Fig. 2From: Natural history and outcome in chinese patients with gastroenteropancreatic neuroendocrine tumours: - a 17-year retrospective analysisOverall disease progression. a By tumour grade (WHO classification) - green line indicates WHO grade 2 or grade 3 tumours and blue line indicates grade 1 tumours (p < 0.001). b By tumour size - green line indicates tumours ≥ 2 cm and blue line indicates tumours <2 cm (p = 0.031). c By metastasis on presentation - green line indicates metastasis on presentation and blue line indicates no metastasis on presentation (p < 0.001)Back to article page