part of part of uterine cervix cervix epithelium cervical transformation zone epithelium 2022-11-29T14:10:04Z cervix transition zone cervical transformation zone Before puberty and after menopause the transformation zone resides in the cervical canal. During the reproductive age of the woman it is located just outside the external os. Squamous cervical cancer originates in the transition zone. Glandular cervical cancer originates in either the transformation zone or the glandular epithelium above the transformation zone. The cervical transformation zone epithelium is an area where squamous metaplasia occurs. UBERON:8480035 The area of epithelium that lies between the native and unaffected columnar epithelium of the endocervical canal and the native squamous epithelium deriving from the vaginal and ectocervical squamous epithelium. transformation (transitional) zone transformation zone of the cervix Paula Duek Roggli