organ system benign neoplasm +
gastrointestinal system disease +

appendix disease +
autoimmune disease of gastrointestinal tract +
cardiovascular organ benign neoplasm +
diarrhea +
endocrine organ benign neoplasm +
esophageal atresia/tracheoesophageal fistula
esophageal disease +
gallbladder disease +
gastroenteritis +
gastroesophageal reflux disease
gastrointestinal anthrax +
gastrointestinal system cancer +
gastrointestinal tularemia
hepatobiliary disease +
immune system organ benign neoplasm +
integumentary system benign neoplasm +
intestinal disease +
juvenile polyposis syndrome
mouth disease +
mucositis
musculoskeletal system benign neoplasm +
nervous system benign neoplasm +
peptic ulcer disease +
perinatal necrotizing enterocolitis
peritonitis +
reproductive organ benign neoplasm +
respiratory system benign neoplasm +
stomach disease +
thoracic benign neoplasm +
urinary system benign neoplasm +

appendix leiomyoma
esophageal lipoma
esophagus leiomyoma
esophagus squamous cell papilloma
gastric hemangioma
gastric leiomyoma
gastrointestinal adenoma
gastrointestinal neuroendocrine benign tumor +
hepatobiliary benign neoplasm +
intestinal benign neoplasm +
pancreatic cystadenoma +
pancreatic intraductal papillary-mucinous adenoma
pleomorphic adenoma
squamous papillomatosis