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Dive into the research topics where Nicolás Pedano is active.

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Featured researches published by Nicolás Pedano.


Revista Espanola De Enfermedades Digestivas | 2010

The celiac axis compression syndrome (CACS): critical review in the laparoscopic era

Javier A. Cienfuegos; Fernando Rotellar; Víctor Valentí; Jorge Arredondo; Nicolás Pedano; Álvaro Bueno; Isabel Vivas

The celiac axis compression syndrome (CACS) due to median arcuate ligament (MAL) was first described by Harjola in 1963; originating postpandrial abdominal pain, weight loss, epigastric bruit and celiac axis stenosis > 75% in angiographic studies. This clinical condition has been the origin of controversies about its pathogenesis, diagnosis and its long term clinical results. Advances in diagnostic imaging as 64 multidetector-row CT (MDCT), 3-D reconstruction, magnetic resonance (MR) and color duplex ultrasonography, provide better understanding of the syndrome and allow to identify the best candidates for surgical division of MAL fibers. Since the introduction of laparoscopic approach, and also endovascular procedures, in 2000, a new perspective has established in this challenging syndrome. With the occasion of our own experience, a critical review of the syndrome is presented.


Surgical Endoscopy and Other Interventional Techniques | 2012

A novel extra-glissonian approach for totally laparoscopic left hepatectomy

Fernando Rotellar; Fernando Pardo; Alberto Benito; Pablo Martí-Cruchaga; Gabriel Zozaya; Nicolás Pedano

IntroductionWe describe a novel extra-glissonian approach (EGA) for totally laparoscopic left hepatectomy. Published techniques for totally laparoscopic left hepatectomy generally involve the selective ligation of the vascular and biliary elements of the left pedicle. The laparoscopic dissection of these structures can be tedious, difficult, and dangerous. The EGA has proven useful in open surgery for major hepatectomies. We feel that this approach could be even more useful in the laparoscopic context.MethodsWe describe an extra-glissonian laparoscopic technique in which the left pedicle is isolated extraparenchymally, detaching the left hilar plate, with particular attention to preserving the branch for segment I. The left portal triad is encircled with a cotton tape and transected with an endostapler. This is performed totally extraparenchymally without damaging the surrounding parenchyma.ResultsThis EGA technique for laparoscopic left hepatectomy follows by laparoscopy the same steps and recommendations that make the EGA safe and effective in open surgery.ConclusionsThe EGA for LLH can be performed as described in open surgery, therefore offering the same advantages.


Revista Espanola De Enfermedades Digestivas | 2013

Hepatoblastoma en el adulto

Javier A. Cienfuegos; Tania Labiano; Nicolás Pedano; Gabriel Zozaya; Pablo Martí-Cruchaga; Angel Panizo; Fernando Rotellar

Adult hepatoblastoma (AHB) is a very rare tumor, having been described 45 cases up to June 2012. In contrast to HB in infancy (IHB), it has poor prognosis. We present the case of a 37-year-old asymptomatic woman who consulted for a large –12 cm diameter– mass involving segments 5 and 6 of the liver, and alfa-fetoprotein of 1,556,30 UI/mL. A bisegmentectomy was carried out. The microscopic study confirmed the AHB diagnosis, revealing the presence of epithelial cells forming clusters, trabecular patterns and tubules. The patient died on the 10th postoperative month due to progression disease. The Wnt/β-Catenin signaling pathway mutation has been reported and associated with a poor prognosis in IHB. Due to the AHB poor prognosis, seems reasonable to introduce the therapeutic regimens described in children who have a better outcome.


Revista Espanola De Enfermedades Digestivas | 2012

Perforación de ulcus gigante duodenal: reparación innovadora mediante una plastia del antro gástrico

Javier A. Cienfuegos; Fernando Rotellar; Víctor Valentí; Jorge Arredondo; Jorge Baixauli; Nicolás Pedano; Manuel Bellver; José Luis Hernández-Lizoain

Backgrounds: the treatment of a perforated giant duodenal ulcer (GUDs) represents a formidable surgical challenge regarding the duodenal wall defect repair in severe peritonitis setting. A high incidence of dehiscence and hospital mortality (15-40%- has been reported with the majority of the techniques). We report a case of GUDs perforation successfully treated with a subtotal gastrectomy and a gastric patch with the remnant antrum, for repairing the duodenal defect. Case report: a 63-years-old man with antecedents of peptic ulcer disease presents a large duodenal ulcer perforation with 48 hrs delay and associated with severe peritonitis and a retroperitoneal collection. A subtotal gastrectomy with Billroth II reconstruction and reconstruction of the duodenal defect with a patch of the remnant antrum was carried out. The patient was discharged at 17 th postop erative day with good tolerance. Discussion: the duodenal defect repair with a patch of the re mant antrum, represents a valid alternative in similar circumstances. To our knowledge, it appears to be the first clinical description of this technique


Revista Espanola De Enfermedades Digestivas | 2010

Neoplasia papilar mucinosa intraductal del páncreas: resultados clínico-patológicos

Javier A. Cienfuegos; Fernando Rotellar; P Martí Cruchaga; Valentí; Gabriel Zozaya; Álvaro Bueno; Nicolás Pedano; M. D Lozano; Jesús Javier Sola; Fernando Pardo

BACKGROUND intraductal papillary mucinous neoplasm (IPMN) shows a series of lesions which evolve from benign lesions -adenoma- to invasive carcinoma. AIM To analyze the clinical and pathological results of 15 patients diagnosed of IPMN, and surgically treated according to the guidelines of International Consensus Conference. MATERIAL AND METHODS A retrospective analysis of 15 patients surgically treated between March 1993 and September 2009, according to the International Consensus recommendation. Demographic, diagnostic tools, surgical report, pathologic database and actuarial survival were analyzed with a follow-up from one and a half month through nine years. RESULTS 6 Patients underwent pancreaticoduodenectomies, 4 total pancreatectomies, 2 body or central pancreatectomies, 2 partial pancreatectomies (enucleation) and 1 distal pancreatectomy. A morbidity of 46 and 0% hospital mortality were assessed, with a median length hospital stay of 10 days. In five cases, the IPMN was combined type (both main and branch pancreatic ducts involved) in four main duct-type and branch duct-type in the another six as well. Several atypia (IPMN carcinoma in situ) was observed in 2 patients and invasive carcinoma with negative lymph nodes was identified in 3 patients. A patient without invasive carcinoma died at 66 months of follow-up for pancreas adenocarcinoma. The actuarial survival up to recurrence or death was 105,133 months with a range of follow-up from 1 month and a half until 9 years. CONCLUSIONS IPMN main duct or mixed type warrants complete resection due to its incidence of invasive carcinoma or precursor lesions of malignancy as well. Due to its multifocal pattern, patients should be followed in long-term surveillance. The management of asymptomatic IPMN type branch less than 3 cm is controversial.


Transplantation Proceedings | 2012

Efficacy of Laparoscopic Approach in the Management of Early Liver Transplant Complications

Nicolás Pedano; Fernando Rotellar; Javier Álvarez-Cienfuegos; Jorge Arredondo; Manuel Bellver; P. Martínez; C. Sánchez; Pablo Martí; Gabriel Zozaya; J.I. Herrero; Fernando Pardo

The use of the laparoscopic approach in managing early liver transplant complications has been shown to be safe and feasible in various settings with the advantages of shorter recovery period, decreased postoperative pain, and rapid functional recovery. The laparoscopic approach has been used to resolve postoperative complications in kidney and pancreas recipients and less often in orthotopic liver transplantation (OLT) recipients, most of them in the late period (> 1 month posttransplantation). We herein describe our experience with the laparoscopic management of early complications after liver transplantation. From May 2009 to May 2011, we successfully treated three patients with early abdominal complications after OLT using a laparoscopic approach. Three patients-two with intraabdominal bleedings and one with a small bowel obstruction were treated successfully, thereby avoiding risks of a relaparotomy. In addition to these benefits, the laparoscopic approach causes less tissue injury and consequently evokes a minor innate immune response.


Cirugia Espanola | 2013

Trasplante ortotópico de hígado en la poliquistosis hepática

Jorge Arredondo; Fernando Rotellar; Ignacio Herrero; Nicolás Pedano; Pablo Martí; Gabriel Zozaya; Manuel Bellver; Fernando Pardo

INTRODUCTION There is currently no effective medical therapy for polycystic liver (PCL). Cyst puncture and sclerotherapy, cyst fenestration, or partial hepatic resections have been used as palliative treatments. Orthotopic liver transplantation (OLT) has become the treatment of choice for terminal PCL, being indicated in patients with limiting symptoms not susceptible to any other medical treatment. It is also difficult to determine the priority on the waiting list using the Model for End-Stage Liver Disease (MELD). METHODS A retrospective analysis of OLT for PCL was conducted in our centre. Inclusion criteria were patients with limiting symptoms, bilateral cysts liver, and insufficient remaining liver. In all cases a deceased donor liver transplantation with piggy-back technique without veno-venous bypass was performed. RESULTS Six patients underwent liver transplantation for PCL between April 1992 and April 2010, one of them a combined liver-kidney transplantation. The mean intraoperative packed red blood cell transfusion was 3.25 L and fresh frozen plasma was 1.200 cc. Mean operation time was 299 min, and 498 min in the liver-kidney transplantation. There was no peri-operative mortality. The mean hospital stay was 6.5 days. All patients are healthy after a mean follow-up of 71 months. CONCLUSION OLT offers an excellent overall survival. Results are better when OLT is performed early; thus these patients should receive additional points to be able to use the MELD score as a valid prioritisation system for waiting lists.


Langenbeck's Archives of Surgery | 2012

Open tension-free hernioplasty using a novel lightweight self-gripping mesh: medium-term experience from two institutions

Nicolás Pedano; Carlos Pastor; Jorge Arredondo; I. Poveda; Jaime Ruiz; Soledad Montón; Maria José Molina; José Luis Hernández-Lizoain


Revista Espanola De Enfermedades Digestivas | 2010

Solid pseudopapillary tumor of the pancreas (SPPT). Still an unsolved enigma

Javier A. Cienfuegos; Lozano; Fernando Rotellar; Pablo Martí; Nicolás Pedano; Jorge Arredondo; Manuel Bellver; Jesús Javier Sola; Fernando Pardo


Cirugia Espanola | 2012

Resección totalmente laparoscópica de lesiones sólidas hepáticas: análisis de una serie institucional de 71 casos

Fernando Rotellar; Álvaro Bueno; Alberto Benito; Pablo Martí-Cruchaga; Gabriel Zozaya; Nicolás Pedano; Fernando Pardo

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