Laser cylindrical excision to replace conization.

This report describes the procedures and results of two techniques, which were developed by the senior author (V.C.W.), for eliminating cervical intraepithelial neoplasia involving, to some degree, the endocervical canal. These are excision by carbon dioxide laser of a tall cylinder of tissue for pure endocervical lesions and shallow excision of a similar specimen followed by peripheral vaporization. In 364 consecutive referred cases one of these two procedures was performed. A total of 15.9% of patients required attention for bleeding; most cases were managed in the clinic. Near-normal tissue mass and a squamocolumnar junction at the os were observed during 3 to 60 months of follow-up. In 95.9% of cases, over half of which were grade 3 cervical intraepithelial neoplasia, normal cytologic and colposcopic findings were demonstrated after one laser procedure. A repeat laser procedure was used to eliminate persistent disease identified at 3 or 6 months. Five hysterectomies were performed. These procedures appear to be therapeutically effective, appear to preserve organ function, and allow regeneration of cervical mass.