|Year : 2021 | Volume
| Issue : 3 | Page : 195-197
A rare case of caroli's syndrome
Satish Kumar Prasad1, Sameer Kumar Mehta1, Ankit Poddar2
1 Bihar Council of Medical Registration, Patna, Bihar, India
2 Department Of Medicine, Tata Main Hospital, Jamshedpur, Karnataka Medical Council, Bengaluru, Karnataka, India
|Date of Submission||28-Mar-2020|
|Date of Decision||02-Dec-2020|
|Date of Acceptance||02-Jun-2021|
|Date of Web Publication||19-Jul-2021|
Sameer Kumar Mehta
H. No. 170, First Floor, New Sitaramdera, Agrico, Jamshedpur - 831 009, Jharkhand
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Caroli's syndrome is a rare autosomal recessive congenital disorder of the biliary tree characterized by intrahepatic bile duct dilation and hepatic fibrosis. Very few cases have been encountered in routine day-to-day practice. The patients usually present with features of cholangitis such as pain abdomen and jaundice. They may also present with features of chronic liver disease and portal hypertension. Very rarely, they may develop cholangiocarcinoma and present with jaundice, weight loss, and abdominal mass or ascites. Here, we report one such case of a young female who presented to us with features of cholangitis with sepsis and encephalopathy, which was finally diagnosed as Caroli's syndrome. The aim of presenting this case is to learn that even patients with common symptoms of pain abdomen and jaundice may be harboring some rare congenital disease like Caroli's syndrome, as in our case.
Keywords: Caroli's disease, Caroli's syndrome, cholangitis, chronic liver disease, intrahepatic bile duct dilatation
|How to cite this article:|
Prasad SK, Mehta SK, Poddar A. A rare case of caroli's syndrome. Int J App Basic Med Res 2021;11:195-7
| Introduction|| |
Caroli's syndrome is a rare congenital disorder characterized by dilatation of intrahepatic bile ducts and hepatic fibrosis. Caroli's disease is a condition where there is only intrahepatic bile duct dilation without any fibrosis. The incidence is about 1 in 1,000,000 live births, with only about 200 cases reported in the literature. Caroli's disease usually presents with features of recurrent cholangitis with gallstones whereas Caroli's syndrome has features of chronic liver disease in addition to those of Caroli's disease. Caroli's syndrome is usually autosomal recessive in inheritance. Our patient had also presented with features of cholangitis and sepsis with encephalopathy and ascites, i.e., features of chronic liver disease. The aim of reporting the present case is that it is a rare cause of chronic liver disease and may be easily mistaken for cirrhosis of the liver.
| Case Report|| |
An 18-year-old female presented to our emergency department with complaints of abdominal distention and jaundice for 6 months, fever with chills for 7 days, and altered sensorium for 1 day. The abdominal distention and jaundice were gradual in onset and were progressively increasing since it had started 6 months ago. There was no history of hematemesis or melena. Fever was high grade, continuous, and was not associated with rigors or chills. The patient became drowsy 1 day before admission. There was a history of jaundice in childhood when the patient was 4 years old, which had remitted on its own. There was no history of ethanol abuse. The patient had a history of secondary amenorrhea for the last 2 years. Before that, she had a history of irregular menses. On physical examination, the patient had a Glasgow Coma Scale of 9/15 (E3V2M4), pulse was 100/min, and regular and blood pressure was 110/70 mmHg. Pallor and icterus were present. Chest and cardiovascular system were within normal limits. Abdominal examination revealed hepatosplenomegaly with ascites. Reports of investigations done were as follows: hemoglobin – 6.2 g/dl, total leukocyte counts − 8000/c mm, and bilirubin – 6.1 mg/dl (direct – 2.9 and indirect − 3.2). Alkaline phosphatase was raised (235 IU/ml); aspartate transaminase and alanine transaminase were normal. Malaria card test was negative. Hepatitis B surface antigen, anti-hepatitis C virus, and HIV I and II were negative. Serum ceruloplasmin and urinary copper levels were normal; Kayser–Fleischer ring was absent. With the above findings, a provisional diagnosis of chronic liver parenchymal disease with portal hypertension with sepsis and hepatic encephalopathy was made. Ultrasound of the abdomen showed multiple heterogeneous lesions in both lobes of the liver [Figure 1], some hyperechoic and well defined, some cystic, and others ill defined. These features were not suggestive of cirrhosis and so a differential diagnosis of peliosis hepatis or liver metastasis was considered. Magnetic resonance imaging (MRI) abdomen was done, MRI abdomen revealed hypertrophy of left lateral segment of the liver with mild enlargement of the right lobe of liver. Both lobes showed hyper-attenuating nodules which were suggestive of regenerative nodules. Multiple saccular and cystic lesions of varying sizes were seen, predominantly located peripherally, and were continuous with the biliary radicles [Figure 2]. The patient was treated with antibiotics and ursodeoxycholic acid and other supportive therapies. Ascites were present. Liver biopsy was done which showed hepatic fibrosis. MRI and liver biopsy findings confirmed the diagnosis of Caroli's disease with congenital hepatic fibrosis (Caroli's syndrome) with chronic liver disease and portal hypertension. The patient was treated with antibiotics and ursodeoxycholic acid and other supportive therapies. She improved with treatment, and the family was given the option for orthotopic liver transplantation, but the family members were unable to afford it. She was discharged in stable, but she was lost to follow-up after that.
|Figure 1: USG Abdomen - Showing multiple heterogenous lesions in both the lobes of liver|
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|Figure 2: MRI ABDOMEN - multiple saccular and cystic lesions of varying sizes seen predominantly located peripherally and were continuous with the biliary radicles|
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| Discussion|| |
Caroli's disease and Caroli's syndrome are rare congenital disorders of the intrahepatic biliary tree, characterized by multiple segmental, saccular, or cystic dilatations of the intrahepatic bile ducts. Caroli's syndrome includes features of Caroli's disease along with congenital hepatic fibrosis. Caroli's syndrome is autosomal recessive in transmission, but Caroli's disease is sporadic. Caroli's syndrome is commonly associated with autosomal recessive polycystic kidney disease (ARPKD)., Mutations in polycystic kidney and hepatic disease 1 on chromosome 6p21, which is the gene linked to ARPKD, have been identified in patients with Caroli's syndrome. In patients with ARPKD, CD can be found in 30% of cases. The incidence of Caroli's disease is approximately 1 in 1,000,000 population with a female preponderance. Caroli's syndrome is more common than Caroli's disease. The clinical features of Caroli's disease are usually characterized by recurrent episodes of cholangitis, cholelithiasis, biliary abscess, and septicemia. There may be features of chronic liver failure and portal hypertension due to hepatic fibrosis. There is an increased risk of cholangiocarcinoma (100 times that of the normal population). The laboratory findings may show leukocytosis and raised transaminase levels in cholangitis (as in our case). Dilatation of intrahepatic ducts may be evident in ultrasound (USG), computed tomography (CT), or MRI abdomen, and evidence of portal hypertension may be seen by the Doppler study. The demonstration of the communication between saccule and bile duct is important for diagnosing Caroli's disease and differentiang it from polycystic liver disease where the saccule does not communicate with the bile duct. The CT or MRI shows the “central dot sign”-enhancing dots (representing portal radicles) [Figure 3] within the intrahepatic ducts. Liver biopsy may show hepatic fibrosis. Carbohydrate antigen 19-9 and carcinoembryonic antigen are done for screening of cholangiocarcinoma. The treatment consists of antibiotics for cholangitis, ursodeoxycholic acid to decrease the incidence of cholelithiasis, and endoscopic retrograde cholangiopancreatography or percutaneous transhepatic cholangiography for removal of stones. Liver transplantation is the only cure in case of refractory or chronic cholangitis, liver failure, or malignancy. Genetic counseling is important as the transmission is autosomal recessive. Complications include recurrent cholangitis with sepsis, choledocholithiasis, liver abscess, liver failure with portal hypertension, and cholangiocarcinoma.
|Figure 3: MRI abdomen-shows multiple hypoechoic lesions scattered in both lobes of liver. (A)Few lesions show a hyperechoic focus within it -which represents a vessel. These findings are s/o Caroli disease.|
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| Conclusion|| |
Caroli's syndrome is a rare congenital disorder that comprises Caroli's disease (intrahepatic bile duct ectasia) and congenital hepatic fibrosis. Although it is a very rare cause of chronic liver disease (1 in 100,000), it should be suspected, particularly if the patient is young and has history and clinical features suggestive of recurrent cholangitis and other common causes of chronic liver disease and portal hypertension are excluded.As very few such cases have been reported in literature, we were prompted to publish this case. The importance of early diagnosis lies in the fact that the risk of cholangiocarcinoma is about 100 times greater in patients of Caroli's syndrome than in the general population and it can be picked up early if regular follow-up is done.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3]