Primary Inflammatory Myofibroblastic Tumor of the Liver: A Clinicopathologic and Genetic Study Including a Subset with ETV6::NTRK3 Fusion.

This article describes the first example of primary pediatric hepatic IMTs with ETV6::NTRK3-fusion. Besides the common ALK-positive subgroup, the proportion of NTRK3-fusion is high. Recognizing the association between clinicopathologic and molecular alterations is critical to accurate diagnosis of hepatic IMTs.