title: Tonsillectomy, appendectomy and malignant lymphomas.
mesh_terms: D000293:Adolescent; D000328:Adult; D001062:Appendectomy; D005260:Female; D006689:Hodgkin Disease / Q000453:epidemiology*; D006801:Humans; D008223:Lymphoma / Q000453:epidemiology*; D008297:Male; D012189:Retrospective Studies; D012306:Risk; D014068:Tonsillectomy