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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... Thyroid Carcinoma, Anaplastic C04.557.470.550 Neoplasms, Adnexal and Skin Appendage C04.557.470.550.105 Adenocarcinoma, Sebaceous C04.557.470.550.175 Adenoma, Sweat ...