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Reported rates of therapeutic effectiveness for the loop This study was designed to compare the effectiveness of loop procedure range from 60 to 95%, depending upon criteria excision procedures as ablation and conization equivalents, and used to define failure, and are similar to the reported effectheir use in recurrent cervical high-grade dysplasia patients. We tiveness of other procedures [4,[7][8][9][10][11][12][13][14][15]. The additional beneretrospectively reviewed patients undergoing loop procedures be-fit of having tissue for histologic evaluation reveals an unextween January 1992 and April 1994. Conization equivalents were pected invasive cancer in 0.1 to 10.3% of patients who had defined as procedures performed for unsatisfactory colposcopy, a more favorable colposcopic impression [10, 15, 16] were eligible for inclusion in this study. Gynecologic oncologists or residents working under their direct supervi-INTRODUCTION sion performed all loop procedures. These procedures were performed as outpatients either in the office or in a Treatment for cervical dysplasia traditionally has been limited to excisional techniques, such as the cold knife cone surgical center. Loop procedures were performed using either Valleylab Force 2 or Aspen electrosurgical units biopsy, and ablative techniques, such as hot cautery and cryotherapy. The advantage of cone biopsy is that it is both and disposable stainless-steel wire loops 0.2 mm in diameter in various shapes and sizes. The diathermy unit was diagnostic and therapeutic and provides a specimen for pathologic evaluation. A disadvantage of the procedure is set to blend 40-W cutting with 30-W coagulation. All specimens were fixed with 10% Formalin, serially secthat it must be performed in the operating room with general or regional anesthesia. Ablative techniques are office based tioned, embedded in paraffin, processed with the standard overnight technique, and stained with hematoxylin and and are associated with less complications than conization [1][2][3][4]. A loop excision procedure was introduced by Prindi-eosin.Charts were reviewed and the following data were obville et al. [5] in 1986 which is associated with a low complication rate and offers the patient and physician the opportu-tained: age, parity, initiating cervical cytology, biopsy histology, and information about adequacy of colposcopy and nity of obtaining a histopathologic diagnosis on an outpatient basis [6].indication for the loop procedure. Ablation equivalent proce-241

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