Open Access 01-12-2017 | Research
Is neuroendocrine differentiation a prognostic factor in poorly differentiated colorectal cancer?
Published in: World Journal of Surgical Oncology | Issue 1/2017
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Background
To determine the prognostic relevance of neuroendocrine differentiation in poorly differentiated colorectal cancer.
Methods
The clinicopathological features and survival of 70 patients with poorly differentiated colorectal cancer were analyzed retrospectively. Chromogranin A and synaptophysin were used as neuroendocrine markers. Patients were followed-up for more than 3 years or until death.
Results
Of these 70 patients, 36 showed neuroendocrine differentiation. In univariate prognostic analysis, the patients with lymph node metastasis (P < 0.001), advanced TNM stage (P < 0.001), and neuroendocrine differentiation (P = 0.003) tended to have a poor prognosis. However, only lymph node metastasis was associated with a poor prognosis in multivariate analysis (P < 0.001). Patients with neuroendocrine differentiation were associated with lymph node metastasis (P = 0.006).
Conclusions
Neuroendocrine differentiation in poorly differentiated colorectal cancer was not a direct prognostic factor in these patients. Lymph node metastasis was a direct prognostic factor in these patients. Patients with neuroendocrine differentiation were associated with lymph node metastasis.