Purpose To study the correlation between the right bare area of the liver (BAL) and the retroperitoneum, and the localization about organ origin of large mass in this region by CT.

Objective: To know the infection state of TTV and the relationship between other viral liver diseases in Hebei area.

The grade difference was analyzed by comparing preoperative liver CT grades of non-tumor area and clinical liver function grade, preoperative and postoperative biochemical index change curve.