Biliary intraductal metastasis from advanced XXXX : radiologic and histologic characteristics, and clinical outcomes of percutaneous metallic stent placement.

@entity1 @entity3883 @entity5409 @entity2269 @entity356
OBJECTIVES: To investigate the radiologic and histological characteristics of biliary intraductal metastasis of advanced @entity356 and the clinical outcomes of percutaneous, metallic stent placement. MATERIALS AND METHODS: We retrospectively assessed 24 @entity1 with @entity3883 related to biliary intraductal metastasis of @entity356 who underwent PTBD and subsequent metallic stent placement between 2003 and 2012. RESULTS: Intraductal metastases appeared as uniform, concentric, linear (n   =   17) or band-like (n   =   7), enhanced wall thickening on CT, and 20 @entity1 (83.3  %) had @entity5409 . On pathology specimens, malignant cells scattered in the submucosal layer caused a @entity2269 . The technical and clinical success rate of stent placement was achieved in all 24 @entity1 . The median survival time was 203  days. Stent occlusion was observed in four @entity1 with 49-278 days following stent placement. The median stent patency time was 156  days. CONCLUSIONS: The radiologic and histological characteristics of biliary intraductal metastasis of advanced @entity356 consist of uniform, linear or band-like, enhanced biliary wall thickening and malignant cells scattered in the submucosal layer, together with the @entity2269 without any disruption of the epithelial layer. Uncovered metallic stent placement was also a safe and effective method of palliative treatment in these @entity1 . KEY POINTS:     The CT findings of intraductal metastasis were linear/band-like, enhanced biliary wall thickening.     The histological finding was malignant cells scattered in the submucosal layer.     It showed a @entity2269 without any disruption of the epithelial layer.     Uncovered metallic stent placement was a safe and effective palliative treatment.
