FIGURE 3.
Morphologic spectrum of NTRK3 rearranged high-grade sarcomas with a nonspecific immunophenotype. A-C, High-grade FS-like sarcoma with NTRK3 rearrangement and amplification presenting as a huge pelvic tumor in a 49-year-old female (case 7); A, cellular fascicular spindle cell sarcoma; B, tumor infiltrating colon; C, IHC expression of pan-TRK. FS, fibrosarcoma; IHC, immunohistochemistry [Color figure can be viewed at wileyonlinelibrary.com]