BACKGROUND Gastrointestinal stromal tumors(GISTs)are the most common mesenchymal neoplasms of the gastrointestinal tract.Surgical resection and tyrosine kinase
BACKGROUND Polymorphisms of human leukocyte antigen(HLA)genes are suggested to increase the risk of gastric cancer(GC).AIM To investigate the HLA allele frequen
BACKGROUND The rare incidence of esophageal neuroendocrine carcinoma(NEC)and limited treatment experience result in insufficient clinical observations and unsui