Fig. 6From: Risk factors associated with the progression and metastases of hindgut neuroendocrine tumors: a retrospective studyScatter plots of the hindgut neuroendocrine tumor between the maximum tumor diameter and microvessel density. A significant positive correlation was found between microvessel density and the maximum tumor diameter (r = 0.735, P < 0.001, Spearman correlation coefficient)Back to article page