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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... Synovitis, Pigmented Villonodular C04.557.450.565.465 Mastocytosis C04.557.450.565.465.124 Mast-Cell ... Mastocytoma, Skin C04.557.450.565.465.500 Mastocytosis, Cutaneous C04.557.450.565.465.500.500 ...
  2. Search Strategy Used to Create the PubMed Cancer Filter 
    https://www.nlm.nih.gov/bsd/pubmed_subsets/cancer_strategy.html
    ... tw] OR mastocytoma [tw] OR mastocytomas [tw] OR mastocytosis [tw] OR mcf-7 [tw] OR medulloblastoma [tw] ...