RESUMO
Objective: To study the effect of raloxifene on endometrial histopathology of menopausal women. Methods: Thirty-one patients under raloxifene treatment (60 mg/day) for a six-month period and submitted to diagnostic videohysteroscopy at the Climateric Outpatients Clinic, Department of Gynecology and Obstetrics, Hospital do Servidor Público Estadual Francisco Morato de Oliveira, in the city of São Paulo, and at Hospital Guilherme Álvaro, in the city of Santos, from September 10th, 2003 to June 22nd, 2004, were analyzed. Guided endometrial biopsy was performed on all patients on the anterior wall, using a 3-mm or 5-mm biopsy forceps. A 3-mm or 5-mm hysteroscope was used with TV imaging by an endocamera. The results of the hysteroscopic tests were compared before and six months after the use of raloxifene. Results: The comparison between both biopsies was performed by means of the McNemars test (marginal homogeneity test), and showed a descriptive level of 0.001 that indicates difference between the estrogen effects assessed at different moments. The estrogen effect on the endometrial tissue did not increase in any of the 31 patients analyzed. Twenty-one patients (68%) showed smaller estrogen effect in the final evaluation. Conclusions: The study showed no evidence of endometrial stimulation of raloxifene and, in fact, many women presented less estrogen effect after its use.
Objetivo: Estudar o efeito do raloxifeno sobre a histopatologia endometrial em mulheres menopausadas. Métodos: Foram estudadas 31 pacientes usuárias de raloxifeno (60 mg/dia) por um período de seis meses e que realizaram vídeo-histeroscopias diagnósticas nos ambulatórios de Climatério do Serviço de Ginecologia e Obstetrícia do Hospital do Servidor Público Estadual "Francisco Morato de Oliveira", São Paulo, e do Hospital Guilherme Álvaro, da cidade de Santos (SP), de 10 de setembro de 2003 a 22 de junho de 2004. Em todas as pacientes foi realizada biópsia endometrial dirigida em parede anterior com pinça de biópsia de 3 ou 5 mm. Os histeroscópios utilizados foram de 3 ou 5 mm de calibre com visualização da imagem em monitor de televisão por endocâmera. Os resultados dos exames histeroscópicos foram comparados antes e seis meses após o uso do raloxifeno. Resultados: A comparação entre os resultados das duas biópsias, feita por meio do teste de McNemar (teste de homogeneidade marginal), obteve nível descritivo igual a 0,001, o que indica diferença entre os efeitos estrogênicos avaliados em diferentes instantes. O efeito estrogênico no endométrio não se acentuou em nenhuma das 31 pacientes analisadas. Em 21 pacientes (68%) foi observado, ao final, menor efeito estrogênico em relação ao exame inicial. Conclusões: O estudo não mostrou evidências de que o raloxifeno tenha efeito estimulante sobre o endométrio, tendo sido observada inclusive menor ação estrogênica após o uso da droga em um número alto de casos.
RESUMO
OBJECTIVE: To study the effect of raloxifene on endometrial histopathology of menopausal women. METHODS: Thirty-one patients under raloxifene treatment (60 mg/day) for a six-month period and submitted to diagnostic videohysteroscopy at the Climateric Outpatients Clinic, Department of Gynecology and Obstetrics, Hospital do Servidor Público Estadual Francisco Morato de Oliveira, in the city of São Paulo, and at Hospital Guilherme Álvaro, in the city of Santos, from September 10th, 2003 to June 22nd, 2004, were analyzed. Guided endometrial biopsy was performed on all patients on the anterior wall, using a 3-mm or 5-mm biopsy forceps. A 3-mm or 5-mm hysteroscope was used with TV imaging by an endocamera. The results of the hysteroscopic tests were compared before and six months after the use of raloxifene. RESULTS: The comparison between both biopsies was performed by means of the McNemar's test (marginal homogeneity test), and showed a descriptive level of 0.001 that indicates difference between the estrogen effects assessed at different moments. The estrogen effect on the endometrial tissue did not increase in any of the 31 patients analyzed. Twenty-one patients (68%) showed smaller estrogen effect in the final evaluation. CONCLUSIONS: The study showed no evidence of endometrial stimulation of raloxifene and, in fact, many women presented less estrogen effect after its use.
