Laparoscopic Resection of Appendiceal Schwannoma

Table 2

Characteristic US or EUS findings of mesenchymal tumor and NET G1.

	Layer origin	Margins	Feature with US
Schwannoma	4th layer	Well-defined	Hypoechoic	Homogeneous
GIST	4th layer	Well-defined	Hypoechoic	Homo-heterogeneous
Leiomyoma	4th layer	Well-defined	Hypoechoic	Homogeneous
NET G1	2nd~3rd layer	Well-defined	Hypoechoic	Homogeneous