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Cervical conization (CPT codes 57520 (Cold Knife) and 57522 (Loop Excision)) refers to an excision of a cone-shaped sample of tissue from the mucous membrane of the cervix. Conization may be used either for diagnostic purposes as part of a biopsy, or for therapeutic purposes to remove pre-cancerous cells.[1]

Cervical conization

Types include:

Conization of the cervix is a common treatment for dysplasia following abnormal results from a pap smear.

Side effectsEdit

Cervical conization causes a risk for subsequent pregnancies ending up in preterm birth of approximately 30% on average, due to cervical incompetence.[3]

See alsoEdit


  1. ^ "Conization of Cervix: eMedicine Obstetrics and Gynecology". Retrieved 2010-01-03.
  2. ^ Arbyn M, Kyrgiou M, Simoens C, et al. (2008). "Perinatal mortality and other severe adverse pregnancy outcomes associated with treatment of cervical intraepithelial neoplasia: meta-analysis". BMJ. 337: a1284. doi:10.1136/bmj.a1284. PMC 2544379. PMID 18801868.
  3. ^ Lee, Seung Mi; Jun, Jong Kwan (2010). "Prediction and prevention of preterm birth after cervical conization". Journal of Gynecologic Oncology. 21 (4): 207. doi:10.3802/jgo.2010.21.4.207. ISSN 2005-0380. PMC 3026297.