Carcinoma de vías biliares intrahepáticas: análisis de defunciones según sexo, grupo etario y regiones en Chile entre 2017-2021 / Intrahepatic bile duct carcinoma: analysis of deaths according to sex, age group, and regions in Chile between 2017-2021

Introducción: el colangiocarcinoma intrahepático es un cáncer agresivo de células epiteliales de los conductos biliares intrahepáticos y su desarrollo se asocia a inflamación crónica del árbol biliar. En Chile, su epidemiología es limitada y el presente estudio tiene por objetivo describir su tasa de mortalidad. Métodos: se realizó un estudio descriptivo observacional transversal y ecológico de las defunciones por carcinoma de vías biliares en Chile durante 2017 y 2021 según sexo, grupo etario y región de residencia. Resultados: la tasa de mortalidad nacional de personas mayores a 20 años durante el periodo estudiado fue de 1,56 por cada 100.000 habitantes. La tasa de mortalidad más alta del sexo masculino se observó en 2020, siendo de 2,61. La mayor mortalidad se encontró en personas mayores a 80 años en el sexo masculino con una tasa de 24,38. A nivel regional, en Magallanes se observó la mayor tasa de mortalidad con 5,66, mientras que Tarapacá presentó la menor tasa con un valor de 0,96. Finalmente, el índice de Swaroop fue igual o mayor al 92% en todas las regiones del país. Conclusión: la mayor mortalidad por colangiocarcinoma intrahepático se presenta en personas de edad avanzada y de sexo masculino. Interesantemente la mayor mortalidad por esta causa se concentra en la zona sur de Chile. Dada la magnitud del problema que representa esta enfermedad en la salud pública nacional es que futuros estudios son necesarios para establecer medidas de prevención y/o tratamiento de esta enfermedad.

Introduction: intrahepatic cholangiocarcinoma is an aggressive cancer of epithelial cells of the intrahepatic bile ducts, and its deve-lopment is associated with chronic inflammation of the biliary tree. In Chile, its epidemiology is limited, and the present study aims to describe its mortality rate. Methods: a descriptive, cross-sectional, observational, and ecological study of deaths from bile duct carcinoma in Chile between 2017 and 2021 was performed according to sex, age group, and region of residence. Results: the national mortality rate of people over 20 years old during the study period was 1.56 per 100,000 inhabitants. The highest mortality rate for the male sex was observed in 2020, with a value of 2.61. In turn, the highest mortality rate was found in people over 80 years old in the male sex, with a rate value of 24.38. On a regional level, Magallanes had the highest mortality rate, with a rate value of 5.66, while Tarapacá had the lowest rate, with a value of 0.96. Finally, Swaroop's index was equal to or greater than 92% in all regions of the country. Conclusion: the highest mortality from intrahepatic cholangiocarcinoma occurs in older people and males. Interestingly, the highest mortality from this cause is concentrated in the southern zone of Chile. Given the magnitude of the problem that this disease represents for national public health, future studies are necessary to establish both prevention measures and treatments

Right Hepatic and Portal Vein Embolization before Right Hepatectomy for Colorectal Cancer Liver Metastases.

Colon cancer has had a significant increase in its incidence in recent years. Many of the cases are diagnosed late; it is not unusual that a large number of cases present metastatic disease at the time of diagnosis, and the liver is the main organ where these lesions occur. Surgical approach to this condition has undergone many advances which have allowed a better approach to them. Local techniques such as embolization have gained momentum in recent years and are a great help to the surgical planning. We present the case of a 72-year-old female patient diagnosed with colorectal cancer and metastatic disease. Multiple liver tumors were demonstrated by imaging studies. A staged resection of the primary tumor and the metastatic hepatic tumors was planned. It was decided to perform an embolization of the hepatic artery to cause hypertrophy of the left lobe before the second stage of the surgical approach with good clinical and laboratorial findings after the surgery. Follow-up with adjuvant chemotherapy, imaging studies and tumor markers is planned. Several publications state that surgical approach of metastatic disease is still controversial and that decisions should be made under the context of each patient. Many techniques have shown good results; embolization of the hepatic tumors has a good outcome in the survival rate in selected patients. Hepatic volume and future liver remnant should be always assessed with imaging studies. Each case has to be individualized for the approach of the metastatic disease, always in a coordinated teamwork for maximum benefit of the patient.

Bleeding hepatocellular adenoma: historical series and outcomes / Adenoma hepatocelular sangrante: série histórica e desfechos

ABSTRACT Introduction: hepatocellular adenoma - AHC - is a rare benign neoplasm of the liver more prevalent in women at reproductive age and its main complication is hemorrhage. In the literature, case series addressing this complication are limited. Methods: between 2010 and 2022, 12 cases of bleeding AHC were attended in a high-complexity university hospital in southern Brazil, whose medical records were retrospectively evaluated. Results: all patients were female, with a mean age of 32 years and a BMI of 33kg/m2. The use of oral contraceptives was identified in half of the sample and also half of the patients had a single lesion. The mean diameter of the largest lesion was 9.60cm and the largest lesion was responsible for bleeding in all cases. The presence of hemoperitoneum was documented in 33% of the patients and their age was significantly higher than the patients who did not have hemoperitoneum - 38 vs 30 years, respectively. Surgical resection of the bleeding lesion was performed in 50% of the patients and the median number of days between bleeding and resection was 27 days. In only one case, embolization was used. The relation between ingrowth of the lesions and the time, in months, was not obtained in this study. Conclusion: it is concluded that the bleeding AHC of the present series shows epidemiological agreement with the literature and may suggest that older patients trend to have hemoperitoneum more frequently, a fact that should be investigated in further studies.

RESUMO Introdução: o Adenoma Hepatocelular - AHC - é uma neoplasia benigna rara do fígado associada a mulheres com idade reprodutiva. Sua principal complicação é o sangramento,mas as séries de casos direcionadas a esta intercorrência são limitadas. Métodos: entre os anos de 2010 e 2022 foram registrados 12 casos de AHC sangrante em um hospital universitário de alta complexidade no sul do Brasil, cujos prontuários foram retrospectivamente avaliados. Resultados: todos os pacientes eram do sexo feminino, com média de idade de 32 anos e de IMC de 33kg/m2. O uso de anticoncepcionais foi identificado em metade da amostra e também metade das pacientes apresentava lesão única. O diâmetro médio da maior lesão foi de 9,60cm e a maior lesão foi responsável pelo sangramento em todos os casos. Hemoperitôneo foi documentado em 33% das pacientes e a idade destas foi significativamente maior do que as pacientes que não apresentaram hemoperitôneo - 38 vs 30 anos, respectivamente. A ressecção cirúrgica da lesão sangrante foi realizada em 50% das pacientes e a mediana de dias entre o sangramento e a ressecção foi de 27 dias. Em apenas um caso foi lançado mão da embolização da lesão. Não se demonstrou correlação entre a taxa de redução das lesões e o passar dos meses, nos casos em que foi adotado tratamento conservador. Conclusão: conclui-se que aos AHC sangrantes da presente série apresentam concordância epidemiológica com a literatura e pode sugerir que as pacientes com maior idade tendem a apresentar hemoperitôneo mais frequentemente, fato que deve ser investigado em maiores estudos.

Nuevos avances en cirugía hepática: evaluación y planificación preoperatoria (Parte 1) / New advances in liver surgery: evaluation and preoperative planning

Resumen Los avances en la cirugía hepática de los últimos años han permitido resecciones hepáticas más extensa y complejas para el tratamiento de diferentes patologías del hígado sin un aumento excesivo de la morbimortalidad perioperatoria. El desarrollo de diferentes técnicas, tecnologías y herramientas para la evaluación preoperatoria han mejorado la planificación quirúrgica con el uso por ejemplo de las tecnologías audiovisuales e impresión de modelos en 3 dimensiones (3D) de alta fidelidad. Otros avances, han permitido realizar una mejor evaluación funcional del parénquima hepático y una caracterización más precisa de las lesiones con el uso por ejemplo de verde de indocianina, cintigrafía hepática y resonancia magnética con contraste hepatoespecífico. Este artículo describe algunos de los nuevos avances en la evaluación y planificación preoperatoria en cirugía hepática.

Advances in liver surgery in recent years have made it possible to achieve more extensive and complex liver resections for the treatment of different liver diseases without an excessive increase in perioperative morbidity and mortality. The development of different techniques, technologies and tools for preoperative evaluation have improved surgical planning with the use, for example, of audiovisual technologies and printing of high-fidelity 3-dimensional (3D) models. Other advances have allowed a better functional evaluation of the liver parenchyma and a more precise characterization of the lesions with the use, for example of indocyanine green or liver scintigraphy and magnetic resonance with hepatospecific contrast. This article describes some of the new advances in preoperative evaluation and planning in liver surgery.

Indocyanine green clearance test as a predictor of chemotherapy liver toxicity and post-operative complications in patients with colorectal liver metastases.

OBJECTIVE: This study aims to investigate the relationship between the pre-operative indocyanine green (ICG) test, the chemotherapy-associated liver injury (CALI), and the development of severe post-operative complications (POC) in patients operated of colorectal liver metastases (CRLMs). MATERIALS AND METHODS: Sixty-nine patients previously treated with chemotherapy and submitted to liver resection for CRLM were retrospectively studied. Two pathologists independently reviewed the pathological specimens and assessed the presence of CALI. The correlation between ICG clearance and specific pathological features was analyzed. In addition, a logistic regression analysis was performed to seek for pre-operative factors associated with severe complications. RESULTS: After a mean of 10.6 (± 7.5) chemotherapy cycles, 44 patients (63.8%) developed CALI. ICG retention rate at 15 min (ICG-R15) was not statistically different between patients with and without CALI and it could only discriminate the presence of centrilobular fibrosis. Rate of severe complications was almost 6-fold in patients with CALI compared to patients without CALI (p = 0.024). ICG-R15 ≥ 10% was the only independent risk factor associated with severe POC at multivariable logistic regression (OR = 4.075 95% CI: 1.077-15.422, p = 0.039). CONCLUSIONS: Pre-operative ICG clearance test, although not useful to identify patients with hepatic drug toxicity, is a strong predictor for the development of severe post-hepatectomy complications.

OBJETIVO: Investigar la relación entre el test de aclaramiento del verde de indocianina (ICG) preoperatorio, las alteraciones patológicas derivadas de la quimioterapia (CALI) y el desarrollo de complicaciones posoperatorias en los pacientes sometidos a resección hepática por metástasis de cáncer colorrectal (MCCR). MATERIAL Y MÉTODOS: Sesenta y nueve pacientes previamente tratados con quimioterapia y operados de MCCR se estudiaron de manera retrospectiva. Dos patólogas revisaron independientemente el parénquima hepático no tumoral de los especímenes y determinaron la presencia de daño quimio-inducido. Se analizó la correlación entre el aclaramiento de ICG y las diferentes alteraciones anatomo-patológicas encontradas. Además, se realizó un análisis de regresión logística para identificar los factores preoperatorios asociados con las complicaciones posoperatorias. RESULTADOS: Tras una media de 10.6 (± 7.5) ciclos de quimioterapia, 44 pacientes (63.8%) desarrollaron CALI. La tasa de retención de ICG a los 15 minutos (ICG-R15) no fue estadísticamente diferente entre los pacientes con y sin CALI y solo pudo discriminar la presencia de fibrosis centrolobulillar. La tasa de complicaciones severas posoperatorias fue 6 veces superior en los pacientes con CALI, comparada con aquella de los pacientes sin CALI (p = 0.024). Un ICG-R15 ≥ 10% fue el único factor de riesgo independiente asociado a complicaciones severas (OR = 4.075 95% CI: 1.077-15.422, p = 0.039). CONCLUSIONES: La prueba preoperatoria de aclaramiento del ICG, a pesar de no identificar eficazmente los pacientes con daño por quimioterapia, es un fuerte predictor de desarrollo de complicaciones severas posoperatorias.

Hiperamonemia como causa de diálisis no renal / Hyperammonemia as a cause of non-renal dialysis

Resumen La hiperamonemia es una condición frecuente en pacientes cirróticos y en el contexto de una causa no cirrótica se relaciona con aumento en la producción de amonio o alteración en su eliminación. La presentación clínica de esta condición es inespecífica: va desde alteración del comportamiento hasta estado de coma, siendo una de las causas de diálisis no renal por determinados valores o refractariedad a manejo médico. Se presenta el caso de una mujer de 35 años, quien ingresó al servicio de urgencias con alteración del estado de conciencia, niveles de amonio elevados y masa hipervascular en hígado. Los estudios de aminoácidos limitantes del ciclo de la urea y ácido orótico urinario fueron normales y la biopsia de la lesión hepática reportó carcinoma hepático fibrolamelar, al cual se atribuyó la presencia de shunt portosistémico que causaba la hiperamonemia. Se indicó diálisis por persistencia de elevaciones de amonio y poca respuesta al tratamiento médico. Dada la evolución de la paciente, fue necesario reiniciar la terapia reemplazo renal por reaparición de estado encefalopático al suspender la misma. Esta terapia se mantuvo hasta el trasplante hepático que se realizó como tratamiento del carcinoma, con posterior estabilización de niveles de amonio y suspensión de la diálisis.

Abstract Hyperammonemia is a common condition in cirrhotic patients. In the context of a non-cirrhotic cause, this is related to the increase in its production of ammonium or alteration in its elimination. The clinical presentation is nonspecific, from the alteration of the behavior to the coma, being one of the causes of non-renal dialysis due to certain values or refractoriness to medical management. The case of a 35-year-old woman is presented, who is admitted to the emergency department with altered state of consciousness, elevated ammonium levels and hypervascular mass in the liver. Biopsy of the liver lesion reports fibrolamellar liver carcinoma. The presence of a portosystemic shunt that causes hyperammonemia is attributed to this pathology. Dialysis is indicated by persistence of ammonium elevations with little response to medical treatment. In its evolution, it required a restart of renal replacement due to a reappearance of the encephalopathic state when it was suspended. This therapy is maintained until liver transplantation performed as a carcinoma treatment, with subsequent stabilization of ammonium levels and dialysis suspension.

ALPPS como opción quirúrgica en terapia reversa aplicado al tratamiento de las metástasis hepáticas del cáncer rectal sincrónico / ALPPS using liver-first reverse approach as a surgical option to treat synchronous colorectal liver metastases

RESUMEN El riesgo de insuficiencia hepática posoperatoria es la limitante de mayor importancia para el trata miento de pacientes con tumores hepáticos malignos primarios o secundarios. Entre las diferentes técnicas para incrementar la resecabilidad de tumores hepáticos se desarrolló una estrategia para pa cientes con tumores previamente considerados como irresecables, técnica conocida como ALPPS (as sociating liver partition with portal vein ligation for staged hepatectomy). Informamos acerca de una cirugía ALPPS en terapia reversa en un hombre referido a nuestro centro con diagnóstico sincrónico de cáncer rectal con metástasis hepáticas múltiples consideradas irresecable al momento del diagnóstico.

ABSTRACT The risk for postoperative liver failure is the most important limitation for the treatment of patients with primary or secondary liver cancer. Among the different strategies used to increase resectability in liver tumors, a technique known as ALPPS (associating liver partition with portal vein ligation for staged hepatectomy) was developed for patients with tumors previously considered unresectable. We report the case of a male patient referred to our center with a diagnosis of synchronous multiple liver metastases of colorectal cancer considered unresectable who underwent ALPPS using liver-first reverse approach.

Mucinous cystic neoplasm of the liver with biliary communication: case report and surgical therapeutic option.

BACKGROUND: Mucinous cyst neoplasm of the liver (MCN-L) comprise less than 5% of all cystic liver lesions and is characterized by the presence of ovarian stroma and absence of bile duct communication. CASE PRESENTATION: Here, we discuss a 45-year-old woman who presented with symptomatic liver mass. Diagnostic workup detected a 4.2 × 3.6 cm septate cyst located in segments I, V, and VIII of the liver in communication with the right hepatic duct. An open right liver resection with total bile duct excision and hilar lymphadenectomy was performed. Pathology revealed a multiloculated cyst with lined mucinous epithelium and ovarian-like stroma, consistent with low-grade MCN-L. CONCLUSIONS: This case shows that unusual location and bile duct communication can be present in MCN-L.

Surgical treatment results of hepatocellular carcinoma in non-cirrhotic liver in southern Chile: case series with follow-up.

BACKGROUND: Hepatocellular carcinoma is the most frequent primary tumour of the liver. Although often associated with chronic liver disease, it can also occur in non-cirrhotic livers. The aim of this study was to describe post-operative morbidity (POM), and survival of patients with hepatocellular carcinoma in non-cirrhotic liver treated surgically, and to identify variables associated with prognosis. METHODS: Case series of patients who underwent surgery for hepatocellular carcinoma in non-cirrhotic liver at Clínica RedSalud Mayor de Temuco, Chile (2001-2017), were studied. The minimum follow-up time considered was 12 months. Principal outcomes were development of POM and survival. Other variables of interest were age, sex, tumour diameter, surgical time, hospital stay, follow-up time, need for surgical re-intervention, mortality, vascular and lymph node invasion and staging. Descriptive and analytic statistics were calculated. RESULTS: A total of 32 patients were studied. They were characterized by a mean age of 67.3 ± 7.2 years, 62.5% of whom were men. Averages of tumour diameter, surgical time and hospitalization were 12.0 ± 2.6 cm, 114.4 ± 32.3 min and 7.2 ± 2.9 days, respectively. POM was 31.3%. There was no mortality and there were no re-interventions. The overall actuarial survival at 1, 2 and 3 years was 96.8%, 73.4% and 17.3%, respectively. Lower survival was verified in patients with vascular invasion, lymph node infiltration and stages III and IVa. CONCLUSION: Despite the tumour diameter and extent of the resections, POM in patients with hepatocellular carcinoma in non-cirrhotic liver is moderate. However, its prognosis is poor. Vascular invasion, lymph node invasion and advances stages were associated with worse survival.

[Hepatic Parasitosis: Atypical presentation] / Parasitosis Hepática: Presentación atípica.

Benign solid liver tumors are composed by a heterogeneous group of lesions. Hepatic parasitosis is an infrequent etiological cause of benign solid liver tumors. Objective. To present the case of a patient with benign solid liver tumors treated with right portal vein embolization and, later, with hepatectomy. Clinical case. 60-year-old, male patient diagnosed with multiple solid liver tumors, due to a generalized case of jaundice. The decision to perform surgery was made on the basis of the clinical symptoms and the impossibility of discarding malignancy through complementary tests. Before surgery, hepatic volumetry and right portal vein embolization were done to increase future hepatic remnant. Right hepatectomy and hepatic resection of segment IVa were performed. The patient evolved positively from jaundice and the anatomopathological results showed a lesion related to hepatic parasitosis. Conclusion. In the presence of a solid liver tumor, it is necessary to rule out the malignant etiology of the lesion. If this is not possible, or if the patient continues with the symptomatology, surgical resection is prescribed, taking into account the volume of the hepatic gland and future hepatic remnant.

Los tumores hepáticos sólidos benignos están formados por un grupo heterogéneo de lesiones. Las parasitosis hepáticas conforman una causa etiológica poco frecuente de tumores hepáticos sólidos benignos. Objetivo. Reportar el caso de un paciente con tumores hepáticos solidos benignos tratado con embolización portal derecha y posteriormente hepatectomía. Caso clínico. Paciente de 60 años, sexo masculino, al cual se le diagnostican múltiples tumores hepáticos sólidos, debido a cuadro de ictericia generalizada. Debido al cuadro sintomático, y al no poder descartar malignidad con las pruebas complementarias, se decide realizar cirugía. Previamente se realiza volumetría de la glándula hepática y embolización portal derecha para aumentar el remanente hepático futuro. Se realiza hepatectomía derecha y segmentectomía hepática IVa. Evoluciona con mejoría del cuadro ictérico y el resultado anatomopatológico informa lesión vinculable a parasitosis hepática. Conclusión. Ante la presencia de un tumor hepático sólido, es necesario descartar etiología maligna de la lesión. Si no es posible descartar esto, o si el paciente persiste con sintomatología, la resección quirúrgica está indicada, teniendo en cuenta el volumen de la glándula hepática y del remanente hepático futuro.

Are Hybrid Liver Resections Truly Minimally Invasive? A Propensity Score Matching Analysis.

BACKGROUND: Hybrid liver resection is considered a modality of minimally invasive surgery; however, there are doubts regarding loss of benefits of laparoscopy due to the use of an auxiliary incision. We compared perioperative results of patients undergoing hybrid × open and hybrid × pure laparoscopic resections. METHODS: Consecutive patients undergoing liver resection between June 2008 and January 2016 were studied. Study groups were compared after propensity score matching (PSM). RESULTS: Six hundred forty-four resections were included in the comparative analysis: 470 open, 120 pure laparoscopic, and 54 hybrids. After PSM, 54 patients were included in each group. Hybrid × open: hybrid technique had shorter operative time (319.5 ± 108.6 × 376.2 ± 155.8 minutes, P = .033), shorter hospital stay (6.0 ± 2.7 × 8.1 ± 5.6 days, P = .001), and lower morbidity (18.5% × 40.7%, P = .003). Hybrid × pure laparoscopic: hybrid group had lower conversion rate (0% × 13%, P = .013). There was no difference regarding estimated blood loss, transfusion rate, hospital stay, complications, or mortality. CONCLUSIONS: Hybrid resection has better perioperative results than the open approach and is similar to pure laparoscopy. The hybrid technique should be considered a minimally invasive approach.

Inverting the ALPPS paradigm by minimizing first stage impact: the Mini-ALPPS technique.

PURPOSE: The current associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) approach is represented by an aggressive first surgical procedure followed by a shorter and less aggressive second procedure. This paradigm has been associated with high morbidity and mortality. Inverting the aggressiveness of the surgical stages might be beneficial in order to facilitate patient recovery during interval period. We propose a new technical paradigm for the ALPPS approach. METHODS: During the first stage, partial parenchymal transection combined with intraoperative portal vein embolization (PVE) was performed. Liver mobilization was kept at minimum while hilar plate or hilum dissection was strictly avoided. The completion surgery by means of the anterior approach was carried out once sufficient future liver remnant (FLR) hypertrophy and function were certified. RESULTS: We applied this technique in four patients (hepatocellular carcinoma in a cirrhotic liver = 1 and colorectal liver metastases = 3). The mean FLR hypertrophy was 62.6 % (range 49-79). All the four patients underwent the completion surgery with R0 margins, and neither one developed liver failure nor major complications. CONCLUSIONS: The technique proposed inverts the current ALPPS strategy, minimizing the first stage impact to promote rapid patient recovery and leaving the main surgical procedure for the second stage. The combination of evidence-based facts such as partial parenchymal transection, intraoperative PVE, and "non-touch" oncological rules was feasible and safe, allowing complete tumor resection in highly selected candidates with extensive liver disease.

Laparoscopic liver resection: Experience based guidelines.

Laparoscopic liver resection (LLR) has been progressively developed along the past two decades. Despite initial skepticism, improved operative results made laparoscopic approach incorporated to surgical practice and operations increased in frequency and complexity. Evidence supporting LLR comes from case-series, comparative studies and meta-analysis. Despite lack of level 1 evidence, the body of literature is stronger and existing data confirms the safety, feasibility and benefits of laparoscopic approach when compared to open resection. Indications for LLR do not differ from those for open surgery. They include benign and malignant (both primary and metastatic) tumors and living donor liver harvesting. Currently, resection of lesions located on anterolateral segments and left lateral sectionectomy are performed systematically by laparoscopy in hepatobiliary specialized centers. Resection of lesions located on posterosuperior segments (1, 4a, 7, 8) and major liver resections were shown to be feasible but remain technically demanding procedures, which should be reserved to experienced surgeons. Hand-assisted and laparoscopy-assisted procedures appeared to increase the indications of minimally invasive liver surgery and are useful strategies applied to difficult and major resections. LLR proved to be safe for malignant lesions and offers some short-term advantages over open resection. Oncological results including resection margin status and long-term survival were not inferior to open resection. At present, surgical community expects high quality studies to base the already perceived better outcomes achieved by laparoscopy in major centers' practice. Continuous surgical training, as well as new technologies should augment the application of laparoscopic liver surgery. Future applicability of new technologies such as robot assistance and image-guided surgery is still under investigation.

Algunas especificidades en torno a las neoplasias primarias del segmento hepatobiliopancreático / Some specificities about primary neoplasms of the hepatobiliopancreatic segment

Hoy día existen muchos criterios sobre las características clinicoepidemiológicas y quirúrgicas de las neoplasias primarias del segmento hepatobiliopancreático, lo cual constituye un verdadero problema científico, por las tasas elevadas de letalidad y mortalidad, por cuanto resulta de gran importancia identificar los factores pronósticos de complicaciones y decesos, inherentes a esta entidad clínica, a fin de elaborar un protocolo de actuación y buenas prácticas. Todo ello justifica la necesidad de profundizar en los principales aspectos cognoscitivos relacionados con este tema, puesto que solo contando con equipos de trabajo altamente especializados, podrá elevarse la calidad asistencial y, por tanto, el índice de supervivencia de quienes presenten esa lamentable enfermedad.

Nowadays there are many approaches about the surgical and clinical-epidemiological characteristics of the primary neoplasms in the hepatobiliopancreatic segment, that constitutes a true scientific problem, for its high rates of lethality and mortality, so it is very important to identify the prognosis factors of complications and deaths, inherent in this clinical entity, in order to elaborate a performance protocol and good practice. Everything is justified by the necessity to deepen in the main cognitive aspects related to this topic, since just counting on highly specialized work teams, the assistance quality will be higher, therefore, the survival rate of those who present that terrible disease.

Ressecção de metastáses hepáticas em dois estágios e reconstrução da veia cava suprarrenal / Two-stage hepatectomy for hepatic metastasis and supra renal vena cava reconstruction

A hepatectomia em duas etapas utiliza a capacidade de regeneração do fígado, após uma primeira hepatectomia não curativa, para permitir uma segunda ressecção. Neste artigo relatamos os aspectos técnicos do manejo de uma doente de 37 anos de idade, com metástases colorretais sincrônicas, onde uma única hepatectomia não era suficiente para remover todas as lesões, mesmo em combinação com quimioterapia, embolização portal ou radiofrequência. Porém as metástases poderiam ser removidas por duas ressecções sequenciais.

Two-stage hepatectomy uses compensatory liver regeneration after a first noncurative hepatectomy to enable a second curative resection. Herein we report the tecnical aspects of the management of a thirty-seven years-old woman with colorectal metastasis to the liver eligible because single resection could not achieve complete treatment, even in combination with chemotherapy, portal embolization, or radiofrequency, but tumors could be totally removed by two sequential resections.

Laparoscopic left lateral segmentectomy for metachronic metastases of small intestine adenocarcinoma: a case report

Hepatectomy has been the standard treatment for metachronic metastases of non-colorectal (NCR) origin, mainly when the disease-free interval is more than two years. Laparoscopic hepatectomy has become the golden standard mainly for left side resections, due to lower morbidity, shorter hospital stay, early recovery and good cosmetic outcome. The authors report the case of a female patient with two metachronic metastases (ten years of disease-free survival), of non-colorectal origin (adenocarcinoma of small intestine), treated by laparoscopic left lateral segmentectomy (left hepatic lobectomy) with success. The postoperative progress was satisfactory. To date, the patient has presented no tumoral recurrence (six months of follow-up period). Laparoscopic left lateral segmentectomy can be satisfactorily performed in selected cases of hepatic metastasis. This approach presents low morbidity and good cosmetic result. The lack of alternative treatments and the poor prognosis of untreated cases have justified surgical resection in order to increase overall survival. Nevertheless, this approach should be performed by hepatic surgery expertise teams trained on advanced laparoscopic procedures. (AU)

A hepatectomia tem sido o tratamento padrão para metástase de origem não colorretal (NCR) metacrônica, principalmente quando o intervalo livre de doença é maior do que dois anos. A hepatectomia por laparoscopia tem se tornado padrão principalmente para as ressecções à esquerda, haja vista a menor morbidade, menor tempo de internação, reabilitação precoce e melhor resultado estético. Os autores relatam um caso de paciente com duas metástases metacrônicas (10 anos de sobrevida livre de doença), de etiologia não colorretal (adenocarcinoma de intestino delgado), tratada com segmentectomia lateral esquerda (lobectomia hepática esquerda) laparoscópica. Paciente apresentou boa evolução pós-operatória sem recidiva (seis meses de seguimento). Segmentectomia lateral esquerda laparoscópica pode ser satisfatoriamente realizada em casos selecionados de metástases hepáticas, acarretando menor morbidade e melhor resultado estético. A falta de tratamentos alternativos e o prognóstico reservado nos casos de metástases NCR não operadas justificam a ressecção com o objetivo de prolongar a sobrevida. No entanto, essa abordagem deve ser realizada por equipe especializada em cirurgia hepática com treinamento em procedimentos laparoscópicos avançados. (AU)

Hepatectomia direita ampliada com ressecção parcial da veia cava para metástase colorretal: relato de caso / Extended right hepatectomy with partial resection of the vena cava from colorectal metastases: case report

Introdução: A hepatectomia tem sido o tratamento padrão para metástase de origem colorretal (CR). Metástase com invasão da veia cava inferior (VCI) pode requerer ressecção combinada do fígado e VCI. Esta abordagem pode apresentar alto risco cirúrgico. Sangramento profuso e embolia gasosa são complicações intra-operatorias letais. Relato de Caso: Os autores relatam um caso de metástase colorretal única tratada com hepatectomia direita ampliada e ressecção parcial da veia cava com reconstrução primaria. Paciente apresentou boa evolução pós-operatória sem recidiva (um ano de seguimento). Conclusão: Ressecção da VCI e reconstrução combinada com hepatectomia pode ser satisfatoriamente realizada em casos selecionados. A falta de tratamentos alternativos e o prognostico reservado nos casos não operados justificam esta conduta agressiva. No entanto, esta abordagem deve ser realizada por equipe especializada em cirurgia hepática.

Introduction: Hepatectomy has been standard treatment for metastases from colorectal origin (CR). Metastases with inferior vena cava (IVC) involvement may require combined resection of the liver and IVC. This approach may present high surgical risk, Both profuse bleeding and gas embolism are letal intraoperative complications. Case: The authors present a case of single hepatic CR metastasis that was treated by means extended right hepatectomy with partial inferior vena cava resection and primary reconstruction. Patient present good postoperative course without neoplasm recurrence (one year follow-up period). Conclusion: Resection of VCI and combined reconstruction with hepatectomy may be satisfactorily done in selected cases. Lack of alternative treatments associated poor prognosis of untreated cases has justified this aggressive conduct. Therefore, this approach should be realized by hepatic surgery expertise team.

Hamartoma mesenquimatoso hepático en un anciano / Mesenchymal hamartoma of the liver in an elderly man

El hamartoma mesenquimatoso hepático es un tumor benigno poco frecuente, formado por alteraciones de la placa hiliar y compuesto por tejidos mixomatoso, mesenquimático y conductos biliares anormales en proporciones variables. Habitualmente son formaciones hepáticas múltiples, quísticas y sin comunicación con la vía biliar. Es más frecuente en niños, es raro en adultos. El primer caso fue publicado por Yamamura et al en 1976, y se encuentran pocos en la bibliografía. Presentamos el caso de un paciente de 87 años con un hamartoma hepático quístico de 20 cm.

The mesenchymal hamartoma of the liver is a non frequent benign tumor with a ductal plate malformation, consisting of myxoid mesenchymal tissue and abnormal bile ducts in different proportion. Usually it presents as multiple liver cyst formations without communication with the principal bile duct. They are frequent in children, being rare in adults. The first case was reported by Yamamura et al in 1976, and very few cases are reported in the bibliography. We present the case of an elder 87 year old male who presented a 20 cm mesenchymal hamartoma liver cyst.

Hepatectomia para o tratamento de metástases colorretais e não-colorretais: análise comparativa em 30 casos operados / Hepatectomy for metastasis from colorectal and non-colorectal origin: comparative analysis in 30 resectable cases

RACIONAL: Hepatectomia é a melhor opção terapêutica curativa para metástases hepáticas de origem colorretal. Mais recentemente, ressecção hepática também tem sido realizada para metástases de etiologia não-colorretal. OBJETIVO: Comparar os resultados em curto e longo prazo de uma série de hepatectomias para 20 doentes com metástase colorretal com uma série de 10 doentes com metástase não-colorretal realizadas pelo Serviço de Cirurgia Geral (Disciplina de Cirurgia do Aparelho Digestivo) da Faculdade Medicina do ABC (Santo André - Brasil). MÉTODOS: Os dados completos de 30 doentes submetidos à hepatectomia por metástase metacrônica entre o período de Janeiro de 2001 e Setembro de 2007 foram avaliados. Vinte com metástase colorretal (Grupo 1) foram comparados com dez com metástase não-colorretal (Grupo 2). Foi realizada análise multivariada dos fatores prognósticos com o programa Epi-Info para Windows. RESULTADOS: Foram realizadas vinte hepatectomias maiores e dez hepatectomias menores. A morbidade foi similar entre os grupos (p >0,05). A mortalidade cirúrgica foi maior no Grupo 1 do que no Grupo 2 (5 por cento X 0 por cento), mas não houve significância estatística (p>0,05). Os índices de sobrevida global em 3 e 5 anos foram comparáveis entre os dois grupos (p>0,05). CONCLUSÃO: Nessa amostra, a ressecção hepática para metástase de etiologia não-colorretal apresenta resultados similares aos da metástase colorretal com sobrevida em cinco anos de 20 por cento. Foram fatores prognósticos adversos: mais que uma metástase e linfonodo positivo.

BACKGROUND: Hepatectomy has presented the best curative therapeutic choice for hepatic metastatic colorectal cancer. More recently, hepatic resection has been performed for hepatic metastases from non-colorectal origin too. AIM: To compare both early and long-term surgical outcomes on 20 patients' series of colorectal with 10 patients' series of non-colorectal hepatic metastases realized by General Surgery Service (Discipline of Tract Digestive Surgery) of ABC Medical School (Santo André - Brazil). METHODS: Complete follow-up data were available on 30 patients who underwent hepatectomy for metastatic methacronic cancer between January 2001 and September 2007. Twenty patients presented colorectal liver metastases (Group 1) were compared with ten patients presented non-colorectal metastases (Group 2). RESULTS: There were twenty major hepatic resections and ten minor hepatic resections. Overall morbidity rates were similar between Groups 1 and 2 (p = ns). Overall mortality in Group 1 was higher than Group 2 (5 percent X 0 percent), nevertheless there was no statistical significance (p=ns). Both 3 and 5-year overall survival rates were comparable between groups (p=ns). Both number of lesions and nodal disease were considered dismal prognostic factors. CONCLUSION: In this sample, hepatic resection for liver metastasis from non-colorectal and nonneuroendocrine origin presents similar results to colorectal metastasis. Multiple metastases and positive node were adverse prognostic factors.