DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Colposcopy of pre-cancerous cervix (CIN 3) iodine stained. Colposcopic view of a severely abnormal, pre-cancerous cervix (at centre). The cervix has been stained with iodine, giving it a brown appearance. Abnormal (dysplastic) cells appear chocolate coloured, around the central canal and have a very high risk of cancerous change. The canal is bleeding abnormally, sloughing off the the abnormal lining as a yellow-green discharge (at centre). This change has been graded in terms of severity and is referred to as CIN (Cervical Intra-epithelial Neoplasia). Grade 1 is mild, grade 2, moderate and grade 3 CIN is severe dysplasia. Treatment is surgery or radiotherapy.
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