title: Fecalith vs lymphoid hyperplasia in acute appendicitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001064:Appendicitis / Q000175:diagnosis / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D005243:Feces; D006801:Humans; D006965:Hyperplasia / Q000175:diagnosis; D007223:Infant; D008221:Lymphoid Tissue; D008875:Middle Aged