Recurrence and long-term outcome after open cystectomy with omentoplasty for hepatic hydatid disease in an endemic area

The recurrence rate after primary resection cystic echinococcosis: A meta-analysis and systematic literature review

Cystic echinococcosis (CE) is a chronic, complex, zoonotic disease caused by Echinococcus Granulose tapeworms. The disease may present with a variety of symptoms, ranging from asymptomatic to fatal. Surgical intervention is the primary treatment modality for CE. Despite advances in surgical techniques and chemotherapy, disease recurrence remains a major concern. Therefore, we aimed to determine the true rate of CE recurrence after primary resection and identify possible factors that increase the risk of recurrence. A systematic search of Medline, PubMed, Embase, and Cochran Library was conducted to identify studies reporting the incidence of CE recurrence after primary radical surgery. Data were pooled using random effect models. The disease prevalence was determined by calculating the ratio of CE recurrence and the total number of patients. A meta-regression was conducted to identify any potential factors linked to recurrence. A total of 38 eligible studies, with a total of 6,222 CE patients who underwent primary surgical removal, revealed a pooled recurrence rate of 8% (95% CI: 6%-10%). However, significant heterogeneity was observed (I2 p-value <0.001). Subgroup analysis by region showed the highest incidence of recurrence in European and Turkish studies, with rates of 11% (95% CI: 7%-17%) and 9% (95% CI: 5%-14%), respectively. The lowest recurrence rate was observed in Asian studies, with a rate of 4% (95% CI: 2%-7%). Moreover, the non-radical intervention has a recurrence of 5% (95%CI: 4%-7%), radical 7% (95%CI: 6%-9%), and studies that contained both interventions have 10% (95%CI: 6%-16%), P-value= 0.04. This is the first meta-analysis to evaluate the overall incidence of CE recurrence after primary surgical removal. The study also revealed a substantial degree of heterogeneity across the included studies and indicated possible risk factors for higher recurrence rates, such as the study's geographic area, type of surgery and the year it was published. These findings will help to guide future research in developing effective strategies to prevent or reduce CE recurrence and improve patient outcomes.

Multi-organ/disseminated echinococcosis in children: Case series and review of the literature

AIM

Echinococcosis with multi-organ/disseminated involvement is rare in childhood. We aimed to evaluate the clinical and laboratory characteristics and prognosis in paediatric patients with echinococcosis having multiorgan/disseminated involvement.

METHOD

We evaluated retrospectively children with echinococcosis with involvement of three or more organs.

RESULTS

Thirteen patients were included in the study. The median age was 120 (range 71-189) months. Three (23%) were diagnosed incidentally. Abdominal pain was seen in 5 (38.4%) patients, vomiting in 4 (30.7%), headache in 3 (23%), cough in 2 (15.3%), groin pain in 1 (7.6%), 1 (7.6%) had jaundice and 1 (7.6%) had fever. The median duration of complaints was 48 (0-140) days. The most common tripartite organ was 38.4% (5/13) liver, lung and spleen. Isolated abdominal dissemination was detected in two patients. Two patients had multi-organ involvement and multiple cysts with dissemination. Cyst rupture was observed in three of the patients; recurrent urinary tract infection, hydroureteronephrosis, secondary peritonitis with intra-abdominal abscess, and biliary tract fistula were each observed in one patient. Relapse developed in 3 (23%) patients.

CONCLUSION

Echinococcosis is a very slow growing and complex parasitic disease that affects many organs and tissues. In our study, eosinophilia, recurrence, and complications were seen at a higher rate in paediatric patients with multiorgan involvement, who required repetitive surgeries and long-term medical treatment. However, there are scanty data on risk factors, optimum treatment and prognosis.

Turkish HPB Surgery Association consensus report on hepatic cystic Echinococcosis (HCE)

OBJECTIVES

Cystic Echinococcosis (CE) is one of the important problems of the Eurasian region. We aimed to prepare a consensus report in order to update the treatment approaches of this disease. This study was conducted by Turkish HPB Surgery Association.

MATERIAL AND METHODS

This study was conducted with the modified Delphi model. For this purpose, we conducted a three-stage consensus-building approach.

RESULTS

Six topics, including diagnosis, medical treatment, percutaneous treatment, surgical treatment, management of complications and posttreatment follow-up and recurrences in HCE were discussed.

CONCLUSION

The expert panel made recommendations for every topic.

Closed Cyst Resection for Liver Hydatid Disease: a New Standard

BACKGROUND

Although radical resections are recommended for the surgical management of liver hydatid disease (LHD), whether closed (CCR) or opened (OCR) cyst resections should be performed remains unclear. The aim of this study was to compare the postoperative and long-term outcomes of CCR and OCR for primary and recurrent LHD.

MATERIALS AND METHODS

Medical charts of patients who underwent surgery at a single centre were retrospectively reviewed and compared with respect to major postoperative complications and recurrence rates.

RESULTS

Seventy-nine CCRs and 37 OCRs were included. The major morbidity rates were 19% and 5% in the OCR and CCR groups, respectively (P = 0.036). In multivariate analysis, OCR (P = 0.030, OR = 5.37) and the operative time (P < 0.001, OR = 18.88) were the only independent predictors of major complications. The 5-year and 10-year recurrence rates were both 0% in the CCR group compared to 18% and 27%, respectively, in the OCR group (P < 0.001). The mean time to recurrence was 10.5 (± 8) years.

DISCUSSION

Closed cyst resection for LHD is a safe and effective approach with a low risk of recurrence. Considering that recurrence could appear more than 10 years after surgery, follow-up of patients should be adapted.

Ultrastructural changes in hydatid cyst walls obtained from human cases, exposed to different therapeutic approaches

Recurrence of cystic echinococcosis as a result of treatment failure is frequently reported to cause a major problem in management of such serious parasitic infection. The deeply seated innermost germinal layer of hydatid cysts is a relatively delicate layer, yet responsible for viability maintenance of this parasitic stage. In this study, a trial was done to explore the ultrastructural changes in germinal and laminated layer of the hydatid cyst for the first time in human cases exposed to different therapeutic approaches which were done earlier to the final open surgical intervention. Four groups were included: group 1 did not receive any earlier form of treatment; group 2 was previously treated with only medical therapy; group 3 was treated with a single course of medical treatment, plus a single PAIR technique; group 4 was treated with multiple courses of medical treatment plus multiple PAIR techniques. Complete alteration of ultrastructural features of germinal and laminated layers were observed only with samples from group 4, indicating a kind of failure of the therapeutic approaches used in group, 1, 2, and 3, unless repeated in group 4 to achieve a real change regarding the fitness of the parasitic cystic lesions. Searching for more effective, safe, therapeutic method is highly recommended which may end the suffering of the affected patients.

Recurrence of cystic echinococcosis in an endemic area: a retrospective study

Background

Cystic echinococcosis (CE) is a chronic, complex and neglected zoonotic disease. CE occurs worldwide. In humans, it may result in a wide spectrum of clinical manifestations, ranging from asymptomatic infection to fatal disease. Clinical management procedures have evolved over decades without adequate evaluation. Despite advances in surgical techniques and the use of chemotherapy, recurrence remains one of the major problems in the management of hydatid disease. The aim of this study was to determine the frequency of CE recurrence and the risk factors involved in recurrence.

Methods

A descriptive longitudinal-retrospective study was designed. We reviewed all patients diagnosed with CE according to ICD-9 (code 122–0 to 122–9) criteria admitted at Complejo Asistencial Universitario de Salamanca, Spain, between January 1998 and December 2015.

Results

Among the 217 patients studied, 25 (11.5%) had a hydatid recurrence after curative intention treatment. Median duration of recurrence’s diagnosis was 12.35 years (SD: ±9.31). The likelihood of recurrence was higher [OR = 2.7; 95% CI, 1.1–7.1; p < 0.05] when the cyst was located in organs other than liver and lung, 22.6% (7/31) vs 14.2% (31/217) in the cohort. We detected a chance of recurrence [OR = 2.3; 95% CI, 1.4–6.5; p > 0.05] that was two times higher in those patients treated with a combination of antihelminthic treatments and surgical intervention (20/141, 14.2%) than in patients treated with surgical intervention alone (5/76, 6.6%).

Conclusions

Despite advances in diagnosis and therapeutic techniques in hydatid disease, recurrence remains one of the major problems in the management of hydatid disease. The current management and treatment of recurrences is still largely based on expert opinion and moderate-to-poor quality of evidence. Consequently, large prospective and multicenter studies will be needed to provide definitive recommendations for its clinical management.

A comparison of imaging guided double percutaneous aspiration injection and surgery in the treatment of cystic echinococcosis of liver

OBJECTIVE

To compare the results and complications of treatment by double percutaneous aspiration injection (DPAI) in cystic echinococcosis (CE) of the liver with those of surgery. To the best of our knowledge, such a study has not been carried out till date.

METHODS

From November 2012 to November 2015, 43 patients were randomly allocated to DPAI group (n = 22) and surgery group (n = 21). After the intervention, patients were evaluated monthly for 3 months, then at the sixth month and 6 monthly thereafter.

RESULTS

Average hospital stay was 2.38 days in DPAI group and 8.23 days in the surgery group. Response to DPAI was categorized as successful in 95.3% (n = 20) patients and incomplete in 4.7% (n = 1) patients. Response to surgery was characterized as successful in 85.7% (n = 18) patients and incomplete in 4.7% (n = 1) patients, and recurrence was seen in 9.5% (n = 2) patients. Using a 10% margin for non-inferiority, treatment response in the DPAI group was non-inferior to that of the surgery group. In the DPAI group, 19 patients had no complications, minor complications were seen in 4.7% (n = 1) patients and a major complication was seen in 4.7% (n = 1) patients. In the surgery group, no complications were seen in 13 patients, major complications were seen in 28.57% (n = 6) patients and minor complications were seen in 9.5% (n = 2) patients.

CONCLUSION

Over a follow-up period of 3 years, DPAI is non-inferior to surgery in the treatment of CE of the liver, while there is a statistically significant difference in the hospital stay and occurrence of complications. Advances in knowledge: DPAI offers advantages such as a short hospital stay, minimal invasiveness and morbidity, while being non-inferior to surgery. Total Immunoglobulin G antibody titres have limited utility in follow-up of patients treated.

The Echinococcoses: Diagnosis, Clinical Management and Burden of Disease

The echinococcoses are chronic, parasitic diseases that are acquired after ingestion of infective taeniid tapeworm eggs from certain species of the genus Echinococcus. Cystic echinococcosis (CE) occurs worldwide, whereas, alveolar echinococcosis (AE) is restricted to the northern hemisphere, and neotropical echinococcosis (NE) has only been identified in Central and South America. Clinical manifestations and disease courses vary profoundly for the different species of Echinococcus. CE presents as small to large cysts, and has commonly been referred to as 'hydatid disease', or 'hydatidosis'. A structured stage-specific approach to CE management, based on the World Health Organization (WHO) ultrasound classification of liver cysts, is now recommended. Management options include percutaneous sterilization techniques, surgery, drug treatment, a 'watch-and-wait' approach or combinations thereof. In contrast, clinical manifestations associated with AE resemble those of a 'malignant', silently-progressing liver disease, with local tissue infiltration and metastases. Structured care is important for AE management and includes WHO staging, drug therapy and long-term follow-up for at least a decade. NE presents as polycystic or unicystic disease. Clinical characteristics resemble those of AE, and management needs to be structured accordingly. However, to date, only a few hundreds of cases have been reported in the literature. The echinococcoses are often expensive and complicated to treat, and prospective clinical studies are needed to better inform case management decisions.

Radical Surgery for Liver Hydatid Cyst

Background and aims: Surgery is the basic treatment for liver hydatid cyst (LHC). Radical procedures (pericystectomy (PK) and hepatic resection (HR)) offers better results in selected cases cases than conservative approaches. Aims of this study were to evaluate the results of Radical surgery for LHC and and to determine witch of these two procedures is safe in experienced hepato-biliary surgical unit in endemic countries. Methods: A retrospective cohort study of 143 patients with liver hydatid cyst who underwent radical procedures at a single surgical department in an endemic country were reviewed. Mortality, morbidity and recurrence rates have been analyzed. Results: Thirty-two patients (22.4%) had a HR and 111 patients (77.6%) had a PK. Mortality rate was 1.4% (n=2) in HR group. Overall morbidity rate was 18.9% and vs 28.1% respectively in PK and HR group (p=.26). Postoperative bleeding occurred in 1.8% in PK group vs 3.1% in HR group (p=.535) and specific LHC operative complication occurred in 17.1% in PK group vs 28.1% in HR group (p=.167). Recurrence rate of LHC was 6.3% in PK group vs 6.6% in HR group (p=.999) after a median follow up of 108 months (54-144) vs 89 months (44-135) respectively. Conclusion: Radical surgery for LHC is safe. Each of PK and HR had a specific indication. A good screening of patient's guarantied a good outcome. Keywords: Liver, Hydatid Cyst, Morocco, Radical Surgery.

Risk factors of postoperative morbidity in patients with uncomplicated liver hydatid cyst

PURPOSE

To determine postoperative morbidity (POM) in patients undergoing surgery for uncomplicated hepatic echinococcosis (HE) and determine associations with the variable POM looking for possible risk factors for POM.

METHODS

Nested case-control study. We included patients undergoing surgery for uncomplicated HE in two hospitals in Temuco between 2000 and 2012. The main outcome variable was development of POM. Other variables of interest were hospital stay, mortality and recurrence. Surgical techniques used were pericystectomy and liver resection. Descriptive statistics and analytical statistics were applied using T-test, ANOVA and Kruskal-Wallis test to compare continuous variables; Chi(2) and Fisher's exact test for categorical variables, and logistic regression models were used, estimating OR.

RESULTS

126 patients, median age 41 years, 61% female. The incidence of POM was 10.3%, with 76.9% Clavien grade I or II. The etiology was 6.5% and 4.1% of medical and surgical complications, respectively. There was no mortality and with a median follow-up of 83 months, recurrence incidence was 0.8%. Association was found between cases and controls and the variables age, alkaline phosphatase, cyst location and hospital stay. Applying regression models age (p = 0.002 and OR 1.07) and cyst location (p = 0.003 and OR 3.94) were found to be risk factors.

CONCLUSIONS

Observed POM is lower and of less severity than those previously published. Risk factors were determined.

Treatment of the residual cavity during hepatic hydatidosis surgery: a cohort study of capitonnage vs. omentoplasty

PURPOSE

To determine the efficacy of omentoplasty (OP) and capitonnage (CA) in residual cavity management during the hepatic hydatidosis (HH) surgery in terms of the postoperative morbidity.

METHODS

Prospective cohort study. Patients with non-complicated HH treated with subtotal pericystectomy in the Department of Surgery of the Temuco Regional Hospital between 2001 and 2008 were studied. We compared those managed with CA with those managed with OP. A sample size of 40 patients in each group was estimated to be needed to adequately compare the outcomes of the approaches. The primary endpoint was postoperative morbidity. Descriptive statistics, bivariate analyses and logistic regression models were applied. The absolute risk (AR) and relative risk (RR) were calculated.

RESULTS

The cohorts comprised 88 patients (CA 40 and OP 48), with a median age of 40 years (15-84), and 62.5 % were females. A general postoperative morbidity rate of 11.4 % was noted after a median follow-up of 60 months (12-84 months). Significant differences in postoperative morbidity were found (p = 0.044). Logistic regression models verified that there were no confounding variables. The AR of the postoperative morbidity for the CA and PO cohorts was 0.025 and 0.1875, respectively, and the RR was 0.13 [0.03, 0.70] 95 % CI.

CONCLUSION

Residual cavity management with CA is associated with a lower postoperative morbidity risk than OP.

Does primary surgical management of liver hydatid cyst influence recurrence?

BACKGROUND AND AIMS

Hydatid disease is still a major health problem in sheep-raising areas. Surgery remains the basic treatment for liver hydatid cyst (LHC). However, recurrences can occur after all therapies. Surgery for recurrence of LHC becomes technically more difficult with higher rate of morbidity and mortality. The aim of this study was to determine perfective factors associated to hepatic recurrence after LHC surgery and to propose and discuss postoperative follow-up schedules.

METHODS

It is a retrospective cohort study of 672 patients with LHC treated at the surgery department "A" at Ibn Sina University Hospital, Rabat, Morocco, from January 1990 to December 2004. Recurrence rates have been analyzed by the Kaplan-Meier method for patients undergoing surgery.

RESULTS

Fifty-six patients (8.5%) had LHC recurrence after surgery. There were 34 females (60.7%) and 22 males (39.3%). Median duration of recurrence's diagnosis was 24 months (interquartile range: 10-48 months). Recurrence's risk was 2.3% +/- 0.6% at 1 year and 9.1% +/- 1.3% at the 10th year. The history of LHC (hazard ratio, 2; 95% confidential interval, 1.13-3.59) and three cysts or more (hazard ratio, 3.8; 95% confidential interval, 2.07-6.98) was an independent risk factor for recurrence.

CONCLUSION

We think that the surgeon's practice and experience are the most important to success the surgical treatment. It prevents complications and recurrences.

Clinical management of cystic echinococcosis: state of the art, problems, and perspectives

Clinical management of cystic echinococcosis (CE) has evolved over decades without adequate evaluation of important features such as efficacy, effectiveness, rate of adverse reactions, relapse rate, and cost. CE occurs in health care environments as different as Europe/North America and resource-poor countries of the South and the East. This creates setting-specific problems in the management of patients. Furthermore, studies carried out in either of the two fundamentally different environments lack external validity, i.e., results obtained in one setting may be different from those in the other and practices that can work in one may not be applicable to the other. In this paper, we review the current management procedures of CE with particular emphasis on the evidence base and setting-specific problems.

Albendazole for the treatment of human echinococcosis: a review of comparative clinical trials

BACKGROUND

Albendazole has been used in various ways in the treatment of cystic echinococcosis (CE).

METHODS

We reviewed the available evidence regarding the role of albendazole for the treatment of patients with CE. The available comparative clinical trials (randomized or not) that examined the use of albendazole in CE were identified from the PubMed and the ISI Web of Science databases. Relevant data from the trials were extracted and evaluated.

RESULTS

Thirteen studies were included in the review. Albendazole is superior to placebo for inoperable, symptomatic patients (1 study). In addition, in 4 trials that tested albendazole as a preoperative adjuvant therapy, the drug resulted in degeneration of hydatid cysts at the time of surgery in a considerable proportion of patients. Furthermore, combined therapy with albendazole and PAIR (Puncture, Aspiration, Injection of scolicidal agent, and Re-aspiration) technique was found more effective than albendazole or PAIR treatment alone, in a randomized controlled trial examining this issue. Finally, although existing evidence shows some superiority for albendazole compared to mebendazole, there is no definite proof about this.

CONCLUSIONS

Although the available comparative trials provide considerable evidence for the role of albendazole in patients with CE, there are some important clinical questions that remained unanswered by the studies. One of them is whether the combination of albendazole with praziquantel is superior to albendazole alone when both effectiveness and drug toxicity are taken into account. Also, further studies should also compare the combination of albendazole/PAIR with albendazole/surgery focusing on both short and long term outcomes.

[Precision of ELISA-IgE and ELISA-IgG determination in the postoperative follow-up of patients with hepatic echinococcosis]

INTRODUCTION

Follow-up of patients undergoing surgery for hepatic echinococcosis (HE) is essential to ensure the absence of infection. The aim of this study was to determine the behavior over time of specific IgG and IgE to Echinococcus granulosus determined by the ELISA technique (ELISA-IgG and ELISA-IgE) in patients undergoing surgery for HE.

MATERIAL AND METHOD

We performed a concurrent cohort study of patients who underwent surgery for HE between 1994 and 2003 in the Regional Hospital of Temuco, Chile. Non-probabilistic convenience sampling was performed in patients with a minimum follow-up of 48 months and annual qualitative determinations of ELISA-IgE and ELISA-IgG. Descriptive statistics were applied, with calculation of percentages, medians, and extreme values.

RESULTS

Fifty-two patients were studied, of whom 38 (73.1%) were women. The median age was 40 years (16 to 75 years). Most of the patients had a single cyst (34 patients, 65.4%); the median cystic diameter was 12 cm. In 35 (67.3%) patients, biliary communications were found. Progressive negativization of ELISA-IgE and ELISA-IgG was observed, reaching 98% and 84% in the fourth year of follow-up respectively. Erratic behavior of ELISA-IgG was detected, with a change from negative to positive in 11% of the patients, none of whom had radiological or ultrasonographic evidence of cysts in the thorax or abdomen.

CONCLUSIONS

A high percentage of negativization of ELISA-IgE was observed. The erratic behavior of ELISA-IgG is difficult to interpret.