Primary tumours of the duodenum.
D000230:Adenocarcinoma; D000328:Adult; D003537:Cystadenoma; D004379:Duodenal Neoplasms; D005260:Female; D006801:Humans; D007889:Leiomyoma; D007890:Leiomyosarcoma; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis