Journal
CRITICAL REVIEWS IN ONCOLOGY HEMATOLOGY
Volume 138, Issue -, Pages 148-155Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.critrevonc.2019.04.009
Keywords
Diffuse low-grade glioma; Surgery; Recurrence; Chemotherapy; Radiotherapy; Malignant transformation; Leptomeningeal dissemination
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Early and maximal safe surgical resection optionally followed by adjuvant treatment is currently recommended in diffuse low-grade glioma (DLGG). Although this management delays malignant transformation (MT), recurrence will most often occur. Because this relapse usually arises locally, reoperation can be considered, with possible further chemotherapy/radiotherapy. However, due to a prolonged overall survival, a large spectrum of unusual recurrence patterns begins to emerge during long-term follow-up, beyond the classical slow and local tumor re-growth. We review various atypical patterns of DLGG relapse, we discuss their pathophysiological mechanisms and how to adapt the treatment(s). Those patterns include very diffuse, ipsi- or bilateral gliomatosis-like progression, multicentric recurrence with emergence of remote low-grade or high-grade glioma, leptomeningeal dissemination, acute (early or delayed) local MT or bulky relapse into the operating cavity. This landscape of recurrence patterns may allow physicians to elaborate new tailored therapeutic strategies and scientists to develop original hypotheses for basic research.
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