摘要
Cholangioscopy remains another modality in the investigation of biliary strictures. At cholangioscopy, the"tumour vessel" sign is considered a specific sign formalignancy. Through its ability to not only visualisemucosa, but to take targeted biopsies, it has a greater accuracy, sensitivity and specificity for malignant strictures than endoscopic retrograde cholangiopancreatography guided cytopathological acquisition. Cholangioscopy however, is time consuming and costly, requires greater technical expertise, and should be reserved for the investigation of undifferentiated strictures after standard investigations have failed.
Cholangioscopy remains another modality in the investigation of biliary strictures. At cholangioscopy, the＂tumour vessel＂ sign is considered a specific sign formalignancy. Through its ability to not only visualisemucosa, but to take targeted biopsies, it has a greater accuracy, sensitivity and specificity for malignant strictures than endoscopic retrograde cholangiopancreatography guided cytopathological acquisition. Cholangioscopy however, is time consuming and costly, requires greater technical expertise, and should be reserved for the investigation of undifferentiated strictures after standard investigations have failed.
