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LARGE LOOP VERSUS STRAIGHT-WIRE EXCISION OF THE TRANSFORMATION ZONE FOR TREATMENT OF CERVICAL INTRAEPITHELIAL NEOPLASIA: A RANDOMISED CONTROLLED TRIAL OF ELECTROSURGICAL TECHNIQUES
Cervix Dysplasia
Cone Biopsy
Electrosurgery
Treatment Margins
Displasia do Colo do Útero
Biópsia
Eletrocirurgia
Terapêutica
Afiliación
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Rio de Janeiro, RJ, Brasil.
World Health Organization. International Agency for Research on Cancer. Walter Prendiville. Lyon, France.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Rio de Janeiro, RJ, Brasil.
World Health Organization. International Agency for Research on Cancer. Walter Prendiville. Lyon, France.
Resumen en ingles
Objective: To compare two electrosurgical techniques, straight-wire excision of transformation zone (SWETZ) with large loop excision of transformation zone, as a cone procedure (LLETZ-cone), for the treatment of cervical intraepithelial neoplasia (CIN), when disease is present at the cervical canal. Design: Randomised controlled trial. Setting: Two public hospitals, one in Rio de Janeiro, Brazil and one in Dublin, Ireland. Population: One hundred and three women with indication to treat CIN located at cervical canal. Methods: Women were randomised to receive LLETZ-cone or SWETZ. Outcomes: Main outcome was the incidence of complete excision of disease at endocervical margin of the surgical specimen. Secondary outcomes were complete excision at ectocervical and stromal margins, time to complete the procedure, specimen fragmentation, blood loss and death after 1 year. Results: Fifty-two women were allocated to LLETZ-cone and 51 to SWETZ. Ten women were lost for main outcome because of damaged specimens. Forty-two women in the LLETZ-cone group had free endocervical margin versus 43 women in the SWETZ group (relative risk 1.04, 95% confidence interval [95% CI] 0.87-1.25; P = 0.64). For secondary outcomes related to margins, we observed a relative risk of 1.15 (95% CI 0.95-1.39; P = 0.15) for ectocervical free margin. For free stromal margin, the relative risk was 1.07 (95% CI 0.89-1.29; P = 0.47). No death was observed. Conclusions: This study was inconclusive; SWETZ and LLETZ-cone were equally effective to treat endocervical disease, with no difference in protecting against margin involvement. Higher, but not severe, blood loss and longer surgical time were observed in the SWETZ group.
Palabras clave en ingles
Cervical Intraepithelial NeoplasiaCervix Dysplasia
Cone Biopsy
Electrosurgery
Treatment Margins
DeCS
Neoplasia Intraepitelial CervicalDisplasia do Colo do Útero
Biópsia
Eletrocirurgia
Terapêutica
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