TY - JOUR
T1 - Radiation therapy for patients with locally advanced pancreatic cancer
T2 - Evolving techniques and treatment strategies
AU - Abi Jaoude, Joseph
AU - Kouzy, Ramez
AU - Nguyen, Nicholas D.
AU - Lin, Daniel
AU - Noticewala, Sonal S.
AU - Ludmir, Ethan B.
AU - Taniguchi, Cullen M.
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2020/12
Y1 - 2020/12
N2 - Despite ongoing efforts, patients with locally advanced pancreatic cancer (LAPC) continue to have a dismal prognosis. Such tumors are unresectable, and optimal treatment with chemotherapy and/or radiation therapy is still not established. While chemotherapy is conventionally aimed at preventing metastatic spread of disease, radiation therapy acts locally, improving local control which can potentially improve overall survival and most importantly quality of life. Here, we aim to review the primary literature assessing the role of diverse radiation therapy strategies for patients with LAPC. Many radiation regimens can be considered, and no standard treatment has demonstrated a clear improvement in clinical outcomes. We advise that the modality of choice be dependent on the availability of equipment, the dose and fractionation of treatment, as well as the dose received by normal tissue. Moreover, a candid discussion with the patient concerning treatment goals is equally as essential. Three notable strategies for LAPC are intensity-modulated radiation therapy, volumetric modulated arc therapy, and proton. These radiation modalities tend to have improved dose distribution to the target volumes, while minimizing the radiation dose to surrounding normal tissues. Stereotactic body radiation therapy can also be considered in LAPC patients in cases where the tumor does not invade the duodenum or other neighboring structures. Because of the high doses delivered by stereotactic body radiation therapy, proper respiratory and tumor motion management should be implemented to reduce collateral radiation dosing. Despite improved clinical outcomes with modern radiation modalities, evolving techniques, and more accurate planning, future studies remain essential to elucidate the optimal role for radiation therapy among patients with LAPC.
AB - Despite ongoing efforts, patients with locally advanced pancreatic cancer (LAPC) continue to have a dismal prognosis. Such tumors are unresectable, and optimal treatment with chemotherapy and/or radiation therapy is still not established. While chemotherapy is conventionally aimed at preventing metastatic spread of disease, radiation therapy acts locally, improving local control which can potentially improve overall survival and most importantly quality of life. Here, we aim to review the primary literature assessing the role of diverse radiation therapy strategies for patients with LAPC. Many radiation regimens can be considered, and no standard treatment has demonstrated a clear improvement in clinical outcomes. We advise that the modality of choice be dependent on the availability of equipment, the dose and fractionation of treatment, as well as the dose received by normal tissue. Moreover, a candid discussion with the patient concerning treatment goals is equally as essential. Three notable strategies for LAPC are intensity-modulated radiation therapy, volumetric modulated arc therapy, and proton. These radiation modalities tend to have improved dose distribution to the target volumes, while minimizing the radiation dose to surrounding normal tissues. Stereotactic body radiation therapy can also be considered in LAPC patients in cases where the tumor does not invade the duodenum or other neighboring structures. Because of the high doses delivered by stereotactic body radiation therapy, proper respiratory and tumor motion management should be implemented to reduce collateral radiation dosing. Despite improved clinical outcomes with modern radiation modalities, evolving techniques, and more accurate planning, future studies remain essential to elucidate the optimal role for radiation therapy among patients with LAPC.
KW - Carbon ion therapy
KW - IMRT
KW - Locally advanced pancreatic cancer
KW - MR Linac
KW - Particle therapy
KW - Radiation therapy
KW - SBRT
KW - Unresectable pancreatic cancer
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U2 - 10.1016/j.currproblcancer.2020.100607
DO - 10.1016/j.currproblcancer.2020.100607
M3 - Review article
C2 - 32471736
AN - SCOPUS:85085334359
SN - 0147-0272
VL - 44
JO - Current Problems in Cancer
JF - Current Problems in Cancer
IS - 6
M1 - 100607
ER -