Duodenal Rare Neuroendocrine Tumor: Clinicopathological Characteristics of Patients with Gangliocytic Paraganglioma

Table 4

Comparison of rate of lymph node metastasis in patients with gangliocytic paraganglioma focusing on tumor size (30 mm).

	Tumor size is within 30 mm	Tumor size is larger than 30 mm
Total number of patients	156	29
Number of patients with lymph node metastasis	16	9
Number of patients without lymph node metastasis	140	20
Rate of lymph node metastasis	10.3% (16/156)	31.0% (9/29)
Statistical analysis	Significant difference was found
	( test, )

Significant difference was found between them ( test, ). This fact indicated that GP larger than 30 mm is significant risk factor of lymph node metastasis in gangliocytic paraganglioma.