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Conization: The excision of a cone of tissue, especially of the CERVIX UTERI.Electrosurgery: Division of tissues by a high-frequency current applied locally with a metal instrument or needle. (Stedman, 25th ed)Diathermy: The induction of local hyperthermia by either short radio waves or high-frequency sound waves.Cervical Intraepithelial Neoplasia: A malignancy arising in uterine cervical epithelium and confined thereto, representing a continuum of histological changes ranging from well-differentiated CIN 1 (formerly, mild dysplasia) to severe dysplasia/carcinoma in situ, CIN 3. The lesion arises at the squamocolumnar cell junction at the transformation zone of the endocervical canal, with a variable tendency to develop invasive epidermoid carcinoma, a tendency that is enhanced by concomitant human papillomaviral infection. (Segen, Dictionary of Modern Medicine, 1992)Hysterectomy: Excision of the uterus.Uterine Cervical Neoplasms: Tumors or cancer of the UTERINE CERVIX.Cervix Uteri: The neck portion of the UTERUS between the lower isthmus and the VAGINA forming the cervical canal.Frozen Sections: Thinly cut sections of frozen tissue specimens prepared with a cryostat or freezing microtome.Colposcopy: The examination, therapy or surgery of the cervix and vagina by means of a specially designed endoscope introduced vaginally.Dilatation and Curettage: Dilatation of the cervix uteri followed by a scraping of the endometrium with a curette.Uterine Cervical Dysplasia: Abnormal development of immature squamous EPITHELIAL CELLS of the UTERINE CERVIX, a term used to describe premalignant cytological changes in the cervical EPITHELIUM. These atypical cells do not penetrate the epithelial BASEMENT MEMBRANE.Cryosurgery: The use of freezing as a special surgical technique to destroy or excise tissue.Laser Therapy: The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.Carcinoma in Situ: A lesion with cytological characteristics associated with invasive carcinoma but the tumor cells are confined to the epithelium of origin, without invasion of the basement membrane.Vaginal Smears: Collection of pooled secretions of the posterior vaginal fornix for cytologic examination.Biopsy: Removal and pathologic examination of specimens in the form of small pieces of tissue from the living body.