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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. [3]
The World Health Organization classification system was descriptive of the lesions, naming them mild, moderate, or severe dysplasia or carcinoma in situ (CIS). [ 66 ] [ 67 ] The term cervical intraepithelial neoplasia (CIN) was developed to place emphasis on the spectrum of abnormality in these lesions, and to help standardize treatment. [ 67 ]
The Bethesda system (TBS), officially called The Bethesda System for Reporting Cervical Cytology, is a system for reporting cervical or vaginal cytologic diagnoses, [1] used for reporting Pap smear results. It was introduced in 1988 [2] and revised in 1991, [3] 2001, [1] [4] [5] and 2014. [6]
Cervical cancer staging is the assessment of cervical cancer to determine the extent of the spread of cancer beyond the cervix. [12] This is important for determining how serious the cancer is and to create the best treatment plan.
Sometimes, the term "precancer" is also used for carcinoma in situ, which is a noninvasive cancer that has not grown and spread to nearby tissue, unlike the invasive stage. As with other precancerous conditions, not all carcinoma in situ will become an invasive disease but is at risk of doing so.
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 ...
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.
But a new study suggests this standard protocol might not be necessary for a common form of early-stage breast cancer. Ductal carcinoma in situ, or DCIS, accounts for up to 25% of diagnosed breast ...