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About 50% of CIN 2 cases will regress within two years without treatment. [citation needed] Progression to cervical carcinoma in situ (CIS) occurs in approximately 11% of CIN 1 and 22% of CIN 2 cases. Progression to invasive cancer occurs in approximately 1% of CIN 1, 5% of CIN 2, and at least 12% of CIN 3 cases.
The treatment of cervical cancer varies worldwide, largely due to access to surgeons skilled in radical pelvic surgery and the emergence of fertility-sparing therapy in developed nations. Less advanced stages of cervical cancer typically have treatment options that allow fertility to be maintained if the patient desires. [94]
The cervix is divided into two parts based on the types of cells. The outer portion of the cervix is called the ectocervix, while the inner portion of the cervix is the endocervix. These two portions of the cervix have different types of cells. The area where the endocervix and ectocervix meet is known as the transformation zone.
The term carcinoma in situ may be used interchangeably with high-grade SIL. [8] Ductal carcinoma in situ of the breast is the most common precancer in women. Bowen's disease is a squamous carcinoma in situ of the skin. Colon polyps often contain areas of CIS that will almost always transform into colon cancer if left untreated.
The loop electrosurgical excision procedure (LEEP) is one of the most commonly used approaches to treat high grade cervical dysplasia (CIN II/III, HGSIL) and early stage cervical cancer discovered on colposcopic examination. In the UK, it is known as large loop excision of the transformation zone (LLETZ).
A long-awaited study offers hope to women with early stage breast cancer. ... ductal carcinoma in situ, the earliest stage of cancer that in most cases remains in the milk ducts and does not ...
A precancerous condition is a condition, tumor or lesion involving abnormal cells which are associated with an increased risk of developing into cancer. [1] [2] [3] Clinically, precancerous conditions encompass a variety of abnormal tissues with an increased risk of developing into cancer.
Of all women with HSIL results, 2% [8] or less [9] have invasive cervical cancer at that time, however about 20% would progress to having invasive cervical cancer without treatment. [ 10 ] [ needs update ] To combat this progression, HSIL is usually followed by an immediate colposcopy with biopsy to sample or remove the dysplastic tissue.