USMLE Step 2 CK Lecture Notes 2019: Obstetrics/Gynecology (Kaplan Test Prep)

(Kiana) #1

COLD KNIFE CONE BIOPSY


Cold knife cone biopsy is a minor outpatient surgical procedure performed in the
operating room under local or general anesthesia. It is a diagnostic test that
examines the histology of cervical lesions.


A   cone-shaped tissue  specimen    is  obtained    with    a   scalpel by  performing  a
circumferential incision of the cervix with a diameter that is wider at the
cervical os and narrower toward the endocervical canal. The tissue is sent to
pathology for histologic diagnosis.
Wide-shallow cone is performed if the Pap smear shows changes more
severe than the colposcopically directed biopsy.
Narrow-deep cone is performed if a lesion extends from the exocervix into
the endocervical canal.
Long-term risks include cervical stenosis, cervical insufficiency, and preterm
birth.
Free download pdf