RREB1::MRTFB fusion-positive extra-glossal mesenchymal neoplasms: A series of five cases expanding their anatomic distribution and highlighting significant morphological and phenotypic diversity.
Agaimy A, Din NU, Dermawan JK, Haller F, Melzer K, Denz A, Baumhoer D, Stoehr R, Grützmann R, Antonescu CR.