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Featured researches published by M. Zambelli.


Transplant International | 2006

Extended right split liver graft for primary transplantation in children and adults

V. Corno; M. Colledan; Maria Clara Dezza; M. Guizzetti; A. Lucianetti; Gregorio Maldini; D. Pinelli; Mara Giovanelli; M. Zambelli; G. Torre; Mario Strazzabosco

Skepticism remains about the use of the extended right (ER) split graft (segments I, IV–VIII) for adult liver transplantation. We analyzed the results of primary liver transplantation performed with an ER graft in adult and in pediatric recipients. At our Institution, between October 1997 and June 2005, 32 primary liver transplantations with an ER graft were performed in 22 adult and 10 pediatric recipients. All the splitting procedures were performed in situ. Actuarial patient and graft survival among the adult recipients of the ER graft were 100% and 100% at 1 year, and 94% and 94% at 5 years. In the pediatric recipients, patient and graft survival were 90% and 79% both at 1 and 5 years. No hepatic artery thrombosis (HAT) occurred in the adult group, while in the pediatric recipients HAT occurred in two cases. A higher biliary morbidity occurred in the ER graft group when compared with the whole size graft 34% versus 13% (P = 0.03). However, this did not affect patient and graft survival. The results of this study may represent a further argument in favor of extensive splitting of all suitable grafts.


Annals of Surgery | 2014

A prospective policy development to increase split-liver transplantation for 2 adult recipients: Results of a 12-year multicenter collaborative study

Paolo Aseni; T. De Feo; L De Carlis; Umberto Valente; M. Colledan; Umberto Cillo; G. Rossi; Mazzaferro; M. Donataccio; N. De Fazio; Enzo Andorno; Patrizia Burra; Alessandro Giacomoni; A.O Slim; Carlo Sposito; A. De Gasperi; B. Antonelli; Giacomo Zanus; D. Pinelli; M. Zambelli; N. Morelli; R Valente; G Grosso; M. Mantovani; Giuseppe Piccolo

Objective:To analyze in a multicenter study the potential benefit of a new prospective policy development to increase split-liver procedures for 2 adult recipients. Background:Split-liver transplantation is an important means of overcoming organ shortages. Division of the donor liver for 1 adult and 1 pediatric recipient has reduced the mortality of children waiting for liver transplantation but the benefits or disadvantages to survival when the liver is divided for 2 adults (adult-to-adult split-liver transplant, AASLT) compared with recipients of a whole graft have not been fully investigated. Methods:We developed a computerized algorithm in selected donors for 2 adult recipients and applied it prospectively over a 12-year period among 7 collaborative centers. Patient and graft outcomes of this cohort receiving AASLT either as full right grafts or full left grafts were analyzed and retrospectively compared with a matched cohort of adults who received a conventional whole-liver transplant (WLT). Univariate and multivariate analysis was done for selected clinical variables in the AASLT group to assess the impact on the patient outcome. Results:Sixty-four patients who received the AASLT had a high postoperative complication rate (64.1% grade III and IV) and a lower 5-year survival rate than recipients of a WLT (63.3% and 83.1%) Conclusions:AASLT should be considered a surgical option for selected smaller-sized adults only in experimental clinical studies in experienced centers.


American Journal of Transplantation | 2012

Full‐Right‐Full‐Left Split Liver Transplantation: The Retrospective Analysis of an Early Multicenter Experience Including Graft Sharing

M. Zambelli; Enzo Andorno; L De Carlis; G. Rossi; Umberto Cillo; T. De Feo; A. Carobbio; Alessandro Giacomoni; G Bottino; M. Colledan

Full‐right‐full‐left split liver transplantation divides a donor liver into two grafts to be transplanted in adult‐size patients. Major technical and organizational difficulties have limited its application to few single center series. We retrospectively analyzed the long‐term results of the first multicenter series of this procedure with graft sharing. Between November 1998 and January 2005, 43 transplants were performed by five centers from 23 full‐right‐full‐left in situ split liver procedures; 65% of the grafts were shared. A total of 31 (72%) patients had complications above grade II; 3 (6.9%) were retransplanted. Hospital mortality was 23% with sepsis as the main cause. Six patients died in the long term, two of them for a road accident. A total of 27 patients are alive after a median follow‐up of 3200 days (2035–4256). Actuarial survival at 1 and 10 years were 72.1%, 62.6% and 65.1%, 57.9%, respectively for patients and grafts. These figures are similar to those reported for adult living donor liver transplantation by the European Registry over a similar period. Multicenter collaboration in sharing of these grafts is feasible and can help facing the organizational limits, thus increasing diffusion of full‐right‐full‐left split liver transplantation.


Transplantation Proceedings | 2010

Lung transplantation with grafts from elderly donors: a single-center experience.

Maria Clara Dezza; Piercarlo Parigi; V. Corno; A. Lucianetti; D. Pinelli; M. Zambelli; M. Guizzetti; A. Aluffi; F. Tagliabue; Marco Platto; D. Codazzi; M. Triggiani; M. Colledan

INTRODUCTION Use of extended criteria donors is one of the strategies to face the scarcity of donors for lung transplantation. METHODS Between November 2002 and May 2009, we performed 52 LTs in 50 recipients, 10 of whom (group A) received lungs from donors aged 55 years or older (median, 58.5; range, 56-66 years) for comparison with 28 patients (group B) transplanted with lungs from donors younger than 55 years (median, 25.5; range, 15-54 years). We excluded 9 children and 3 recipients of combined liver plus lung transplantations from the study. RESULTS Recipient age, gender, and indications for transplantation did not differ significantly between the 2 groups. Neither were there significant differences in PaO2/FiO2 ratios before lung retrieval, or length of the ischemic time The first PaO2/FiO2 on arrival to the intensive care unit (ICU) and the median length of ICU stay were similar. All patients, except 2 who died in the operating theatre, were extubated between 3 and 216 hours after the transplantation. Hospital mortality was similar in both groups: 3 patients in group A and 2 in group B (P = .1). The median portions of the predicted 1-second forced expiratory volume (FEV1) at 6 months after transplantation did not differ in the 2 groups: 62.4% in group A versus 70% in group B (P = .85). CONCLUSION Lung grafts from donors older than 55 years can be effectively used for transplantation, thus increasing the total organ pool.


Transplant International | 2015

The successful management of a Bronchoesophageal fistula after lung transplantation: a case report

Stefania Camagni; A. Lucianetti; Paolo Ravelli; Giovanni Battista Di Dedda; Ezio Bonanomi; V. Corno; A. Aluffi; D. Pinelli; M. Zambelli; M. Guizzetti; Piercarlo Parigi; M. Colledan

We describe an unprecedented, disastrous complication after bilateral lung transplantation (BLT), a bilateral bronchial dehiscence with a right bronchoesophageal fistula leading to life‐threatening septic shock. We also report the successful endoscopic management of this complication by double stenting and stress the efficacy of the multidisciplinary approach to this critical case.


Transplant International | 2014

Neonatal haemochromatosis with reversible pituitary involvement

Giuseppe Indolfi; Rita Bèrczes; Isabella Pelliccioli; Michela Bosisio; Cristina Agostinis; Massimo Resti; M. Zambelli; A. Lucianetti; M. Colledan; Lorenzo D'Antiga

Neonatal haemochromatosis is a rare alloimmune gestational disease with a high mortality. The hallmark of neonatal haemochromatosis is severe neonatal liver failure associated with extrahepatic siderosis. Thus far, no pituitary dysfunction has been reported to result from the tissue damage associated with extrahepatic siderosis. The present report describes a neonate with neonatal haemochromatosis and secondary hypothyroidism associated with pituitary iron deposition. Both the conditions were successfully treated by ABO‐incompatible liver transplantation. Pituitary gland dysfunction is another possible extrahepatic manifestation of neonatal haemochromatosis, and it is reversible after liver transplantation.


Transplantation Proceedings | 2010

Intestinal Transplantation in Children: The First Successful Italian Series

M. Colledan; Paola Stroppa; M. Bravi; Valeria Casotti; A. Lucianetti; D. Pinelli; M. Zambelli; M. Guizzetti; V. Corno; A. Aluffi; V. Sonzogni; Aurelio Sonzogni; Lorenzo D'Antiga; D. Codazzi

The preliminary experience of the first Italian program of pediatric intestinal transplantation is presented herein. A multidisciplinary group with broad experience in pediatric solid organ transplantation started the program. Nine children with complications of chronic intestinal failure were listed for transplantation. One child died on the waiting list; one received an isolated liver transplantation; three isolated intestinal; three multivisceral; and one, a combined liver/intestine transplantation. There was no in-hospital mortality, and all children were weaned from parenteral nutrition. The recipient of the multivisceral graft died after 14 months for unknown causes. All other recipients are alive after a median follow-up of 13 months. Patient and graft actuarial survivals for recipients of intestinal grafts were 100% at 1 year and 75% at 2 years.


Progress in Transplantation | 2018

Value of HCC-MELD Score in Patients With Hepatocellular Carcinoma Undergoing Liver Transplantation:

Gian Piero Guerrini; D. Pinelli; Elena Marini; V. Corno; M. Guizzetti; M. Zambelli; A. Aluffi; Lisa Lincini; S. Fagiuoli; A. Lucianetti; M. Colledan

Context: Liver transplantation (LT) is considered the ideal therapy for patients with hepatocellular carcinoma (HCC) having cirrhosis but the shortage of liver donors and the risk of dropout from the wait list due to tumor progression severely limit transplantation. A new prognostic score, the HCC-model for end-stage liver disease (HCC-MELD), was developed by combining α-fetoprotein (AFP), MELD, and tumor size, to improve risk stratification of dropout in patients with HCC. Objectives: In this study, we investigated the ability of the HCC-MELD score in predicting the posttransplant for patients fulfilling Milan criteria (MC). Design: Two hundred patients with stage II tumor were retrospectively reviewed from a total of 1290 transplants performed at our institution from October 1997 through April 2015. Cox regression analysis was performed to identify the prognostic factors impacting the posttransplant survival. Results: Overall survival at 1, 5, and 10 years was 89.3%, 71.1%, and 67.2%, whereas disease-free survival was 86.4%, 66.5%, and 52.4%, respectively. Multivariate analysis showed HCC-MELD score (hazard ratio [HR] 39.6, P < .001) and microvascular invasion (HR 2.41, P = .002) to be independent risk factors for recurrence, whereas HCC diameter (HR 1.15, P = .041), HCC-MELD (HR 15.611, P = .006), and grading (HR 2.17, P = .03) proved to be predictive factors of poor overall survival. Conclusion: Our study showed the validity of the HCC-MELD equation in the evaluation of patients undergoing LT for HCC. This score offers a reliable method to assess the risk of waiting list dropout and predict posttransplantation outcomes.


Transplantation | 2004

ORTHOTOPIC LIVER TRANSPLANTATION FOR BYLER’S DISEASE

E. Torri; A. Lucianetti; D. Pinelli; V. Corno; M. Guizzetti; G. Maldini; M. Zambelli; Alessandro Bertani; Maria L. Melzi; Daniele Alberti; E. Doffria; G. Torre; Marco Spada; Bruno Gridelli; M. Colledan

In this study we analyzed the features of 12 patients who underwent liver transplantation for progressive familial intrahepatic cholestasis (Bylers disease [BD]) in view of the technical features of the OLTx, incidence and type of complications, need for retransplantation, as well as patient and graft survivals. BD was the indication in 12 patients of median age 1.32 years and median weight 10 kg. Median follow-up was 670 days. Major surgical complications requiring reintervention occurred in three patients. No thrombosis of the hepatic artery was observed. Infections with positive blood cultures were diagnosed in four patients. One patient had a biliary anastomotic stenosis successfully treated by percutaneous techniques. Four patients had episodes of acute rejection treated with steroids. Two patients were retransplanted, both of whom died in the early postoperative period due to hepatic vein thrombosis and venoenteric fistula. The actuarial patient and graft survival was 83% at 1 year and 83% at 5 years. Split-liver grafts represent an excellent organ supply for these patients, achieving good results with no mortality on the waiting list.


Transplantation Proceedings | 2005

Use of Extended Right Grafts From In Situ Split Livers in Adult Liver Transplantation: A Comparison With Whole-Liver Transplants

Marco Spada; Matteo Cescon; A. Aluffi; M. Zambelli; M. Guizzetti; A. Lucianetti; D. Pinelli; Mario Strazzabosco; Bruno Gridelli; M. Colledan

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G. Torre

University of Pittsburgh

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