Fig. 5From: The clinicopathological significance of angiogenesis in hindgut neuroendocrine tumors obtained via an endoscopic procedureDifferences in lymphatic microvessel density in tumors with and without lymphatic invasion. Legend: The lymphatic microvessel density values of tumors with lymphatic invasion were significantly higher than for tumors without lymphatic invasion (*, p < 0.001, Mann–Whitney U test; values are expressed as the mean ± standard deviation)Back to article page