Proyecto DUCMA 2.0. Puesta al día sobre la situación actual de las unidades de Cirugía Mayor Ambulatoria en España / DUCMA 2.0 project: Update on the current situation of the outpatient surgery units in Spain

Introducción: La cirugía mayor ambulatoria (CMA) es un sistema de gestión seguro y eficiente para resolver los problemas quirúrgicos, pero su implantación y desarrollo ha sido variable. El objetivo de este estudio es describir las características, la estructura y el funcionamiento de las unidades de Cirugía Mayor Ambulatoria (UCMA) en España. Métodos: Estudio observacional, transversal, multicéntrico basado en una encuesta electrónica, con recogida de datos entre abril y septiembre de 2022. Resultados: En total, 90 UCMA completaron la encuesta. La media del índice de ambulatorización (IA) global es de 63%. Más de la mitad de las UCMA (52%) son de tipo integrado. La mitad las unidades imparte formación para médicos (51%) y personal de enfermería (55%). Los indicadores de calidad más utilizados son la tasa de suspensiones (87%) y de ingresos no previstos (80%). Conclusiones: Se necesita mayor coordinación entre administraciones para obtener datos fiables. Asimismo, se deben implementar sistemas de gestión de calidad en las unidades y desarrollar herramientas para la formación adecuada de los profesionales implicados.(AU)

Introduction: Ambulatory surgery is a safe and efficient management system to solve surgical problems, but its implementation and development has been variable. The aim of this study is to describe the characteristics, structure and functioning of ambulatory surgery units (ASU) in Spain. Methods: Multicenter, cross-sectional, observational study based on an electronic survey, with data collection between April and September 2022. Results: In total, 90 ASUs completed the survey. The mean overall ambulatory index is 63%. More than half of the ASUs (52%) are integrated units. Around half of the units provide training for physicians (51%) and for nurses (55%). The most frequently used quality indicators are suspension rate (87%) and the rate of unplanned admissions (80%). Conclusions: Greater coordination between administrations is needed to obtain reliable data. It is also necessary to implement quality management systems in the different units, as well as to develop tools for the adequate training of the professionals involved.(AU)

DUCMA 2.0 project: Update on the current situation of the outpatient surgery units in Spain.

INTRODUCTION: Ambulatory surgery is a safe and efficient management system to solve surgical problems, but its implementation and development has been variable. The aim of this study is to describe the characteristics, structure and functioning of ambulatory surgery units (ASU) in Spain. METHODS: Multicenter, cross-sectional, observational study based on an electronic survey, with data collection between April and September 2022. RESULTS: In total, 90 ASUs completed the survey. The mean overall ambulatory index is 63%. More than half of the ASUs (52%) are integrated units. Around half of the units provide training for physicians (51%) and for nurses (55%). The most frequently used quality indicators are suspension rate (87%) and the rate of unplanned admissions (80%). CONCLUSIONS: Greater coordination between administrations is needed to obtain reliable data. It is also necessary to implement quality management systems in the different units, as well as to develop tools for the adequate training of the professionals involved.

Formación en cirugía mayor ambulatoria. Una asignatura pendiente en nuestro país / Training in ambulatory surgery. A pending subject in our country

La implantación y generalización a nivel mundial de la cirugía mayor ambulatoria (CMA) es una realidad patente en la actualidad y se espera un crecimiento progresivo de la misma a corto plazo, pero esta globalización también puede afectar de forma negativa a la docencia y el entrenamiento de los futuros médicos y aquellos que están en formación, si no se estandariza y regula, ya que una parte importante de la gestión de la patología más frecuente subsidiaria de ser realizada en CMA, acaba fuera de los circuitos del hospital donde el médico residente se está formando. (AU)

The implantation and generalization of ambulatory surgery worldwide is currently a clear reality and its progressive growth is expected in the short term, but this globalization can also negatively affect the teaching and training of future doctors and those who are in training, if it is not standardized and regulated, since an important part of the management of the most common pathology that could be performed in ambulatory surgery finish outside the circuits of the hospital where the resident doctor is training. (AU)

Training in ambulatory surgery. A pending subject in our country.

The implementation and generalized use of Ambulatory Surgery worldwide is currently a clear reality. Its progressive growth is expected in the short term, but this globalization can also negatively affect the education and training of future doctors, as well as those who are being trained now, if it is not standardized and regulated, since a significant part of the management of the most common pathology that could be performed in Ambulatory Surgery is completed outside the training circuits of hospitals where resident doctors are trained.

Estudio observacional retrospectivo correlacionando las fracturas traumáticas de pelvis y sus lesiones asociadas según la clasificación de Tile / Retrospective observational study correlating traumatic pelvic fractures and their associated injuries according to the Tile classification

Introducción: Las fracturas de pelvis por traumatismo de alta energía presentan un alto riesgo de lesiones asociadas que comprometen el pronóstico funcional y vital. El objetivo de este estudio fue analizar la correlación entre las fracturas traumáticas de pelvis y sus lesiones asociadas según la clasificación de Tile. Métodos: Estudio observacional retrospectivo de pacientes que sufrieron fracturas traumáticas de pelvis (tipo A, B o C de la clasificación de Tile) con lesiones asociadas concomitantes, analizando los niveles de hemoglobina, entre 6/2013 y 1/2016. Resultados: Se incluyeron un total de 42 pacientes; de ellos, el 69% (n=29) eran varones, la edad media era de 48 años. El 45% (n=19) sufrió accidentes de tránsito; el 26,2% (n=11) caídas. Hubo una proporción diferente en las lesiones pélvicas: Tile A (n=15, 35,7%), B (n=20, 47,6%) y C (n=7, 16,6%) de los casos. El 54,8% (n=23) fueron intervenidos quirúrgicamente, el 21,4% (n=9) necesitó fijación externa. Se encontraron diferencias significativas entre las fracturas Tile A y de escápula (p=0,032), y las Tile B con fracturas sacras (p=0,033), y con lesiones viscerales (p=0,049), mientras que existía solo una asociación sin significación estadística entre Tile C y fracturas costales. El 61,9% (n=26) necesitó transfusión de sangre; el 9,5% (n=4) presentó shock hipovolémico. Conclusiones: Las fracturas pélvicas Tile A se asociaron a las fracturas de escápula, y las Tile B con fracturas transforaminales del sacro y con lesiones viscerales (pulmonares, hepáticas y génito-urinarias). El número reducido de fracturas Tile C no permite realizar asociación estadística con ninguna enfermedad, si bien son las que presentan mayor alteración hemodinámica y lesiones torácicas. (AU)

Introduction: Pelvic fractures due to high energy trauma present a high risk of associated injuries that compromise the functional and vital prognosis of the patients. The objective of this study was to analyze the relationship between traumatic pelvic fractures and their associated injuries according to the Tile classification. Methods: Retrospective observational study of patients who suffered traumatic pelvic fractures (Type A, B or C of the Tile classification) with concomitant associated injuries, analyzing hemoglobin levels, between 6/2013 and 1/2016. Results: A total of 42 patients were included; of those 69% (n=29) were males, mean age was 48 years. 45% (n=19) suffered traffic accidents and 26.2% (n=11) falls. There was a different proportion in pelvic injuries: Tile A (n=15, 35.7%), B (n=20, 47.6%), and C (n=7, 16.6%) of cases. 54.8% (n=23) underwent surgery, 21.4% (n=9) needed temporary or definitive external fixation. Significant differences were found between Tile A type and scapula fractures (P=.032), and Tile B with sacral fractures (P=.033) and visceral injuries (P=.049), while there is a tendency without a statistical significal between Tile C and costal fractures. 61.9% (n=26) needed blood transfusion; 9.5% (n=4) presented hypovolemic shock. Conclusions: Tile A pelvic fractures were associated with scapular fractures, and Tile B with transforaminal fractures of the sacrum and with visceral injuries (lungs, liver and genitourinary). The small number of Tile C prevent us to confirm an association with any pathology, although they are the ones which presnt more hemodynamically instability and thoracic injuries. (AU)

Retrospective observational study correlating traumatic pelvic fractures and their associated injuries according to the Tile classification.

INTRODUCTION: Pelvic fractures due to high energy trauma present a high risk of associated injuries that compromise the functional and vital prognosis of the patients. The objective of this study was to analyze the relationship between traumatic pelvic fractures and their associated injuries according to the Tile classification. METHODS: Retrospective observational study of patients who suffered traumatic pelvic fractures (Type A, B or C of the Tile classification) with concomitant associated injuries, analyzing hemoglobin levels, between 6/2013 and 1/2016. RESULTS: A total of 42 patients were included; of those 69% (n = 29) were males, mean age was 48 years. 45% (n = 19) suffered traffic accidents and 26.2% (n = 11) falls. There was a different proportion in pelvic injuries: Tile A (n = 15, 35.7%), B (n = 20, 47.6%), and C (n = 7, 16.6%) of cases. 54.8% (n = 23) underwent surgery, 21.4% (n = 9) needed temporary or definitive external fixation. Significant differences were found between Tile A type and scapula fractures (P = .032), and Tile B with sacral fractures (P = .033) and visceral injuries (P = .049), while there is a tendency without a statistical significal between Tile C and costal fractures. 61.9% (n = 26) needed blood transfusion; 9.5% (n = 4) presented hypovolemic shock. CONCLUSIONS: Tile A pelvic fractures were associated with scapular fractures, and Tile B with transforaminal fractures of the sacrum and with visceral injuries (lungs, liver and genitourinary). The small number of Tile C prevent us to confirm an association with any pathology, although they are the ones which presnt more hemodynamically instability and thoracic injuries.

Early laparoscopic cholecystectomy in oldest-old patients: a propensity score matched analysis of a nationwide registry.

The role of early laparoscopic cholecystectomy (ELC) in "oldest-old" patients with acute calculous cholecystitis (ACC) is still controversial. The aim of this study is to assess the safety of ELC for ACC in ≥ 85-year-old patients. Multicentric retrospective study that analysed data of patients who underwent ELC for ACC between 2013 and 2018. Patients ≥ 85-year-old (oldest-old patients) were compared with younger patients, before and after propensity score matching (PSM). The main outcomes were mortality, post-operative complications, length of stay (LOS), and readmissions. The study included 1670 patients. The unmatched comparison revealed a selection bias towards the oldest-old group, which was associated with higher Charlson Comorbidity Index (5 vs 1, p < 0.001), more ASA III/IV subjects (54.2% vs 19.3%, p < 0.001), class II/III ACC (80.1% vs 69.1%, p = 0.016) and higher Chole-Risk Score (p > 0.001). The oldest-old also required more conversion to open surgery (20% vs 10.3%, p = 0.005). Postoperatively, they had a higher 90-day mortality rate (7.6% vs 1%, p < 0.001), more total complications (40.6% vs 17.7%, p < 0.001), complications ≥ IIIa Clavien-Dindo (14.4% vs 5.8%, p = 0.002), longer LOS (6 vs 5 days, p < 0.001), and more readmissions (6.6% vs 2.6%, p < 0.001). After PSM (n = 206), the two groups were comparable in terms of baseline characteristics and intraoperative outcomes. No differences were observed in post-operative complications; bile leak; incisional, intrabdominal, urinary or respiratory tract infections; LOS or readmissions. In the oldest-old, ELC for ACC is still associated with significant morbidity and mortality. However, it seems to be safe in selected patients. Therefore, age itself should not be regarded as a contraindication to ELC for ACC.

Consensus of the ambulatory surgery commite section of the Spanish Association of Surgeons on the role of ambulatory surgery in the SARS-CoV-2 pandemic.

The current situation of the SARS-CoV-2 pandemic has paralyzed non-urgent and/or oncological surgery in many hospitals in our country with what it means for the health of citizens who are awaiting a surgical procedure. Outpatient Surgery can afford more than 85% of the surgical procedures that are performed in a surgical department and is presented as a feasible and safe alternative at the present time since it does not require admission and decreases clearly the risk of infection. In addition, it is the tool that should be generalized to solve the accumulation of patients on the waiting list that the pandemic is generating, so it seems appropriate that the Ambulatory Surgery section of the Spanish Association of Surgeons present a series of recommendations for the implementation of outpatient surgery in these exceptional circumstances that we have to live.

Consenso de la sección de cirugía mayor ambulatoria de la Asociación Española de Cirujanos sobre el papel de la cirugía mayor ambulatoria en la pandemia SARS-CoV-2 / Consensus of the ambulatory surgery commite section of the Spanish Association of Surgeons on the role of ambulatory surgery in the SARS-CoV-2 pandemic

La situación actual de la pandemia por SARS-CoV-2 tiene paralizada la cirugía no urgente y/u oncológica en muchos hospitales de nuestro país con lo que esto conlleva para la salud de los ciudadanos que están pendientes de una intervención quirúrgica. La cirugía mayor ambulatoria puede abarcar en su cartera de servicios más del 85% de los procedimientos quirúrgicos que se realizan en un servicio de cirugía y se presenta como una alternativa factible y segura en el momento actual ya que no requiere camas de ingreso y disminuye claramente el riesgo de infección. Además, es la herramienta que debería generalizarse para solucionar la acumulación de pacientes en lista de espera que la pandemia está generando, por lo que parece oportuno que desde la sección de Cirugía Mayor Ambulatoria de la Asociación Española de Cirujanos se presente una serie de recomendaciones para la implementación de la misma en estas circunstancias excepcionales que nos toca vivir.(AU)

The current situation of the SARS-CoV-2 pandemic has paralyzed non-urgent and/or oncological surgery in many hospitals in our country with what it means for the health of citizens who are awaiting a surgical procedure. Outpatient Surgery can afford more than 85% of the surgical procedures that are performed in a surgical department and is presented as a feasible and safe alternative at the present time since it does not require admission and decreases clearly the risk of infection. In addition, it is the tool that should be generalized to solve the accumulation of patients on the waiting list that the pandemic is generating, so it seems appropriate that the Ambulatory Surgery section of the Spanish Association of Surgeons present a series of recommendations for the implementation of outpatient surgery in these exceptional circumstances that we have to live.(AU)

Reacreditación o recertificación de los cirujanos generales en España: esa es la cuestión. Resultados de una encuesta nacional / Reaccreditation or recertification of general surgeons in Spain: That's the question. Results of a national survey

Introducción: La Ley de Ordenación de las Profesiones Sanitarias (LOPS) indica que los profesionales sanitarios realizarán a lo largo de su vida profesional una formación continuada y acreditarán regularmente su competencia profesional. El objetivo del estudio ha sido realizar una encuesta nacional para conocer la opinión de los cirujanos españoles y así poder preparar un proyecto de recertificación por la Asociación Española de Cirujanos (AEC).Métodos: Estudio observacional transversal efectuado en junio-julio de 2020 mediante una encuesta remitida a los miembros de la AEC. Resultados: La encuesta tuvo un total de 1.230 visitas y una tasa global de finalización de 784 respuestas (67,3%). El 69,6% desconocían las previsiones de la LOPS, el 83,4% no conocían iniciativas similares en otras especialidades y el 95,5% coincidían en demandar una información adecuada. El 71,4% la creían necesaria, pero solo el 57% opinaban que debería ser obligatoria. El 82,9% estarían de acuerdo que debería ser regulada mediante un procedimiento oficial objetivo y previsible. Conclusiones: El concepto de reacreditación no es bien conocido en nuestra especialidad, y en vista de los resultados obtenidos parece necesaria una información adecuada y fiable. Por ello sería pertinente proponer por la AEC un proyecto específico de evaluación de actividades y competencias(AU)

Introduction: The Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons (AEC). Methods: Cross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the AEC. Results: The survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure. Conclusions: he concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the AEC a specific project to assess activities and skills(AU)

Reaccreditation or recertification of general surgeons in Spain: That's the question. Results of a national survey.

INTRODUCTION: The Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons. METHODS: Cross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the Spanish Association of Surgeons. RESULTS: The survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure. CONCLUSIONS: The concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the A.E.C. a specific project to assess activities and skills.

[Consensus of the ambulatory surgery commite section of the Spanish Association of Surgeons on the role of ambulatory surgery in the SARS-CoV-2 pandemic]. / Consenso de la sección de cirugía mayor ambulatoria de la Asociación Española de Cirujanos sobre el papel de la cirugía mayor ambulatoria en la pandemia SARS-CoV-2.

The current situation of the SARS-CoV-2 pandemic has paralyzed non-urgent and/or oncological surgery in many hospitals in our country with what it means for the health of citizens who are awaiting a surgical procedure. Outpatient Surgery can afford more than 85% of the surgical procedures that are performed in a surgical department and is presented as a feasible and safe alternative at the present time since it does not require admission and decreases clearly the risk of infection. In addition, it is the tool that should be generalized to solve the accumulation of patients on the waiting list that the pandemic is generating, so it seems appropriate that the Ambulatory Surgery section of the Spanish Association of Surgeons present a series of recommendations for the implementation of outpatient surgery in these exceptional circumstances that we have to live.

Reaccreditation or recertification of general surgeons in Spain: That's the question. Results of a national survey. / Reacreditación o recertificación de los cirujanos generales en España: esa es la cuestión. Resultados de una encuesta nacional.

INTRODUCTION: The Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons (AEC). METHODS: Cross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the AEC. RESULTS: The survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure. CONCLUSIONS: The concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the AEC a specific project to assess activities and skills.

Laparoscopic cholecystectomy for acute cholecystitis: is the surgery still safe beyond the 7-day barrier? A multicentric observational study.

Timing for early laparoscopic cholecystectomy (ELC) in patients with acute calculous cholecystitis (ACC) is still controversial. This study assesses ELC for ACC with delayed presentation, according to hospital volume. Multicentric retrospective analysis of 1868 ELC. Patients were classified into two groups according to the timing of surgery from clinical onset and centre volume. Group 1 (G1) within the first 7 days, group 2 (G2) beyond that. Then centres were classified in low volume centres (LVC) and higher volume centres (HVC) according to the number of ELC performed per year. Overall, G2 showed increased conversion rate (17.7% vs 10.7%; p = 0.004), intraoperative complications (7.3% vs 2.9%; p = 0.001); postoperative haemorrhage (3.6% vs 0.8%; p < 0.001), infections (16.6% vs 9.3%; p = 0.003) and global complications (27.6% vs 19.8%; p = 0.011). HVC in comparison with LVC presented decreased conversion rate (17.1% vs 7.6%; p < 0.001), intraoperative bleeding (2.1% vs 1%; p = 0.047), postoperative bile leakage (4.1% vs 2.1%; p = 0.011), infectious (13.7% vs 7.5%; p < 0.001) and global complications (25.7% vs 17.1%; p < 0.001). HVC did not show an increase in any of the above-mentioned outcomes when G1 and G2 were compared. ELC must be indicated cautiously in patients with ACC and more than 1 week of symptom duration. It should be performed in centres with sufficient experience in the management of this disease.

Respuesta al artículo: La concentración de tratamientos puede mejorar los resultados en cirugía compleja del cáncer / Response to the article: Concentration of treatments can improve clinical results in complex cancer surgery

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Lymph risk factors and prognostic impact of lateral-aortic lymphadenectomy in ovarian peritoneal carcinomatosis / Factores de riesgo ganglionar e impacto pronóstico de la linfadenectomia lumboaortica en carcinomatosis peritoneal ovárica

Background: Ovarian carcinoma is going with peritoneal dissemination in more than a half of the cases at diagnosis. Lymph node involvement is a poor prognostic factor limiting survival. Lumboaortic lymphadenectomy is a part of the therapeutic armamentarium, although there are discrepancies in the selection of patients and prognostic impact. We evaluate some nodal infiltration risk factors for this disease and lymphadenectomy prognostic influence. Material and methods: A retrospective study of 93 patients diagnosed with stage III ovarian cancer between 2006 and 2012. A total of 52 (55.9%) patients were selected to undergo a complete or optimal cytoreduction. Two groups were established according to absence or presence of retroperitoneal lymph nodes during preoperative diagnosis, to assess the objectives of this study. Results: Statistical analysis for clinical and histopathological variables determined prealbumin (p = 0'027) and Ca 125 (p = 0'048) were associated with the risk of nodal infiltration. No significant value was seen in the parameters related to the peritoneal spread of the cancer. Lumboaortic lymphadenectomy improved disease-free survival (25'7 ± 21'4 vs 35'6 ± 22 months) with statistical significance (p = 0'033) but did not appear to achieve outstanding changes in overall survival (39'7 ± 20'1 vs 41'9 ± 20'8 months). Conclusions: A poor nutritional status and high Ca 125 could be predictive factors of lymph node involvement. The performance of a systematic lumboaortic lymphadenectomy seems to increase disease-free survival in association with a properly debulking and absence of severe postoperative complications. A broader recruitment of patients will be needed to know a more accurate pattern of lymph node disease in order to carry out a selective indication for lymphadenectomy

Introducción: el cáncer de ovario se acompaña de diseminación peritoneal en más de la mitad de los casos al diagnóstico. La afectación ganglionar es un factor de mal pronóstico que limita su supervivencia. La linfadenectomía lumboaórtica forma parte del arsenal terapéutico aunque existen discrepancias en la selección de pacientes y su impacto pronóstico. Se pretende evaluar algunos factores de riesgo de infiltración nodal para esta enfermedad y la influencia pronóstica de dicha linfadenectomía. Material y métodos: estudio retrospectivo de 93 pacientes diagnosticados de cáncer ovárico en estadio III entre 2006 y 2012. Fueron seleccionadas 52 (55'9%) enfermas que se beneficiaron de una citorreducción completa u óptima, estableciéndose dos grupos ante la ausencia o presencia de adenopatías retroperitoneales durante el diagnóstico preoperatorio, para contrastar los objetivos del estudio. Resultados: el análisis estadístico de variables clínicas e histopatológicas determinó relación de la prealbúmina (p = 0'027) y Ca 125 (p = 0'048) con el riesgo de infiltración nodal. No se apreció valor significativo en los parámetros relativos a la extensión peritoneal del cáncer. La linfadenectomía lumboaórtica mejoró la supervivencia libre de enfermedad (25'7 ± 21.4 vs 35'6 ± 22 meses) con relevancia estadística (p = 0'033) pero no presentó grandes variaciones en la supervivencia global (39'7 ± 20'1 vs 41'9 ± 20'8 meses). Conclusiones: un estado nutricional deteriorado y un Ca 125 elevado podrían ser factores predictivos de afectación ganglionar. La realización de una linfadenectomía lumboaórtica sistemática parece incrementar la supervivencia libre de enfermedad ante una citorreducción adecuada y ausencia de complicaciones postquirúrgicas graves. Se necesitará un mayor reclutamiento de pacientes para conocer con más exactitud el patrón de enfermedad ganglionar a efectos de una indicación de linfadenectomía más selectiva

La simulación como modelo de enseñanza en cirugía / Simulation as a surgical teaching model

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