The clinical outcome of patients with locally advanced rectal cancer who undergo neoadjuvant chemoradiotherapy (CRT) is influenced by the tumour response to treatment, which is reflected by tumour regression grade… Click to show full abstract
The clinical outcome of patients with locally advanced rectal cancer who undergo neoadjuvant chemoradiotherapy (CRT) is influenced by the tumour response to treatment, which is reflected by tumour regression grade and post‐treatment (y) TNM stage. Little is known about the prognostic value of pretreatment histopathological features of the tumour that may be useful to discriminate potential non‐responders and to design tailored therapeutic strategies. In this study, we aimed to investigate the prognostic role of poorly differentiated clusters (PDCs) of neoplastic cells in pretreatment biopsies of patients with rectal cancer treated with neoadjuvant CRT.
               
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