• Biopsy
  • An aetiological investigation was performed, and a bone marrow (BM) biopsy and aspirate showed a hypercellular marrow with hypereosinophilia without dysmorphia or abnormal elements, and the BM and inguinal node's immunophenotyping denied any presence of abnormal lymphoid cell population. (readbyqxmd.com)
  • disorder
  • Although PLCH has generally been considered an acquired benign disorder, recent evidence suggests that at least a subset of these patients have a clonal proliferative disorder of mutated cells including the BRAF V600E mutation. (oncologynurseadvisor.com)