"Rectal Cancer by Astler-Coller Stage"^^ . . "Obsolete_Concept"^^ . "Rectal Cancer by Astler-Coller Stage"^^ . "Rectal_Cancer_by_Astler-Coller_Stage"^^ . . "C7083"^^ . "Rectal Cancer by Astler-Coller StageHDNCI" . "Neoplastic Process"^^ . "C1514800"^^ . "Malignant"^^ . "Header_Concept"^^ .