[Comment] Under-representation of peritoneal metastases in published clinical trials of metastatic colorectal cancer

The present landscape of clinical trials for metastatic colorectal cancer is dominated by visceral metastases, as was highlighted at the recent American Society of Clinical Oncology Gastrointestinal Cancers conference held in San Francisco, CA, USA, in 2017. Peritoneal metastases are difficult to image by cross-sectional imaging and this leads to a disproportionate under-representation of this site of metastases in clinical trials.

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