TKT and Increased total eosinophil count: These neoplasms include “chronic eosinophilic leukemia, not otherwise specified” (CEL NOS), which belongs to the myeloproliferative neoplasms (MPNs) category, and a recently introduced category named “myeloid/lymphoid neoplasms with eosinophilia and tyrosine kinase gene fusion” (MLN-TK) [11,24].