Synonyms: GI system tumour neoplasm of GI system neoplasm of the GI system tumor of the gastrointestinal system digestive tumor tumour of GI system digestive system tumour tumour of gastrointestinal system GI system tumor gastrointestinal system neoplasm gastrointestinal system tumor gastrointestinal tumour neoplasm of the digestive system tumor of gastrointestinal system gastrointestinal neoplasm tumour of digestive system tumor of the GI system digestive neoplasm neoplasm of digestive system tumor of the digestive system digestive system neoplasm (disease) digestive system tumor gastrointestinal system tumour GI neoplasm GI tumour tumor of digestive system tumour of the GI system GI system neoplasm digestive tumour tumour of the gastrointestinal system neoplasm of the gastrointestinal system tumour of the digestive system gastrointestinal tumor tumor of GI system neoplasm of gastrointestinal system GI tumor