#Pathology #cervix #has-images #obgyn
The reason that cytologic screening is so effective in preventing cervical cancer is that most cancers arise from precursor lesions over the course of years. These lesions shed abnormal cells that can be detected on cytologic examination. Using a spatula or brush, the transformation zone of the cervix is circumferentially scraped and the cells are smeared or spun down onto a slide. Following fixation and staining with the Papanicolaou method, the smears are screened microscopically by eye or (increasingly) with automated image analysis systems.
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- (no access) - [Robbins Pathology] Vinay Kumar, Abul Abbas, Jon Aster - Robbins & Cotran Pathologic Basis of Disease (2020, Elsevier) - libgen.lc.pdf, p988
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