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LEEP cone biopsy displaying normal cervical epithelium (far left) progressing to borderline koilocytosis, to LSIL, and to HSIL (far right). A squamous intraepithelial lesion (SIL) is an abnormal growth of epithelial cells on the surface of the cervix, commonly called squamous cells.
A low-grade squamous intraepithelial lesion (LSIL or LGSIL) indicates possible cervical dysplasia. LSIL usually indicates mild dysplasia (CIN 1), more than likely caused by a human papillomavirus infection. It is usually diagnosed following a Pap smear. [citation needed] CIN 1 is the most common and most benign form of cervical intraepithelial ...
When examining cytologic specimens, a diagnosis of ASC-US is given if squamous cells are suspicious for low-grade squamous intraepithelial lesion (LSIL) but do not fulfill the criteria. This may be due to limitations in the quality of the specimen, or because the abnormalities in the cells are milder than that seen in LSIL. [ 6 ]
The median rate for all preparations with low-grade squamous intraepithelial lesions using LBPs was 2.9% in 2006, compared with a 2003 median rate of 2.1%. Rates for high-grade squamous intraepithelial lesions (median, 0.5%) and atypical squamous cells have changed little. [32] Abnormal results are reported according to the Bethesda system. [33]
Papanicolaou stain showing a low-grade squamous intraepithelial lesion (LSIL) from a Pap test. Cell nuclei stained blue.. Papanicolaou stain (also Papanicolaou's stain and Pap stain) is a multichromatic (multicolored) cytological staining technique developed by George Papanicolaou in 1942.
C. High-grade dysplasia, here called high grade squamous intraepithelial lesion (HSIL) D. Squamous cell carcinoma , infiltrating the stroma (middle and left in image), and HSIL (right in image) Epithelial dysplasia , a term becoming increasingly referred to as intraepithelial neoplasia , is the sum of various disturbances of epithelial ...
A Pap test showing a low-grade squamous intraepithelial lesion (LSIL). Pap stain.. Gynaecologic cytology, also gynecologic cytology, is a field of pathology concerned with the investigation of disorders of the female genital tract.
High-grade squamous intraepithelial lesion Represents a mix of low- and high-grade lesions not easily differentiated by histology; HSIL+ encompasses HSIL, AGC, and cancer; CIN 2 (Grade II) Moderate dysplasia confined to the basal 2/3 of the epithelium; Represents a mix of low- and high-grade lesions not easily differentiated by histology