Bilateral percutaneous biliary drainage in a patient with hilar biliary obstruction and multifocal hydatid liver disease

Non-surgical and non-chemical attempts to treat echinococcosis: do they work?

Cystic echinococcosis (CE) and alveolar echinococcosis (AE) are chronic, complex and neglected diseases. Their treatment depends on a number of factors related to the lesion, setting and patient. We performed a literature review of curative or palliative non-surgical, non-chemical interventions in CE and AE. In CE, some of these techniques, like radiofrequency thermal ablation (RFA), were shelved after initial attempts, while others, such as High-Intensity Focused Ultrasound, appear promising but are still in a pre-clinical phase. In AE, RFA has never been tested, however, radiotherapy or heavy-ion therapies have been attempted in experimental models. Still, application to humans is questionable. In CE, although prospective clinical studies are still lacking, therapeutic, non-surgical drainage techniques, such as PAIR (puncture, aspiration, injection, re-aspiration) and its derivatives, are now considered a useful option in selected cases. Finally, palliative, non-surgical drainage techniques such as US- or CT-guided percutaneous biliary drainage, centro-parasitic abscesses drainage, or vascular stenting were performed successfully. Recently, endoscopic retrograde cholangiopancreatography (ERCP)-associated techniques have become increasingly used to manage biliary fistulas in CE and biliary obstructions in AE. Development of pre-clinical animal models would allow testing for AE techniques developed for other indications, e.g. cancer. Prospective trials are required to determine the best use of PAIR, and associated procedures, and the indications and techniques of palliative drainage.

Biliary complications of large Echinococcus granulosus cysts: report of 2 cases and review of the literature

Hydatid cysts are often incidentally found and remain clinically silent. However complications can occur. We present 2 patients who developed biliary complications due to a large hydatid cyst. In the first patient compression on the intrahepatic bile ducts and cystic duct by the cyst, caused cholangitis and cholecystitis. Moreover the cyst had ruptured into the right intrahepatic bile ducts. A sphincterotomy was performed with extraction of hydatid sand. A pericystectomy was necessary because of infectious deterioration of the patient. Albendazole was continued for 8 weeks after surgery. The second case presented with jaundice and weight-loss since 1 month. A large hydatid cyst caused compression on the bile duct bifurcation with proximal bile duct dilatation. A cystectomy was performed 2 weeks after albendazole therapy initiation, which was continued for 8 weeks after surgery. Follow-up of both surgical interventions was unremarkable. Although Echinococcus granulosus in not prevalent in Belgium, we must be aware of this pathology in patients coming from high endemic regions.