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Dysplasia is the earliest form of precancerous lesion which pathologists can recognize in a pap smear or in a biopsy. Dysplasia can be low grade or high grade. The risk of low-grade dysplasia transforming into high-grade dysplasia, and eventually cancer, is low. Treatment is usually straightforward.
Dysplasia is any of various types of abnormal growth or development of cells (microscopic scale) or organs (macroscopic scale), and the abnormal histology or anatomical structure(s) resulting from such growth. [1] Dysplasias on a mainly microscopic scale include epithelial dysplasia and fibrous dysplasia of bone.
4.1.2 Low-grade squamous intraepithelial lesion ... A koilocyte is a squamous epithelial cell that has undergone a number of structural ... resulting in dysplasia. [4]
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
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.
Gastrointestinal intraepithelial neoplasia (GIN or GIIN) is also known as gastrointestinal dysplasia. Gastrointestinal dysplasia refers to abnormal growth of the epithelial tissue lining the gastrointestinal tract including the esophagus, stomach, and colon. Pancreatic, biliary, and rectal Intraepithelial Neoplasia are discussed separately. The ...
Dysplasia is the earliest form of precancerous lesion recognizable in a biopsy. Dysplasia can be low-grade or high-grade. High-grade dysplasia may also be referred to as carcinoma in situ. Invasive carcinoma, usually simply called cancer, has the potential to invade and spread to surrounding tissues and structures, and may eventually be lethal.
Mild dysplasia Moderate dysplasia Severe dysplasia / carcinoma in situ HPV-negative lesion with atypical keratinocytes in the basal cell layer WHO 2003 [3] Vulvar intraepithelial neoplasia (VIN) 1: VIN 2: VIN 3: VIN 3 WHO 2014 and ISSVD 2015 [3] Low-grade squamous intraepithelial lesion (LSIL) High-grade squamous intraepithelial lesion (HSIL)