A "Trapped Heart" in an Octopus Pot: Takotsubo Cardiomyopathy; Review of a Rare Clinical Syndrome Following Solid-Organ Transplant.

OBJECTIVES: Takotsubo cardiomyopathy, also known as "broken heart syndrome," "apical ballooning syndrome," and "stress-induced cardiomyopathy," was first des cribed in Japanese patients in 1990 by Sato and colleagues. Takotsubo cardiomyopathy is an increasingly recognized syndrome characterized by transient and reversible systolic dysfunction of the apical and middle segments of the left ventricle. This syndrome resembles acute myocardial infarction in the absence of evident coronary artery occlusion. Although the precise pathophysiology of takotsubo cardiomyopathy is still unknown, it seems that it is associated with excessive sympathetic stimulation, microvascular dysfunction, coronary artery vasospasm, and abnormal myocardial tissue metabolism. MATERIALS AND METHODS: Herein, we sought to recognize and summarize the available literature data on Takotsubo cardiomyopathy regarding solid-organ transplant, in an attempt to provide the demographic and morphologic functional characteristics of patients with Takotsubo cardiomyopathy and related clinical implications. RESULTS AND CONCLUSIONS: Transplant surgeons should maintain a high index of clinical suspicion and never underestimate takotsubo cardiomyopathy as a potential cause of heart failure following solid-organ transplant.

Liver transplantation in patients with liver metastases from neuroendocrine tumors: A systematic review.

BACKGROUND: Liver transplantation to treat neuroendocrine tumors, especially in the setting of diffuse liver involvement not amenable to operative resection remains controversial. We sought to perform a systematic review of the current literature to summarize data on patients undergoing liver transplantation with neuroendocrine tumors liver metastases as the indication. METHODS: A systematic review was conducted in accordance to the Preferred Reporting Items for Systematic reviews and Meta-Analysis guidelines. Eligible studies were identified using 3 distinct databases through March 2017: Medline (PubMed), ClinicalTrials.gov, and Cochrane library, Cochrane Central Register of Controlled Trials using a search algorithm: "(neuroendocrine or NET) and transplantation and liver." RESULTS: From the 1,216 records retrieved, 64 studies were eligible. Overall, 4 studies presented data from registries, namely the European Liver Transplant Registry and the United Network for Organ Transplantation/Organ Procurement and Transplantation Network databases, 3 were multicenter studies. The largest cohort of data on patients undergoing liver transplantation for neuroendocrine tumors liver metastasis indication were from single center studies comprising a total of 279 patients. Pancreas was the primary tumor site for most patients followed by the ileum. Several studies reported that more than half of patients presented with synchronous disease (55.9% and 57.7%); in contrast, metachronous neuroendocrine tumors liver metastasis ranged from 17.7% to 38.7%. Overall, recurrence after liver transplantation ranged from 31.3% to 56.8%. Reported 1-, 3-, and 5-year overall survival was 89%, 69%, and 63%, respectively. Several prognostic factors associated with worse long-term survival including transplantation >50% liver tumor involvement, high Ki67, as well as a pancreatic neuroendocrine tumors versus gastrointestinal neuroendocrine tumors tumor location. CONCLUSION: Liver transplantation may provide a survival benefit among patients with diffuse neuroendocrine tumors metastases to the liver. However, due to high recurrence rates, strict selection of patients is critical. Due to the scarcity of available grafts and the lack of level 1 evidence, the recommendations to endorse liver transplantation for extensive liver neuroendocrine tumors metastases warrants ongoing deliberations.

Liver transplantation for unresectable colorectal liver metastases: A systematic review.

The use of liver transplantation (LT) for liver metastases attempted in the early 1990's was associated with poor perioperative outcomes and unacceptably low overall survival. Recently, there has been renewed interest in LT as a treatment option for colorectal liver metastases (CLM) in countries where organ supply is high. To date, no meticulous analysis about the efficacy, safety and outcomes of LT in CLM patients has been published. We present the first systematic review on the subject.

Hepatocellular carcinoma development in non-alcoholic fatty liver disease and non-alcoholic steatohepatitis. Is it going to be the "Plague" of the 21st century? A literature review focusing on pathogenesis, prevention and treatment.

Liver carcinogenesis in non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) is a subject of intense research nowadays, since NAFLD is the most common chronic liver disease, affecting a great percentage of the population worldwide, while hepatocellular carcinoma (HCC), which represents the most common primary liver malignancy, is the third leading cause of cancer-related mortality. The underlying pathogenic pathways of both NAFLD and HCC are not completely understood, but there is growing evidence that they share many common pathophysiologic mechanisms and risk factors. Due to lack of solid evidence, though, the ultimate goal of designing effective diagnostic tools, treatment options and screening policies remain unmet for the time being. This review article aims to present recent data available regarding pathogenesis, diagnosis and management of HCC and NAFLD, as well as to highlight the importance of the development of HCC in the setting of NAFLD and NASH.

Arteriovenous renal replacement therapy in end-stage left-sided heart failure patients has a detrimental effect on patients with impaired right ventricular function.

OBJECTIVE: Chronic intermittent renal replacement therapy(RRT) is an alternate method of decongestion for patients presenting with diuretic-resistant, end-stage heart failure(HF) and cardiorenal syndrome. The optimal method of vascular access has not been confirmed. This study investigated the 6-month outcomes of patients with end-stage HF after the creation of arteriovenous communications (AVC) compared with other means of RRT. METHODS: We treated 40 patients with chronic, intermittent, ambulatory RRT, of whom 15 (37.5%; Group A) underwent creation of AVC, and 25 (62.5%; Group B) received intraperitoneal (n=6) or internal jugular catheters (n=19) with the goal of achieving body weight stabilization and relief from congestion. RESULTS: The characteristics of the two groups were similar. According to Cox regression analysis, the 6-month rate of death or re-hospitalization for HF was significantly higher in Group A (73%) than in Group B (44%); hazard ratio (HR): 2.58; 95% confidence interval (CI) 1.2-6.2; P=0.02. Over a 6-month follow-up, the cumulative survival was significantly shorter (P=0.03) in Group A (13.8±10 weeks) than in Group B (20.7±7 weeks). In the 15 patients who received AVC, the only independent predictor of adverse outcome at 6 months was serum total bilirubin concentration (HR 2.5; 95% CI 1.1-5.7, p=0.02), whereas in the 25 patients who underwent other means of RRT, pulmonary vascular resistance (PVR) was identified as a risk factor for hospitalization or death at 1-year follow-up (HR 1.26; 95% CI 1.1-1.57, p=0.04). CONCLUSION: In patients with end-stage HF, the creation of AVC for intermittent RRT was followed by a significant increase in morbidity and mortality in comparison to the safe and effective placement of permanent central venous catheters. Patients with elevated PVR seem to comprise a group at high risk for adverse outcomes after central catheter insertion.

Parenchymal-sparing Hepatectomy as the New Doctrine in the Treatment of Liver-metastatic Colorectal Disease: Beyond Oncological Outcomes.

Colorectal cancer is one of the leading causes of mortality in the Western world. Half of patients with colorectal cancer will develop liver-metastatic (CLM) disease, with fewer than 30% having surgically resectable disease at diagnosis. It is well established in the literature that major hepatectomy offers a high rate of R0 resection, however, with concommitant increased rates of mortality and morbidity. Emerging literature during the past two decades has demonstrated the potential superiority of parenchymal-sparing hepatectomy (PSH) in treating CLM disease in terms of oncological outcomes, survival and re-operation in cases of recurrence (salvageability). To date, no data regarding the evaluation of quality of life and cost after PSH have been published. PSH seems to be correlated with less mortality and morbidity, which can be translated in lower re-admission rates, better quality of life and, therefore, reduced relevant cost. Prospective studies and clinical trials evaluating the multiple beneficial role of a PSH surgical strategy in CLM disease are mandatory to support or reject the emerging belief that PSH could be the gold standard of treatment of CLM disease.

Intestinal Perforation in Renal Transplant Recipients: A Single Center Experience of 2123 Recipients.

OBJECTIVES: Intestinal perforation remains a clinical challenge and potentially lethal complication in renal transplant recipients. Immunosuppression not only places the patient at risk for intestinal perforation but also masks classic clinical symptoms and signs of acute abdominal pain, leading to delayed diagnosis and proper treatment. The aim of our study is to present the experience of our center on the treatment of intestinal perforation in renal transplant recipients. MATERIALS AND METHODS: This study reported 11 patients (0.52%) with intestinal perforation among a group of 2123 patients who received renal transplants in the Transplantation Unit at Laikon General Hospital in Athens, Greece from 1983 to August 2015. RESULTS: One patient died from septic shock before any surgery, and 3 patients died during the early postoperative period, resulting in a morality rate of 36.3%. All patients who died had a functioning graft. From the patients who were discharged, the mean follow-up was 16 months (range, 4-32 months). CONCLUSIONS: Intestinal perforation after renal transplant is a major and potentially lethal complication. Clinical presentation is usually equivocal, and the transplant surgeon should be highly suspicious when treating a renal transplant recipient with acute abdominal pain, even in cases without other predisposing factors (diverticulitis, ischemic colitis, and so forth), so that this condition could be investigated and unmasked.

De Novo Visceral Malignancies in Renal Transplant Recipients: A Single Center Experience of 2054 Recipients for More Than 30 Years.

OBJECTIVES: We report the incidence and pattern of malignancies in renal transplant recipients from our department. MATERIALS AND METHODS: Between March 1983 and August 2013, the records of 2054 renal transplant recipients from our department were retrospectively reviewed with regard to type of neoplasm, age, gender, interval between the transplant and the diagnosis of malignancy, immunosuppressive regimens, graft functional status, and rejection episodes. RESULTS: Among the 2054 renal transplant recipients, visceral malignancies developed in 74 patients (3.6%). The mean age at transplant was 43.9 years, and the mean age at death was 61.9 years. Sixty-eight patients (91.9%) died with a functioning graft. Fifty-four (73%) died during follow-up. The mean time from transplant to malignancy was 96.4 months, and from malignancy to death was 27.5 months. No difference regarding the type of immunosuppression, the type of donor, or the interval between transplant and malignancy was detected when we compared cancers. CONCLUSIONS: Malignancies after a renal transplant display aggressive behavior and occur more frequently several years after the transplant, but they also may occur earlier. The type of immunosuppression, the type of donor, or the interval between transplant and malignancy do not differ significantly among cancers.

Endometriosis in a spigelian hernia sac: an unexpected finding.

Describes the existence of endometrioma in a spigelian hernia sac. Spigelian Hernia is a rare ventral hernia, presenting difficulties in diagnosis and carrying a high incarceration and obstruction risk. Endometriomas occur due to implantation of endometrial cells into a surgical wound, most often after a cesarean delivery. A 37-year-old woman presented to our department with persistent abdominal pain, exacerbating during menses, and vomiting for 2 days. Physical examination revealed a mass-like lesion in the border between the left-upper and left-lower quadrant. Ultrasound examination was inconclusive and a computed tomography scan of the abdomen revealed an abdominal wall mass. During surgery, a spigelian hernia was found 5 to 7 cm above a previous cesarean incision. Tissue like "chocolate cysts" was present at the hernia sac. Hernia was repaired while tissue was excised and sent for histological examination that confirmed the diagnosis. Spigelian hernia is a hernia presenting difficulties in diagnosis and treatment. Endometrioma in a spigelian hernia sac is a rare diagnosis, confirmed only histologically. Clinical suspicion can be posed only through symptoms and thorough investigation.

Clostridium difficile infection among kidney transplant recipients: frequency, clinical presentation, and outcome.

The objective of this study was to evaluate the frequency of Clostridium Difficile Infection (CDI) among kidney transplant recipients and describe the clinical picture in correlation with the presence of certain risk factors. We included kidney transplant recipients with a functioning graft, who were admitted during the period 1/2012-12/2013, and patients with ESRD who were admitted to undergo Kidney Transplantation (KTx) from a deceased or a living donor in the same period. Patients were screened following clinical indication of gastrointestinal infection. CDI diagnosis was based on a positive stool sample for CD toxins and stool culture. Within the period 2012-2013, we recorded 24 cases of CDI in 19 patients, accounting for a frequency of 5.4% of CDI in our population. In addition to diarrhea, 63.15% of the patients presented with fever, 31.25% with anorexia, while abdominal pain was a rare symptom (0.53%). None of the patients had ileus, bowel obstruction or megacolon. Fourteen patients (73.7%) had a history of recent exposure (15 days) to antimicrobial agents prior to the evolution of CDI symptoms. A relapse of the CDI infection was identified in five cases. CDI infection is a significant factor of morbidity in patients with KTx and should be considered in the clinical setting of diarrhea, even in cases with no exposure to antibiotic agents.

An Uncommon Complication of a Common Procedure.

Constant, safe and reliable endovascular access is necessary for patients' diagnosis and treatment. Endovascular access is possible with a variety of means, including central and peripheral venous catheters. Peripheral catheterization is an extremely common medical procedure and is considered risk-free or associated with minimal complications. Still potentially serious complications can occur. Authors describe a rare case of peripheral catheter migration at left pulmonary artery in an immunosuppressed patient.

Secondary hyperoxaluria: a risk factor for kidney stone formation and renal failure in native kidneys and renal grafts.

Secondary hyperoxaluria is a multifactorial disease affecting several organs and tissues, among which stand native and transplanted kidneys. Nephrocalcinosis and nephrolithiasis may lead to renal insufficiency. Patients suffering from secondary hyperoxaluria, should be promptly identified and appropriately treated, so that less renal damage occurs. The aim of this review is to underline the causes of hyperoxaluria and the related pathophysiologic mechanisms, which are involved, along with the description of seven cases of irreversible renal graft injury due to secondary hyperoxaluria.