At least 90% of stones are extracted after conventional endoscopic retrograde cholangiopancreatography. However, some cases are still difficult to manage completely. We describe some methods of removing difficult common bile duct stones through a single-operator cholangioscopy using SpyGlass system, direct peroral cholangioscopy, and temporary biliary stenting.

Approximately 3-15% of patients who have undergone removal of bile duct stones with endoscopic sphincterotomy have recurrence of stones which often presents as acute cholangitis. Despite better understanding on the factors and mechanisms underlying the recurrence of bile duct stones achieved during the past few decades, endoscopic removal still remains the mainstay of management for recurrent bile duct stones. Recently investigated and suggested management of recurrent bile duct stones are highlighted in this review.
Cholangiopancreatography, Endoscopic Retrograde ; Cholangitis/pathology ; Gallstones/surgery/*therapy ; Humans ; Recurrence ; Risk Factors ; Sphincterotomy, Endoscopic ; Ursodeoxycholic Acid/administration & dosage

The most effective and the standard treatment for bile duct stones (BDSs) is endoscopic retrograde cholangiopancreatography (ERCP). However, in 10% to 15% of patients with BDSs, the stones cannot be removed by conventional ERCP, which involves endoscopic sphincterotomy followed by balloon or basket extraction. Additional techniques or devices are often necessary to remove these difficult bileduct stones, including endoscopic papillary large balloon dilatation to make a larger papillary opening and/or mechanical lithotripsy to fragment the stones. Advances in cholangioscopy have made possible electrohydraulic or laser lithotripsy under direct cholangioscopic visualization during ERCP. Cholangioscopy-guided lithotripsy could be another good option in the armamentarium of techniques for removing difficult BDSs. Here we review endoscopic techniques based on single-operator cholangioscopy for the management of difficult BDSs.

Gallbladder cancer is the most common cause of hilar biliary obstruction; however, it rarely causes combined biliary, duodenal, and colon triple obstruction. In this case, the quality of life for a patient with recurrent gallbladder cancer with combined duodenal, colonic, and biliary obstruction was improved by endoscopic and endosonographic palliation, despite its technical difficulty and complexity. Seven metal stents were implanted one by one using only endoscopic methods. Successful stent-in-stent placement and endoscopic ultrasound-guided stenting after failed ERCP improved the patient’s quality of life to the extent that there was no need for any external drainage.

The incidence of multiple meningiomas found prior to the introduction of CT was 1~2%, the incidence since the introduction of CT was 8.9%. The authors report a case of multiple meningiomas without evidence of von Recklinghausen's disease. The possible presence of more than 1 tumor in a patient with an intracranial meningiomas must always be kept in mind. The pathogenetic factors related to true multiple meningiomas in unknown. We report a patient with multiple meningiomas which was confirmed by operation.
Humans ; Incidence ; Meningioma ; Neurofibromatosis 1

Cryptococcosis of central nervous system in uncommon, but fatal if untreated. We experienced a case of cryptococcal ventriculitis with hydrocephalus. The symptom was an increased intracranial pressure without meningeal irritation sign. It was confirmed by pathology and cytology taken from fibrous material, which caused an obstruction of shunt catheter in the lateral ventricle. We report a case of cryptococcal ventriculitis in 6 years old male child.
Catheters ; Central Nervous System ; Child ; Cryptococcosis ; Humans ; Hydrocephalus ; Intracranial Pressure ; Lateral Ventricles ; Male ; Pathology

We previoulsy reported the successful performances of the BRW stereotactic biopsy and aspiration of supratentorial and brain stem lesions. The BRW system has disadvantage of less accessibility to the cerebellar lesions by suboccipital approach. To overcome this disadvantage, we have tried to treat four patients having a cerebellar lesions, a case of hemangioblastoma, two cerebellar hemorrhages and acoustic neuroma, by transtentorial BRW stereotactic approach. This approach has been used successfully under the local anesthesia with satisfactory postoperative neurological results. We present a detailed technique of this approach.
Anesthesia, Local ; Biopsy ; Brain Stem ; Hemangioblastoma ; Hemorrhage ; Humans ; Neuroma, Acoustic

Recently we experienced stereotaxic endoscopic biopsy and resection of intracranial tumors using the Brown-Robert-Wells system. Surgical exploration was undertaken under the local anesthesia:1 germinoma in pineal region, 1 arachnoid cyst in basal cistern. The method is described, and the its potential clinical applications is discussed.
Arachnoid ; Biopsy ; Endoscopy* ; Germinoma