Patients with advanced variants of Systemic Mastocytosis may develop destructive bone lesions when massive mast cell (MC) infiltrates are present. Finding of large osteolyses in indolent systemic mastocytosis, typically characterized by low MC burden, should prompt investigations for an alternative explanation.
Keywords: Non‐hodgkin lymphoma; osteolysis; primary bone lymphoma; systemic mastocytosis; tryptase.