation.

Colposcopy is mainly used to observe the cervix, vagina, vulva and genital lesions of the lower reproductive tract. Because the colposcope can magnify the lesion 10-40 times, it can observe smaller lesions that are invisible to the naked eye. It can also perform biopsy under the colposcope positioning, thus increasing the positive detection rate and assisting clinical early detection of precancerous lesions and Cancerous. If cytological methods are used together with colposcopy and microscopic biopsy, as well as cervical canal curettage when necessary, the diagnostic accuracy of precancerous lesions and early invasive cancer can be improved to 92%. Early treatment can significantly improve the diagnosis of precancerous lesions and early invasive cancer. Improve patient survival rates. Therefore, colposcopy is an important means for early diagnosis and early treatment of lower reproductive tract cancer. In addition, electronic colposcopy can also be used clinically for ablation and resection of vegetations. With the continuous development of photoelectric technology, photography technology and computer applications, colposcopy has certain value not only in the diagnosis of cervical, vaginal and vulvar lesions, but also for tracking the effects of follow-up treatment and further studying the causes and causes of cancer. The pathogenesis and pathological processes of tumor development have a greater role. Colposcopy can also identify some benign lesions to avoid unnecessary biopsies, such as inflammation, polyps, cervical hyperplasia and hyperplasia of pregnant women, etc.; colposcopy can help reduce the chance of missed diagnosis of false negatives of exfoliated cells, and can also reduce some Cervical conization. Colposcopy can not only assist in the diagnosis of vaginal adenosis, but also has special identification value. It can also identify verrucous hyperplasia in sexually transmitted diseases of the lower genital tract.