IT1N0M0IIT2N0M0III AT3N0M0III BT13N1M0IV AT4N01M0IV BAny TN2M0Any TAny NM1IT1N0M0IIT2abN0M0III AT3N0M0III BT13N1M0IV AT4N01M0IV BAny TN2M0Any TAny NM1I AT1N0M0I BT2N0M0II AT3N0M0II BT13N1M0IIIT4Any NM0IV Any TAny NM1I AT1N0M0I BT2N0M0II AT3N0M0II BT13N1M0IIIT4Any NM0IV Any TAny NM1良性梗阻良性梗阻恶性梗阻恶性梗阻病因病因炎症、结石、疤痕胆管癌、胰腺癌等梗阻部位梗阻部位低位梗阻或中位高位和中位梗阻扩张程度扩张程度轻度中度中度重度扩张形态扩张形态枯枝状或残根征软藤状扩张比例扩张比例肝外扩张比肝内明显肝内外程度一致阻塞程度阻塞程度多不完全多较完全狭窄形态狭窄形态杯口状充缺或逐渐变细的狭窄 不规则、偏心充缺或鸟嘴狭窄
