Ultrasonographic evaluation of the gallbladder motor function in the diagnosis and prognosis of intrahepatic cholestasis of pregnancy.

BACKGROUND: Intrahepatic cholestasis of pregnancy (ICP) is characterized by skin pruritus, elevated liver enzymes, and increased serum total bile acids. Several previous studies have revealed that the fasting and ejection volumes of the gallbladder in cholestasis of pregnancy are greater than those in normal pregnancy. The goal of this study was to explore the gallbladder volume and evaluate the diagnostic and prognostic value of ultrasound in ICP. METHODS: We prospectively recruited a cohort of 60 ICP patients at the First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China from January 2020 to December 2021 and compared their data with those from healthy pregnant women (n = 60). The gallbladder volume was evaluated by real-time ultrasound examination after overnight fasting and at 30, 60, 120, and 180 min after a liquid test meal of 200 mL, and the ejection fraction was calculated. Continuous data between two groups were compared by Student's t test. Differences were considered significant for p < 0.05. The diagnostic and prognostic value of the volume and ejection function of the gallbladder was analyzed by the receiver operating characteristic (ROC) curve. RESULTS: The ICP group had significantly higher gallbladder basal volume (43.49 ± 1.34 cm3 vs. 26.66 ± 0.83 cm3, p < 0.01) and higher ejection fraction compared with the healthy group. The ejection fraction higher than 54.55% at 120 min might predict ICP diagnosis with 96.67% sensitivity and 88.33% specificity, and an AUC of 0.9739 (95% CI 0.9521-0.9956), while the gallbladder volume higher than 12.52 cm3 at 60 min might predict ICP severity with 59.18% sensitivity and 72.73% specificity, and an AUC of 0.7319 (95% CI 0.5787-0.8852). CONCLUSION: Our results indicate abnormal volume and ejection function of the gallbladder in patients with ICP. The ejection fraction at 120 min can assist in the diagnosis if ICP exists, and the gallbladder volume at 60 min may assess the degree of severity of ICP.

Could real-time sonoelastography-measured placental strain ratio (PSR) value be a soft marker for the diagnosis of intrahepatic cholestasis of pregnancy?: A case-control study and short reviews.

Diagnosis of intrahepatic cholestasis of pregnancy (ICP) is often decided upon with typical pruritus supported by elevated serum bile acid levels. However, there is confusion regarding the absolute reference range for serum bile acid . To confirm the utility of Placental Strain Ratio (PSR) measurement as a marker for the diagnosis of ICP and to reveal the extent to which it is correlated with serum bile acid concentration. A case-control study was conducted. The case group included 29 patients who were admitted to our hospital in the second or third trimester of pregnancy with typical itching and were clinically diagnosed with ICP with >10 mmol/L serum bile acid. The first 45 pregnant women were assigned to a control group. Real-time tissue elastography software was used for ultrasound assessment of all pregnant placentas. Software was used to estimate the SR values. Biochemical liver function parameters, hemograms, serum bile acid levels, and SR values were compared between these groups. PSR was found to predict the development of cholestasis with poor discrimination (area under the curve [AUC] = 0.524; 95% CI = 0.399-0.646). The optimal threshold value with the best sensitivity and specificity rates was calculated to be 0.46 PSR. ICP developed significantly more frequently in the low PSR group than in the high PSR group (60% vs 29.3%, P  = .05, odds ratios [OR] = 0.276, 95% CI = 0.069-1.105). No correlation was found between the PSR and bile acid levels (rho = -0.029, P  = .816). PSR values can support the diagnosis of ICP, predict serum bile acid levels, and can be used as soft markers.

Modified myocardial performance index for evaluation of fetal heart function and perinatal outcomes in intrahepatic pregnancy cholestasis.

This study aims to evaluate cardiac function in cases of intrahepatic cholestasis of pregnancy (ICP) and compare results with those from healthy controls using the fetal left ventricular modified myocardial performance index (LMPI) and E-wave/A-wave peak velocities (E/A ratio). Moreover, the association between LMPI values, total bile acid (TBA) levels, fetal Doppler measurements, and adverse neonatal outcomes was evaluated. A prospective cross-sectional study of 120 pregnant women was conducted, with 60 having ICP and the other 60 serving as controls. Doppler ultrasound and two-dimensional gray-scale fetal echocardiography were used to calculate the LMPI values and E/A ratios, respectively. The association between LMPI values and TBA levels, fetal Doppler measurements, and adverse neonatal outcomes was evaluated. Fetal LMPI values were significantly higher in the ICP group than in the control group (0.54 ± 0.54 vs. 0.44 ± 0.03; p < 0.001), but the E/A ratio was similar in both groups (0.69 ± 0.10 vs. 0.66 ± 0.14; p = 0.203). TBA levels were positively and significantly correlated with LMPI values (r = 0.546, p < 0.01); however, no significant correlation was found between umbilical arterial pulsatility index values and LMPI values (r = 0.071, p > 0.01). LMPI values were not associated with adverse neonatal outcomes in ICP cases. Fetal cardiac function (LMPI) is associated with increased bile acid levels in ICP. However, because it was not associated with adverse neonatal outcomes in ICP cases, the clinical significance of this finding is unclear. Further studies are required to evaluate the implications of increased LMPI.

Efficacy of fetal left ventricular modified myocardial performance index in predicting adverse perinatal outcomes in intrahepatic cholestasis of pregnancy.

OBJECTIVE: This study aimed to evaluate the effectiveness of fetal left ventricular modified myocardial performance index in predicting adverse perinatal outcomes for intrahepatic cholestasis of pregnancy. METHODS: A cross-sectional study was conducted, including 51 women with intrahepatic cholestasis of pregnancy and 80 healthy controls. Using Doppler ultrasonography, E-wave, A-wave, isovolumetric contraction time, isovolumetric relaxation time, and ejection time were recorded and the left ventricular modified myocardial performance index was measured. RESULTS: Findings showed that the mean left ventricular modified myocardial performance index, isovolumetric contraction time, and isovolumetric relaxation time values were statistically significantly higher while the ejection time and E/A ratios were statistically significantly lower in the intrahepatic cholestasis of pregnancy group than the control group. In the intrahepatic cholestasis of pregnancy group, a statistically significant positive correlation was found between left ventricular modified myocardial performance index and adverse perinatal outcomes in the intrahepatic cholestasis of pregnancy group (r=0.478, p<0.001), while a statistically significant negative correlation was found between the E/A ratio and adverse perinatal outcomes (r=-0.701, p<0.001). CONCLUSIONS: For intrahepatic cholestasis of pregnancy cases, high fetal left ventricular modified myocardial performance index values were an indicator of ventricular dysfunction, and this correlated with negative perinatal outcomes.

Fetal cardiac dysfunction in pregnancies affected by intrahepatic cholestasis of pregnancy: A cohort study.

AIM: To analyze the presence of fetal myocardial dysfunction in intrahepatic cholestasis of pregnancy (ICP) at diagnosis. METHODS: This prospective cohort study included 49 pregnant participants with ICP at diagnosis and 49 nonaffected controls from a single public hospital. ICP was diagnosed based on clinical symptoms after excluding other causes of pruritus and presence of autoimmune diseases. Total bile acids were not obtained in this cohort. ICP pregnancies were assessed with a functional echocardiography at diagnosis including PR-interval, isovolumetric contraction time (ICT), ejection time (ET), and isovolumetric relaxation time (IRT) for electrical, systolic, and diastolic function, respectively. Controls were assessed at recruitment. Perinatal outcomes were obtained from delivery books. The main outcome was the presence of PR-interval prolongation or first-degree fetal heart block, and echographic signs of diastolic and systolic dysfunction. RESULTS: Compared to controls, ICP were above upper limit in conjugated bilirubin (2.0% vs. 20.4%; p = 0.008), aspartate aminotransferase (2.0% vs. 24.5%; p = 0.002), and alanine aminotransferase (4.1% vs. 28.6%; p = 0.002). ICP was associated with a higher PR-interval (130 ± 12 ms vs. 121 ± 6 ms; p < 0.0001) with five first-degree fetal heart blocks. IRT was significantly higher in ICP (42 ± 6 ms vs. 37 ± 5 ms; p = 0.0001), with no differences in ICT and ET. PR-interval trend was only positively correlated with IRT in ICP pregnancies (p = 0.04 and p = 0.34, in ICP and controls, respectively). CONCLUSIONS: Our study demonstrates that fetuses affected by maternal ICP are associated with electrical and diastolic myocardial dysfunction. More studies focused on antenatal and postnatal functional echocardiography are necessary to validate our results and consider these markers in the clinical management of ICP pregnancies.

Case report of pure single-port robotic left lateral sectionectomy using the da Vinci SP system.

INTRODUCTION: Since its first appearance in the early 1990s, laparoscopic hepatic resection has become increasingly accepted and recognized as safe as laparotomy. The recent introduction of robotic surgery systems has brought new innovations to the field of minimally invasive surgery, such as laparoscopic surgery. The da Vinci line of surgical systems has recently released a true single-port platform called the da Vinci SP system, which has 3 fully wristed and elbowed instruments and a flexible camera in a single 2.5 cm cannula. We present the first case of robotic liver resection using the da Vinci SP system and demonstrate the technical feasibility of this platform. PATIENT CONCERNS AND DIAGNOSIS: A 63-year-old woman presented with elevated liver function test results and abdominal pain. Computed tomography (CT) and magnetic resonance cholangiopancreatography showed multiple intrahepatic duct stones in the left lateral section and distal common bile duct stones near the ampulla of Vater. INTERVENTIONS: The docking time was 8 minute. The patient underwent successful da Vinci SP with a total operation time of 135 minute. The estimated blood loss was 50.0 ml. No significant intraoperative events were observed. OUTCOMES: The numerical pain intensity score was 3/10 in the immediate postoperative period and 1/10 on postoperative day 2. The patient was discharged on postoperative day 5 after verifying that the CT scan did not show any surgical complications. CONCLUSION: We report a technique of left lateral sectionectomy, without the use of an additional port, via the da Vinci SP system. The present case suggests that minor hepatic resection is technically feasible and safe with the new da Vinci SP system in select patients. For the active application of the da Vinci SP system in hepatobiliary surgery, further device development and research are needed.

3D-reconstruction and heterotopic implantation of reduced size monosegment or left lateral segment grafts in small infants: A new technique in pediatric living donor liver transplantation to overcome large-for-size syndrome.

BACKGROUND: Monosegmental grafts and reduced left lateral segment grafts have been introduced to overcome the problems of large-for-size grafts in pediatric living donor liver transplantation. Here, we introduce a new method of reduced size monosegment or left lateral segment grafts transplanted in the right diaphragmatic fossa heterotopically in small infants. METHODS: There were 4 infants who underwent living donor liver transplantation with heterotopically implanted reduced monosegmental or left lateral segment grafts at our center. The demographic, operative, postoperative, and follow-up data of these infants were collected from our prospectively designed database and reviewed. Technical details of the donor and recipient operation are shared and a supplemental provided. RESULTS: The mean recipient age was 7.5 ± 0.9 months (range: 5-10 months), and body weight was 5.9 ± 0.7 kg (range: 4.6-7.8). Primary diagnoses of the recipients were biliary atresia (n:3) and progressive familial intrahepatic cholestasis (n:1). Mean graft-recipient weight ratio was 3.3 ± 0.2. Reduced monosegment III grafts were used in 2 cases, and reduced left lateral segment grafts were used in the other 2 patients. Bile duct reconstruction was done by Roux-en-Y hepaticojejunostomy in 3 patients and duct-to-duct anastomosis in the remaining patient. All patients recovered from the liver transplantation operation and are doing well at a mean follow-up of 8 months. CONCLUSION: Living donor liver transplantation with heterotopically implanted reduced monosegmental or left lateral segment seems feasible for the treatment of neonates and extremely small infants. Further accumulation of cases and long-term follow-up are necessary to collect data for the establishment of this treatment modality.

Assessment of Mechanical Fetal PR Interval in Intrahepatic Cholestasis of Pregnancy and Its Relationship with the Severity of the Disease.

OBJECTIVE: This study aimed to investigate the fetal atrioventricular conduction system in intrahepatic cholestasis of pregnancy (ICP) by measuring the fetal mechanical PR interval and to explore the significance of predicting the severity of the disease. STUDY DESIGN: Forty pregnant women diagnosed with ICP, classified as severe and mild, and 40 healthy pregnant women participated in the study. Fetal mechanical PR interval was calculated, and fetal mechanical PR interval and neonatal outcome were compared between the groups. The relationship between the mechanical PR interval and the severity of ICP was analyzed. RESULTS: The fetal mechanical PR interval was significantly longer in the ICP group than in the control group (p < 0.005). Likewise, laboratory parameters such as transaminases (alanine aminotransferase [ALT], aspartate aminotransferase [AST]) and total bilirubin levels were significantly higher in the ICP group (p < 0.005).There were no statistically significant differences in the fetal complications. There was a positive correlation between the severity of disease and fetal PR interval. CONCLUSION: A prolonged fetal mechanical PR interval in fetuses of mothers with ICP was demonstrated in this study. It was also shown that there was a positive correlation between fetal PR interval and severity of the disease. The study concluded that fetal mechanical PR interval measurement can be used to predict the severity of disease in ICP.

Portal hypertension evolving from sickled hepatopathy: Could hepatic venous Doppler ultrasound be beneficial in its evaluation?

PURPOSE: Sickle cell intrahepatic cholestasis involves sickling within hepatic sinusoids leading to vascular stasis and localized hypoxia resulting in ballooning of the hepatocytes causing a direct back pressure effect with resultant intracanalicular cholestasis. Vascular stasis may ultimately lead to portal hypertension. We proposed to document findings suggestive of portal hypertension evolving from hepatopathy in steady-state sickle cell disease (SCD) patients using hepatic venous Doppler ultrasound. METHODS: This is a prospective case series of 6 SCD subjects in steady-state (median age, 30 years; range, 19-43), comprising of 3 males and 3 females, who underwent a routine Doppler ultrasound evaluation of their hepatic veins and were discovered to have an abnormal biphasic waveform pattern. Venous blood was obtained from all subjects to evaluate for P-selectin, homocysteine, foetal haemoglobin, haematocrit levels, white cell and platelet counts. Doppler ultrasound was also carried out on all subjects to evaluate for the hepatic waveform, right renal artery RI and PI along with the hepatic artery velocities. RESULTS: All the 6 subjects had reduced haematocrit (median value of 21.5%; range, 18-25%) and some degree of renal dysfunction (plasma cystatin-C ranged from 1.6 to 12.2 mg/L). Elevated white cell count, hyperhomocysteinemia, reduced SpO2(<94.0%) and reduced estimated GFR (eGFR < 90 ml/min) was also noted in 4 subjects (66.7%). Similarly, 4 subjects (66.7%) had elevated RI in the right kidneys while 3 subjects (50.0%) had elevated PI in the right kidney. CONCLUSION: Doppler ultrasound Hepatic vein waveform analysis may be a useful examination in the evaluation of patients with SCD as it may elicit feature of portal hypertension. Further studies are suggested to confirm this in a larger population of SCD patients using the gold standard.

Segmental intrahepatic cholestasis as a technical complication of the transjugular intrahepatic porto-systemic shunt.

BACKGROUND: Segmental intrahepatic cholestasis caused by transjugular intrahepatic portosystemic shunt (TIPS) (SIC-T), is a rare complication of this technique and only referred by case reports. Thus, we conducted a systematic, retrospective analysis to provide evidence regarding prevalence and consequences of this TIPS-induced bile duct compression. AIM: To assess prevalence and outcome of SIC-T in a large TIPS-cohort. METHODS: In this retrospective cohort study, we screened the institutional databases for all consecutive patients that were treated by TIPS-placement or TIPS-revision between January 2005 and August 2013. We analyzed radiologic images for signs of biliary congestion. Cases that were indicative of SIC-T were reviewed by two independent radiologists and additional patient data was collected. Descriptive statistics of patient demographics, indications for TIPS and procedural details were registered. Logistic regression analysis was performed to identify predictors for the development of SIC-T. RESULTS: We analyzed 135 cirrhotic patients who underwent TIPS (mean age 55 years, 79% male gender). Etiology of cirrhosis was alcohol in most cases and indications for TIPS were mainly refractory ascites and recurrent variceal bleeding. TIPS revision was necessary in 31 patients. We identified 4 cases (2.9%) of SIC-T in direct proximity of the TIPS-stent. Diagnosis was confirmed by CT-scan, MRI or endoscopic retrograde cholangio pancreaticography (ERCP). In two patients TIPS was implanted via the right and in one through the medial hepatic vein. One patient received TIPS-prolongation by multiple revisions. Most patients were asymptomatic but one cholangitic abscess necessitated a transhepatic drain. Logistic regression analysis identified TIPS-placement other than from medial hepatic vein to right portal vein as risk factor (OR 21.0) for SIC-T. CONCLUSION: SIC-T ads to (mostly late) complications in the interventional treatment of cirrhotic portal hypertensions and can lead to cholangitic abscesses. Patients, particularly with multiple interventions, should be screened for SIC-T.

Gammagrafía hepatobiliar en el estudio de las complicaciones del trasplante hepático en adultos. Descripción de la experiencia / Hepatobiliary scintigraphy in the study of complications in adult patients after liver transplant. Description of the experience

OBJETIVO: Mostrar la experiencia del uso de la gammagrafía hepatobiliar en pacientes con sospecha de complicaciones biliares postrasplante hepático en un centro de alta complejidad. MATERIAL Y MÉTODO: Estudio retrospectivo, observacional y descriptivo. Se incluyeron todos los pacientes consecutivos adultos con trasplante hepático entre enero de 2013 y febrero de 2018, con una o más gammagrafías hepatobiliares durante el postoperatorio temprano o tardío. Se analizaron un total de 58 gammagrafías hepatobiliares en 38 pacientes (22 hombres y 16 mujeres). Edad media: 48 años. En 34/38: donante cadavérico (89%), y en 4 (11%): donante vivo. Se obtuvieron otros datos demográficos e información relevante respecto al trasplante y se relacionó el resultado con los hallazgos quirúrgicos para determinar la correlación entre ambos. Se evaluó la influencia de la prueba en las decisiones clínicas finales. RESULTADOS: Hallazgos: 9 gammagrafías hepatobiliares (14%) fueron normales, 36 fueron negativas y 21 fueron positivas para complicaciones biliares. Del total de las 58 gammagrafías hepatobiliares, 50 (86%) tuvieron repercusión en la conducta clínica de observación o intervención. En todos los pacientes con hallazgos de complicaciones biliares (21/21; 100%) hubo una repercusión clínica, ya que a 18/21 se les realizaron estudios o tratamientos invasivos y 3/21 pacientes continuaron en manejo médico por hallazgos de complicaciones biliares no quirúrgicas. En 14/18 pacientes a los que se realizó estudios o procedimientos se encontró correlación con el estudio gammagráfico. En 24/36 (66%) pacientes con una gammagrafía hepatobiliar negativa se encontró impacto en la conducta clínica. CONCLUSIÓN: La gammagrafía hepatobiliar es una forma simple, no invasiva, confiable, vigente y disponible para el estudio de forma temprana de las complicaciones biliares en pacientes con trasplante hepático. Se debe tener en cuenta la disfunción hepatocelular importante como causa frecuente de obtener estudios falsos negativos

OBJECTIVE: To show the experience of the use of hepatobiliary scintigraphy in patients with suspected complications after liver transplantation in a high complexity centre. MATERIAL AND METHOD: Retrospective, observational and descriptive study. All consecutive adult patients with liver transplantation between January 2013 and February 2018 were included, with one or more hepatobiliary scintigraphy during the early or late postoperative period. A total of 58 studies were analyzed in 38 patients (22 men and 16 women). Mean age: 48 years. In 34/38: cadaverous donor (89%), and in 4 (11%): a living donor. Demographic data and relevant information regarding the transplant were obtained, and the result was related to the surgical findings to determine the correlation between them. The influence of the test on the final clinical decisions was evaluated. RESULTS: Findings: 9 scans (14%) were normal, 36 studies were negative, and 21 were positive for biliary complications. Of the total of 58 studies, 50 (86%) had impact on the clinical behaviour of observation or intervention. All the patients with findings of biliary complications (21/21; 100%) had clinical repercussion since 18/21 patients were taken to invasive studies or treatments, and 3/21 patients continued in medical management for findings of non-surgical biliary complications. In 14/18 patients taken to studies or procedures, correlation was found with the scintigraphic study. In 24/36 (66%) of patients with negative scintigraphy, an impact on clinical behaviour was found. CONCLUSION: Hepatobiliary scintigraphy is a simple, non-invasive, reliable, current and available form for the early study of biliary complications in patients with liver transplantation. Important hepatocellular dysfunction should be taken into account as a frequent cause of false negative studies

Hepatobiliary scintigraphy in the study of complications in adult patients after liver transplant. Description of the experience. / Gammagrafía hepatobiliar en el estudio de las complicaciones del trasplante hepático en adultos. Descripción de la experiencia.

OBJECTIVE: To show the experience of the use of hepatobiliary scintigraphy in patients with suspected complications after liver transplantation in a high complexity centre. MATERIAL AND METHOD: Retrospective, observational and descriptive study. All consecutive adult patients with liver transplantation between January 2013 and February 2018 were included, with one or more hepatobiliary scintigraphy during the early or late postoperative period. A total of 58 studies were analyzed in 38 patients (22 men and 16 women). Mean age: 48 years. In 34/38: cadaverous donor (89%), and in 4 (11%): a living donor. Demographic data and relevant information regarding the transplant were obtained, and the result was related to the surgical findings to determine the correlation between them. The influence of the test on the final clinical decisions was evaluated. RESULTS: Findings: 9 scans (14%) were normal, 36 studies were negative, and 21 were positive for biliary complications. Of the total of 58 studies, 50 (86%) had impact on the clinical behaviour of observation or intervention. All the patients with findings of biliary complications (21/21; 100%) had clinical repercussion since 18/21 patients were taken to invasive studies or treatments, and 3/21 patients continued in medical management for findings of non-surgical biliary complications. In 14/18 patients taken to studies or procedures, correlation was found with the scintigraphic study. In 24/36 (66%) of patients with negative scintigraphy, an impact on clinical behaviour was found. CONCLUSION: Hepatobiliary scintigraphy is a simple, non-invasive, reliable, current and available form for the early study of biliary complications in patients with liver transplantation. Important hepatocellular dysfunction should be taken into account as a frequent cause of false negative studies.

Alagille syndrome: an uncommon cause of intrahepatic cholestasis in adults

Alagille syndrome (ALGS) is an autosomal-dominant multisystem disorder caused by mutations in Jagged 1 (JAG1) or NOTCH2. The penetrance is low but highly variable. It is almost exclusively diagnosed in children with cholestasis and, more rarely, in their adult relatives. Here, we report the case of a patient diagnosed with ALGS in adulthood. The patient was a 28-year-old male who presented with characteristic facial features, an eye abnormality, chronic cholestasis with bile duct paucity on liver biopsy, atrial defects and stenosis of the left internal carotid artery. A novel frameshift mutation, c.2087_2088insAAAAATGG (p. W697Kfs*49), in JAG1 was identified. To our knowledge, this is the first case of ALGS diagnosed in adulthood in China. ALGS should be considered as a differential diagnosis for intrahepatic cholestasis in adult patients with a wide variety of clinical manifestations, including cardiac disease, skeletal abnormalities, ocular abnormalities and characteristic facial features

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Practical Management of Indeterminate Biliary Strictures.

Indeterminate biliary strictures pose a diagnostic and therapeutic challenge. Although underlying malignancy is a primary concern, biliary strictures may result from benign processes. An accurate diagnosis is paramount to define the treatment strategy and minimize morbidity. The limitations of traditional endoscopic retrograde cholangiopancreatography-based tissue acquisition with cytology brushings are well-documented. Endoscopic retrograde cholangiopancreatography is generally unable to determine a stricture's etiology. Complementary advanced endoscopic imaging and multimodal tissue acquisition have evolved. Careful consideration of the clinical presentation, location of the stricture, and interpretation of imaging constitute the most optimal approach for diagnosis and management.

Liver stiffness measurement by acoustic radiation forced impulse and transient elastography in patients with intrahepatic cholestasis.

BACKGROUND: Transient elastography (TE) and acoustic radiation force impulse (ARFI) imaging enable a noninvasive assessment of liver stiffness measurement (LSM) and liver fibrosis/cirrhosis staging. However, their use in cholestatic diseases is still scarce. AIM: The aim of this study was to evaluate the performance of TE and ARFI for the initial assessment of hepatic fibrosis in intrahepatic cholestatic (IHC) diseases and assess LSM changes after 3 months of specific therapy. PATIENTS AND METHODS: This prospective study was carried out on 50 IHC patients. Assessment at baseline and after 3 months of LSM by TE and ARFI was performed. RESULTS: Overall, 60% of the patients were women (36.5±9.2 years). IHC etiologies were 23 (46%) autoimmune hepatitis, eight (16%) primary sclerosing cholangitis, eight (16%) drug induced, and five (10%) primary biliary cirrhosis. TE could diagnose ≥F2, ≥F3, and F4 stages at cutoffs of at least 6.7, 9.4, and 14.0 kPa, sensitivity/specificity were 100/50% for ≥F2, 88.2/83% for ≥F3, and 90/100% for F4. Moreover, the sensitivity and specificity of ARFI were 93/50% for ≥F2 (cutoff: 1.53 m/s); 71/67% for ≥F3 (cutoff 1.77 m/s); and 90/100% for F4 (cutoff: 2.43 m/s).Follow-up showed a significant decrease in TE and ARFI values by 27 and 22.3% (P<0.001 and <0.001, respectively) and, accordingly, fibrosis stages decreased significantly by both TE and ARFI (P=0.002 and <0.001, respectively). CONCLUSION: TE and ARFI represent noninvasive methods with adequate diagnostic performance for the assessment of fibrosis, and monitoring disease progression and treatment response in intrahepatic cholestasis.

Long-term balloon indwelling technique for the treatment of single benign biliary stricture.

We aimed to evaluate the feasibility and safety of long-term balloon indwelling technique for the treatment of single benign biliary stricture. Five patients with single benign biliary stricture were included from December 2014 to November 2016. The patients were three men and two women with a mean age of 50 years (range, 30-65 years). A balloon catheter was inserted into the drainage catheter and emerged through the side hole of the catheter so that the balloon and drainage catheters could be placed together at the stricture site. Follow-up fluoroscopic examination was performed at least once every 2 weeks to evaluate the adequacy of expansion and location of the balloon. The balloon was reinflated at each session, and then removed after an approximately two-month indwelling period. The catheters used were 10-16 French and the diameter of indwelling balloons were 4-8 mm. The primary technical and clinical success rates were 100%. Maintenance of the balloon location was achieved in 25 of 26 follow-up fluoroscopic examinations (mean, 5.2 times per patient) with a rate of 96.1%. The mean follow-up period after successful removal of the balloon was 542.2 days (range, 93-1042 days), and there were no recurrences in the five cases. The long-term balloon indwelling technique is a good way to induce maximal dilatation at the stricture site without large diameter skin and subcutaneous tract dilatation and can be successfully used for single benign biliary stricture.

Biliary duct stenosis after image-guided high-dose-rate interstitial brachytherapy of central and hilar liver tumors : A systematic analysis of 102 cases.

OBJECTIVE: Image-guided high-dose-rate interstitial brachytherapy (iBT) with iridium-192 is an effective treatment option for patients with liver malignancies. Little is known about long-term radiation effects on the bile duct system when central hepatic structures are exposed to iBT. This retrospective analysis investigates the occurrence of posthepatic cholestasis (PHC) and associated complications in patients undergoing iBT. MATERIALS AND METHODS: We identified patients who underwent iBT of hepatic malignancies and had point doses of ≥1 Gy to central bile duct structures. Patients with known bile duct-related diseases or prior bile duct manipulation were excluded. RESULTS: 102 patients were retrospectively included. Twenty-two patients (22%) developed morphologic PHC after a median of 17 (3-54) months; 18 of them were treated using percutaneous transhepatic cholangiopancreatography drainage or endoscopic retrograde cholangiopancreatography. The median point dose was 24.8 (4.4-80) Gy in patients with PHC versus 14.2 (1.8-61.7) Gy in those without PHC (p = 0.028). A dose of 20.8 Gy (biological effective dose, BED3/10 = 165/64.1 Gy) was identified to be the optimal cutoff dose (p = 0.028; 59% sensitivity, 24% specificity). Abscess/cholangitis was more common in patients with PHC compared to those without (4 of 22 vs. 2 of 80; p = 0.029). Median survival did not differ between patients with and without PHC (43 vs. 36 months; p = 0.571). CONCLUSION: iBT of liver malignancies located near the hilum can cause PHC when the central bile ducts are exposed to high point doses. Given the long latency and absence of impact of iBT-induced PHC on median survival, the rate of cholestasis and complications seen in our patients appears to be acceptable.