Ablación por radiofrecuencia del lecho quirúrgico tras tumorectomía en cirugía conservadora del cáncer de mama / Radiofrequency Ablation of the Surgical Bed After Lumpectomy in Breast-conserving Surgery

INTRODUCCIÓN: Obtener márgenes libres en cirugía conservadora del cáncer de mama (CCCM) es esencial para evitar la recurrencia local, precisando para ello la reintervención en múltiples ocasiones. La ablación por radiofrecuencia (ARF) de los márgenes tras tumorectomía parece ser una herramienta útil para evitar las reintervenciones, aunque con insuficiente evidencia. En este estudio se analiza la eficacia y seguridad de la ARF tras la CCCM para obtener márgenes libres. MÉTODOS: Estudio experimental, no aleatorizado, realizado en un grupo intervención de 40 pacientes al que se aplicó ARF tras tumorectomía y exéresis posterior de los márgenes, y otro grupo control histórico de 40 pacientes al que se realizó CCCM. En el grupo intervención, se analizó el efecto de la ARF sobre la viabilidad de las células tumorales en los márgenes extirpados. Se realizó además un análisis comparativo sobre el porcentaje de reintervenciones, las complicaciones y el resultado estético en ambos grupos. RESULTADOS: Se estudiaron 240 márgenes extirpados tras ARF, evidenciando un elevado número de márgenes libres. Comparado con el grupo control, disminuyó significativamente el número de reintervenciones (0% vs. 12%; p = 0,02), sin hallar diferencias respecto a las complicaciones (5% vs. 10%; p = 0,67) ni al resultado estético (excelente o bueno 92,5% vs. 95%; p = 0,3). CONCLUSIONES: La ARF tras tumorectomía es una técnica sencilla, segura y eficaz para la obtención de márgenes libres, y permite reducir las reintervenciones sin afectar a las complicaciones ni al resultado estético

INTRODUCTION: Obtaining tumor-free margins during breast conservative surgery (BCS) is essential to avoid local recurrence and frequently requires reoperation. Radiofrequency ablation (RFA) of surgical margins after lumpectomy seems to be a helpful tool to avoid reoperations, but evidence is insufficient. This study analyzes the efficacy and safety of RFA after BCS to obtain free surgical margins. METHODS: Non-randomized experimental study performed in an intervention group of 40 patients assigned to receive RFA after lumpectomy and successive resection of surgical margins, and a historical control group of 40 patients treated with BCS alone. In the intervention group, the RFA effect on tumor cell viability in the surgical margins was analyzed. Also, reoperation rate, complications and cosmetic results were compared in both groups. RESULTS: A total of 240 excised margins were analyzed after RFA, obtaining a high number of tumor-free margins. Compared to the control group, the reoperation rate decreased significantly (0% vs 12%; P = .02), without differences in terms of postoperative complications (10% vs 5%; P = .67) or cosmetic results (excellent or good 92.5% vs 95%; P = .3). CONCLUSIONS: RFA after lumpectomy is a reliable, safe and successful procedure to obtain tumor-free surgical margins and to decrease the reoperation rate without affecting complications or compromising cosmetic results

Exéresis radioguiada con semilla de I125 en recidiva metastásica ganglionar en carcinoma medular de tiroides / Image-guided excision with I125 seed in lymph node metastasis of medullary thyroid carcinoma

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Radiofrequency Ablation of the Surgical Bed After Lumpectomy in Breast-conserving Surgery. / Ablación por radiofrecuencia del lecho quirúrgico tras tumorectomía en cirugía conservadora del cáncer de mama.

INTRODUCTION: Obtaining tumor-free margins during breast conservative surgery (BCS) is essential to avoid local recurrence and frequently requires reoperation. Radiofrequency ablation (RFA) of surgical margins after lumpectomy seems to be a helpful tool to avoid reoperations, but evidence is insufficient. This study analyzes the efficacy and safety of RFA after BCS to obtain free surgical margins. METHODS: Non-randomized experimental study performed in an intervention group of 40 patients assigned to receive RFA after lumpectomy and successive resection of surgical margins, and a historical control group of 40 patients treated with BCS alone. In the intervention group, the RFA effect on tumor cell viability in the surgical margins was analyzed. Also, reoperation rate, complications and cosmetic results were compared in both groups. RESULTS: A total of 240 excised margins were analyzed after RFA, obtaining a high number of tumor-free margins. Compared to the control group, the reoperation rate decreased significantly (0% vs 12%; P=.02), without differences in terms of postoperative complications (10% vs 5%; P=.67) or cosmetic results (excellent or good 92.5% vs 95%; P=.3). CONCLUSIONS: RFA after lumpectomy is a reliable, safe and successful procedure to obtain tumor-free surgical margins and to decrease the reoperation rate without affecting complications or compromising cosmetic results.

Empleo, eficacia y repercusión clínica del apoyo radiológico al diagnóstico de la apendicitis aguda / Radiological support for diagnosis of acute appendicitis: Use, effectiveness and clinical repercussions

OBJETIVO: Analizar el incremento del apoyo radiológico solicitado para el diagnóstico de la apendicitis aguda (AA), su justificación a partir de su repercusión clínica así como los parámetros de rentabilidad diagnóstica de ECO y TAC para esta enfermedad. MATERIAL Y MÉTODO: Estudio observacional analítico de cohortes, con pacientes intervenidos por sospecha de AA en un hospital de tercer nivel, excluyendo menores de 14 años y gestantes. Grupo de estudio: enero de 2010-diciembre de 2011 (n1 = 419). Grupo control: muestra de pacientes entre 18 y 65 años intervenidos entre octubre de 2001 y septiembre de 2003 (n2 = 237). Variables de estudio en ambas muestras: 1) porcentaje de exploraciones realizadas como apoyo radiológico al diagnóstico de la apendicitis; 2) sensibilidad y valor predictivo positivo (VPP) de ECO y TAC; 3) tasa de cirugías en blanco y con diagnósticos diferentes de AA. Análisis estadístico: software SPSS, con test de la χ2, aceptando como significativos niveles de p < 0,05 y calculando la odds ratio (OR) con su intervalo de confianza al 95% (IC95%). RESULTADOS: Ambas muestras fueron homogéneas en cuanto a edad, género o porcentaje de localizaciones atípicas y formas evolucionadas. El número de exploraciones solicitadas durante el periodo de estudio fue significativamente mayor que en el control (78,8 vs. 30,4%; p < 0,000). La sensibilidad de la TAC fue superior a la de la ECO (97 vs. 86%), aunque ambas pruebas presentaron valores similares de VPP (92 vs. 94%). El porcentaje de intervenciones con diagnóstico certero de AA fue significativamente mayor en el grupo de estudio (94,5 vs. 88,6%; p < 0,006; OR: 2,2; IC95% 1,25-4). CONCLUSIÓN: El incremento de solicitudes de apoyo radiológico al diagnóstico de AA conlleva un significativo aumento de intervenciones con diagnóstico certero

OBJECTIVE: The aim of this study is to analyze the increasing need of radiological support in the diagnosis of acute appendicitis (AA), the clinical repercussions associated, and the parameters of diagnostic accuracy of ultrasound and computed tomography (CT) scan for AA. MATERIAL AND METHODS: Observational and analytical study. Cohort, patients operated on for suspected AA at a tertiary referral hospital. Pregnancy and < 14 years were exclusion criteria. Study group: January 2010-December 2011 (n1 = 419). CONTROL GROUP: set of patients aged 18 to 65 years old operated between October 2001-September 2003 (n2 = 237). Variables analyzed in both groups: 1) percentage of radiological support for diagnosis of acute appendicitis; 2) sensitivity and positive predictive value (PPV) of ultrasound and CT scan; 3) rate of surgical explorations with negative result or with diagnosis other than acute appendicitis. Statistical analysis: SPSS software, χ2 test, statistical significance accepted with P<.05, 95% confidence interval (95% CI) for the odds ratio (OR). RESULTS: Age, gender, percentage of atypical locations and gangrenous/perforated episodes were similar in both groups. The number of radiological examinations needed for diagnosis was significantly higher in the study group (78.8% vs. 30.4%, P < .0,000). Sensitivity was significantly superior for CT than for ultrasound scan (97% vs. 86%), but PPV was similar in both tests (92% vs. 94%). Surgical exploration percent values with diagnosis of acute appendicitis was significantly higher in the study group (94.5% vs. 88.6%; P < .006, OR 2.2; CI 95% 1.25-4). CONCLUSIONS: CT and ultrasound scan are excellent diagnostic tools for acute appendicitis, and have contributed to a significant increase in surgical explorations with correct diagnosis

[Radiological support for diagnosis of acute appendicitis: use, effectiveness and clinical repercussions]. / Empleo, eficacia y repercusión clínica del apoyo radiológico al diagnóstico de la apendicitis aguda.

OBJECTIVE: The aim of this study is to analyze the increasing need of radiological support in the diagnosis of acute appendicitis (AA), the clinical repercussions associated, and the parameters of diagnostic accuracy of ultrasound and computed tomography (CT) scan for AA. MATERIAL AND METHODS: Observational and analytical study. Cohort, patients operated on for suspected AA at a tertiary referral hospital. Pregnancy and <14 years were exclusion criteria. STUDY GROUP: January 2010-December 2011 (n1=419). CONTROL GROUP: set of patients aged 18 to 65 years old operated between October 2001-September 2003 (n2=237). Variables analyzed in both groups: 1) percentage of radiological support for diagnosis of acute appendicitis; 2) sensitivity and positive predictive value (PPV) of ultrasound and CT scan; 3) rate of surgical explorations with negative result or with diagnosis other than acute appendicitis. STATISTICAL ANALYSIS: SPSS software, χ(2) test, statistical significance accepted with P<.05, 95% confidence interval (95% CI) for the odds ratio (OR). RESULTS: Age, gender, percentage of atypical locations and gangrenous/perforated episodes were similar in both groups. The number of radiological examinations needed for diagnosis was significantly higher in the study group (78.8% vs. 30.4%, P<.0,000). Sensitivity was significantly superior for CT than for ultrasound scan (97% vs. 86%), but PPV was similar in both tests (92% vs. 94%). Surgical exploration percent values with diagnosis of acute appendicitis was significantly higher in the study group (94.5% vs. 88.6%; P<.006, OR 2.2; CI 95% 1.25-4). CONCLUSIONS: CT and ultrasound scan are excellent diagnostic tools for acute appendicitis, and have contributed to a significant increase in surgical explorations with correct diagnosis.

Posterior approach (Kraske procedure) for surgical treatment of presacral tumors.

Presacral tumors are rare, but can comprise a great variety of histological types. Congenital tumors are the most common. Once the diagnosis is established, surgical resection is essential because of the potential for malignancy or infection. Previous biopsy is not necessary or may be even harmful. To decide the best surgical approach (abdominal, sacral or combined) an individual and multidisciplinary analysis must be carried out. We report three cases of cystic presacral masses in which a posterior approach (Kraske procedure) enabled complete resection, the only way to decrease local recurrence. All patients had a satisfactory recovery. A brief overview of retrorectal tumors is presented, focusing on classification, clinical presentation, diagnosis and surgical management.

[Development and evolution of laparoscopic adrenalectomy in an specialized team: from the beginning to the outpatient setting]. / Desarrollo y evolución de la suprarrenalectomía laparoscópica en una unidad especializada: de los casos iniciales al hospital de día.

BACKGROUND: After the first reports in 1992, laparoscopic adrenalectomy (LA) has evolved technically until becoming the standard approach for the treatment of most of the adrenal gland diseases. MATERIAL AND METHODS: Retrospective and descriptive study of 67 patients who underwent 68 LA between January-1998 and December-2008 in the Laparoscopic Surgery Unit of the General and Digestive Surgery Service in a third level hospital (only one case of bilateral LA). The group was divided in 2 periods, P-1 (1998-2003, 22 cases) and P-2 (2004-2008, 45 cases), which have been compared to evaluate the evolution of the LA technique. RESULTS: Indications for LA were: 19 incidentalomas, 19 primary hyperaldosteronism, 18 pheocromocitoms, 5 cases of symptomatic and non-functioning adrenal masses, 4 Cushing adenomas and 2 metastases. There was no mortality, only 4 patients had minor complications (6%) and conversion rate was only 3% (2 cases). Mean size of adrenal glands resected was 3.83 cm and the mean operative time was 86 minutes. Mean postoperative hospital stay was 3 days and in P-2 seventeen patients were discharged on an outpatient basis (hospital stay less than 23 hours). CONCLUSIONS: In our experience, LA for the treatment of adrenal diseases has shown to be safe, effective and reproducible with low complications and excellent tolerance by patients. When the learning curve is overcome, hospital stay and operative time clearly decrease. As a consequence, LA can be planned in selected cases as outpatient surgery with good results.

Desarrollo y evolución de la suprarrenalectomía laparoscópica en una unidad especializada: de los casos iniciales al hospital de día / Development and evolution of laparoscopic adrenalectomy in an specialized team: from the beginning to the outpatient setting

Introducción: Desde su descripción inicial en 1992, la suprarrenalectomía laparoscópica (SL) ha evolucionado como técnica hasta convertirse en el abordaje estándar para el tratamiento de la patología quirúrgica adrenal.Material y métodos: Realizamos un estudio observacional descriptivo de 67 pacientes sometidos a 68 SL entre enero de 1998 y diciembre de 2008 en la unidad de cirugía laparoscópica del servicio de cirugía general y digestiva de un hospital de tercer nivel (sólo 1 caso de SL bilateral). Igualmente, la serie se ha dividido en dos periodos: P-1 (1998-2003, 22 casos) y P-2 (2004-2008, 45 casos), que se han comparado para valorar la evolución de la técnica.Resultados: Las indicaciones para la realización de SL fueron: 19 incidentalomas, 19 aldosteronomas, 18 feocromocitomas, 5 casos de masa adrenal no funcionante, 4 adenomas de Cushing y 2 metástasis. La mortalidad fue nula, sólo 4 pacientes presentaron complicaciones menores (6%) y la conversión sólo fue necesaria en 2 casos (3%). El tamaño medio glandular de nuestra serie fue de 3,83 cm y la duración media de la cirugía, 86 min. La estancia hospitalaria media fue de 3 días, y en el P-2 hasta 17 pacientes fueron dados de alta en régimen de cirugía mayor ambulatoria (menos de 23 h de estancia). Conclusiones: En nuestra serie, el abordaje laparoscópico para el tratamiento de la patología quirúrgica suprarrenal se ha demostrado seguro, efectivo, reproducible, con escasas complicaciones y muy bien tolerado por los pacientes. Cuando se supera la curva de aprendizaje, el tiempo quirúrgico y la estancia hospitalaria se reducen, lo cual permite, en casos seleccionados, plantear esta técnica en régimen de cirugía mayor ambulatoria (AU)

Background: After the first reports in 1992, laparoscopic adrenalectomy (LA) has evolved technically until becoming the standard approach for the treatment of most of the adrenal gland diseases.Material y methods: Retrospective and descriptive study of 67 patients who underwent 68 LA between January-1998 and December-2008 in the Laparoscopic Surgery Unit of the General and Digestive Surgery Service in a third level hospital (only one case of bilateral LA). The group was divided in 2 periods, P-1 (1998-2003, 22 cases) and P-2 (2004-2008, 45 cases), which have been compared to evaluate the evolution of the LA technique.Results: Indications for LA were: 19 incidentalomas, 19 primary hyperaldosteronism, 18 pheocromocitoms, 5 cases of symptomatic and non-functioning adrenal masses, 4 Cushing adenomas and 2 metastases. There was no mortality, only 4 patients had minor complications (6%) and conversion rate was only 3% (2 cases). Mean size of adrenal glands resected was 3,83 cm and the mean operative time was 86 minutes. Mean postoperative hospital stay was 3 days and in P-2 seventeen patients were discharged on an outpatient basis (hospital stay less than 23 hours).Conclusions: in our experience, LA for the treatment of adrenal diseases has shown to be safe, effective and reproducible with low complications and excellent tolerance by patients. When the learning curve is overcome, hospital stay and operative time clearly decrease. As a consequence, LA can be planned in selected cases as outpatient surgery with good results (AU)