title: Rectal carcinoma in patients in the second and third decades of life.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002277:Carcinoma / Q000453:epidemiology; D006801:Humans; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000453:epidemiology*