XXXX without secondary signs on multiphasic multidetector CT: association with clinical and histopathologic features.

@entity1 @entity788 @entity5 @entity1735
PURPOSE: To determine the clinical, histopathologic and imaging features of @entity788 without secondary signs on dynamic CT. MATERIALS AND METHODS: Seventy @entity1 (mean age 70  years) with histologically proven @entity788 underwent preoperative contrast material-enhanced multiphasic multidetector CT before pancreatic resection. In each @entity1 , clinical data including @entity1735 antigen 19-9, frequency of @entity5 , and presence of secondary signs and histopathologic findings such as @entity5 location, @entity5 stage, and microscopic infiltrative growth grade were evaluated. RESULTS: Ten @entity5 (14  %) were without secondary signs, and 60 (86  %) were with secondary signs. @entity5 without and with secondary signs were located in the uncinate process in 5 (50  %) and 3 (5  %), head in 3 (30  %) and 29 (48  %), body in 2 (20  %) and 22 (37  %), and tail in 0 (0  %) and 6 (10  %), respectively (p   =   .001). The frequency of isoattenuating @entity788 without secondary signs was significantly higher than those with secondary signs (p   =   0.034). The @entity5 stage of @entity788 without secondary signs was earlier than that in @entity5 with secondary signs (p   =   0.041). CONCLUSIONS: @entity788 without secondary signs is characterized by the presence of uncinate and @entity5 and earlier @entity5 stage @entity5 with secondary signs. KEY POINTS:     Frequency of @entity788 without secondary signs on multiphasic CT is 14   %.     @entity788 without secondary signs are common in the uncinate process.     @entity788 without secondary signs are common in @entity5 .     @entity788 without secondary signs are characterized by @entity5 .
