%0 Journal Article %T Role of the tumor microenvironment in pancreatic cancer %A Robert M. Hoffman %A Ryusei Matsuyama %A Takashi Murakami %A Yuki Homma %A Yukihiko Hiroshima %J Archive of "Annals of Gastroenterological Surgery". %D 2019 %R 10.1002/ags3.12225 %X Pancreatic cancer remains a highly recalcitrant disease despite the development of systemic chemotherapies. New treatment options are thus urgently required. Dense stromal formation, so©\called ˇ°desmoplastic stroma,ˇ± plays controversial roles in terms of pancreatic cancer growth, invasion, and metastasis. Cells such as cancer©\associated fibroblasts, endothelial cells, and immune cells comprise the tumor microenvironment of pancreatic cancer. Pancreatic cancer is considered an immune©\quiescent disease, but activation of immunological response in pancreatic cancer may contribute to favorable outcomes. Herein, we review the role of the tumor microenvironment in pancreatic cancer, with a focus on immunological aspects %K immune cell %K immunomodulation %K pancreatic cancer %K tumor©\infiltrating lymphocyte %K tumor microenvironment %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6422798/