You will have a cervical cone biopsy and endocervical curettage (ECC) performed. A cone biopsy is surgery to remove a cone-shaped piece of tissue from the cervix and cervical canal. It is used to diagnose cervical cancer and also to learn how extensive the disease is. An ECC is a procedure using a curette, a spoon-shaped instrument, that is used to scrape the mucus membrane of the endocervical canal (passageway between cervix and uterus) in order to get a tissue sample.