ABSTRACT
Introducción Actualmente, entre un 25 y un 35% de los cánceres de mama se diagnostican como lesiones no palpables. La detección de lesiones cada vez más pequeñas exige el desarrollo de nuevas técnicas prequirúrgicas de marcación y localización. Presentamos la experiencia del Hospital Italiano de Buenos Aires con la técnica de localización radioguiada de lesiones no palpables y ganglio centinela (snoll). Objetivos El objetivo de este trabajo es describir las características clínico-patológicas de las pacientes sometidas a dicha técnica y las ventajas, desventajas, complicaciones y resultados en términos de márgenes libres, tasa de retumorectomías, volumen tumoral resecado y tiempo quirúrgico. Material y método Se trata de un estudio observacional, retrospectivo. Se incluyeron todas las pacientes con carcinomas no palpables en quienes se llevó a cabo la técnica de snoll entre el 1 de agosto de 2016 y el 4 de mayo de 2017. Resultados Se incluyó un total de 25 pacientes, todas con diagnóstico previo de carcinoma de mama invasor a través de una punción histológica. Utilizando la técnica snoll, se logró identificar la lesión de mama en el 96% de las pacientes. En el 100% de las pacientes, los márgenes quirúrgicos estaban libres de lesión, por lo que no se realizaron retumorectomías. Se identificó el 100% de los ganglios centinelas, 76% mediante la técnica snoll y 24% mediante la inyección previa del colorante Azul Patente. Conclusiones La técnica snoll demostró ser una técnica sencilla, que mejora el confort de la paciente y que presenta resultados comparables con las técnicas tradicionales. Si bien se trata de una primera experiencia, son alentadores los resultados en términos de márgenes libres, tiempo quirúrgico y volumen resecados.
Introduction Currently, about 25 to 35% of all breast tumors are diagnosed at a nonpalpable stage. The increasing ability to detect small lesions consequently demands the development of novel technology for preoperative lesion identification and intraoperative localization. In this study, we present our initial experience using Sentinel Node Occult Lesion Localization (snoll) at the Hospital Italiano de Buenos Aires. Objectives The objective of this study is to describe clinical and pathological characteristics of patients who were submitted to snoll technique and the advantages and disadvantages, complications and results in terms of tumor-free margins, subsequent surgery rate, total specimen volume and surgical time. Materials and method This is a retrospective, observational study. We included all patients with non-palpable breast cancer who were submitted to surgery and snoll technique between August 1st, 2016 and March 14th, 2017. Results A total of 25 patients were included in this study. All patients had previous diagnosis of invasive breast cancer by core needle biopsy. The breast lesion was correctly identified in 96% of patients through snoll. Surgical margins were tumor-free in all patients. No patients required subsequent surgery. All sentinel nodes were correctly identified. In 76% of cases, snoll was sufficient and in 24% additional injection of patent blue was required. Conclusions In our experience, snoll has proven to be a simple technique that improves patient comfort and shows comparable results when compared to traditional identification methods. Although these are our initial results, we believe our findings to be promising in terms of adequacy of margins, surgical time and total specimen volume.
Subject(s)
Humans , Female , Breast Neoplasms , Sentinel Lymph NodeABSTRACT
Com o aumento do rastreamento mamográfico, identificam-se cada vez mais lesões menores e não palpáveis, surgindo a necessidade de localiza-las tanto para diagnóstico como para tratamento. Neste trabalho, descreveram-se a técnica e suas indicações e apresentaram-se os resultados dos casos de agulhamento do Serviço de Mastologia e Radiologia do Hospital de Clínicas de Porto Alegre (HCPA). Métodos: Avaliaram-se, retrospectivamente, 586 casos de agulhamento operados no período de 1995 a 2004. As indicações para o procedimento foram as alterações mamográficas de lesões não palpáveis, classificadas de acordo o sistema BIRADS. Resultados: A principal indicação cirúrgica foram as microcalcificações, num total de 373 casos (63,7%), seguidas de nódulos em 37,2%. A idade média das pacientes foi de 53 anos (23 a 82). O valor preditivo positivo (VPP) geral para malignidade foi de 0,30 (177/586 casos). As alterações funcionais benignas da mama (AFBMs) corresponderam ao diagnóstico mais comum (34,1%). Noventa e quatro por cento dos casos de carcinoma ductal in situ (CDIS) foram diagnosticados mamograficamente como microcalcificações. Conclusões: Considerando os dados apresentados e a experiência do serviço, a biópsia por agulhamento continua sendo o principal procedimento para diagnóstico e tratamento de lesões não palpáveis. Trata-se de um método seguro, porém não isento de riscos.
With the increasing use of mammography, more and smaller non- palpable lesions are found, bringing the need of localize them for diagnostic and even therapeutic purposes. We describe the surgical technique, indications and results with the well-known standard procedure of excision after wire localization. Method: We retrospectively evaluated the result of 586 wire localizations between 1995 and 2004. The indications for the procedure were non-palpable mammographic abnormalities classified according to BIRADS system. Results: The main indication for this procedure were microcalcifications in 63.7% of the cases (n=373), followed by lumps 37.2%. The mean age of these patients was 53 years (range 23- 82 years). We observed an overall positive predictive value (PPV) for malignancy of 0.30 (177/586 cases). Benign fybrocistic changes was found as the most common pathological diagnosis (34.1%). Ninety-four per cent of the ductal carcinoma in situ were detected mammographically as microcalcifications. Conclusions: The authors call attention for the use of a very careful and delicate surgical technique in order to achieve the best results. Our experience confirm that the wire-guided excision of non-palpable breast lesions is a safe and reliable diagnostic/therapeutic procedure.
Subject(s)
Humans , Female , Adult , Middle Aged , Aged, 80 and over , Biopsy, Needle/methods , Carcinoma, Intraductal, Noninfiltrating/surgery , Carcinoma, Intraductal, Noninfiltrating/diagnosis , Breast Diseases/diagnosis , Breast Diseases/therapy , Lymph Node Excision/methods , Breast/surgery , Breast/injuries , Evaluation of Results of Therapeutic Interventions , Fibrocystic Breast Disease , Mammography , Predictive Value of Tests , Ultrasonography, MammaryABSTRACT
As técnicas conjuntas da mastologia com auxílio da medicina nuclear representam um importante papel na atualidade. A investigação das lesões não palpáveis da mama por meio das cirurgias radioguiadas (ROLL), e a possibilidade da cirurgia conservadora da axila, por meio da análise do linfonodo sentinela (LS), são avanços tecnológicos disponíveis e cada vez mais utilizados na prática clínica. A utilização dessas duas técnicas conjugadas (SNOLL) procura associar as facilidades de ROLL com os benefícios do linfonodo sentinela, uma vez que o amplo uso dos métodos invasivos para diagnóstico do câncer de mama, tais como PAAF, core biopsy e mamotomia, permite o planejamento cirúrgico definitivo e simultâneo do tumor e da axila.
The multidiciplinary approach plays an important role in the evaluation and treatment of breast cancer. It included nuclear medicine in the last years.The radioguided ocult localization (ROLL) and the conservative surgery of the axilla (sentinel lymph node) are pratice of choice for managemente of many patients with breast cancer. The simultaneous use of both procedures (SNOLL) associates the facilities of the radioguided localization of the breast lesion and sentinel lymph node at the same surgery; it shows some benefits once the widespread use of interventional image techniques provide histologic diagnoses and makes possible the definitive surgical management of malignant lesions of the breast.