Large loop excision of transformation zone procedures used in the management of cytological abnormalities of the cervix.

Background:   National Health and Medical Research Council (NHMRC) guidelines published in 2005 changed the management of cervical squamous intraepithelial lesions. Asymptomatic low-grade abnormalities may be treated conservatively as many regress spontaneously. Cervical changes reflect infection with the human papilloma virus (HPV).