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Risk factors and classifications of hilar cholangiocarcinoma.

Cholangiocarcinoma is the second most common primary malignant tumor of the liver. Perihilar cholangiocarcinoma or Klatskin tumor represents more than 50% of all biliary tract cholangiocarcinomas. A wide range of risk factors have been identified among patients with Perihilar cholangiocarcinoma including advanced age, male gender, primary sclerosing cholangitis, choledochal cysts, cholelithiasis, cholecystitis, parasitic infection (Opisthorchis viverrini and Clonorchis sinensis), inflammatory bowel disease, alcoholic cirrhosis, nonalcoholic cirrhosis, chronic pancreatitis and metabolic syndrome. Various classifications have been used to describe the pathologic and radiologic appearance of cholangiocarcinoma. The three systems most commonly used to evaluate Perihilar cholangiocarcinoma are the Bismuth-Corlette (BC) system, the Memorial Sloan-Kettering Cancer Center and the TNM classification. The BC classification provides preoperative assessment of local spread. The Memorial Sloan-Kettering cancer center proposes a staging system according to three factors related to local tumor extent: the location and extent of bile duct involvement, the presence or absence of portal venous invasion, and the presence or absence of hepatic lobar atrophy. The TNM classification, besides the usual descriptors, tumor, node and metastases, provides additional information concerning the possibility for the residual tumor (R) and the histological grade (G). Recently, in 2011, a new consensus classification for the Perihilar cholangiocarcinoma had been published. The consensus was organised by the European Hepato-Pancreato-Biliary Association which identified the need for a new staging system for this type of tumors. The classification includes information concerning biliary or vascular (portal or arterial) involvement, lymph node status or metastases, but also other essential aspects related to the surgical risk, such as remnant hepatic volume or the possibility of underlying disease.

[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)