Table I.

Clinical features of previously reported cases with PNET arising from the intestine and mesentery.

Authors (ref.)	Age (years)/gender	Location	Tumor size and/or weight	Positive immunomarker	Follow-up
1 Balasubramanian et al (4)	53/F	Small bowel mesentery	25×26×17.5 cm; 2.6 kg	MIC-2 and PGP9.5 strongly	NM
2 Sethi and Smith (5)	44/M	Small bowel	120 mm diameter	MIC-2 strongly and NSE weakly	Succumbed with recurrence, 13 mo
3 Bala et al (6)	57/F	Small bowel mesentery	12 cm diameter	Vimentin, NSE, O-13, c-Kit, FLI	NED, 8 mo
4 Horie and Kato (7)	40/M	Small bowel mesentery	11×8 cm	CD99, NSE, syn and vimentin.	Succumbed with recurrence, 5 mo
5 Tokudome et al (8)	24/F	Transverse colonic mesentery	12×10×7 cm, 590 g	NSE and Mic-2	NED, 20 mo
6 Maisonnette et al (9)	56/F	Mesocolon	12×14×12 cm	CD99 and FLI1	Succumbed to acute respiratory failure, 13 mo
7 Adair et al (10)	21/F	Duodenum	NM	CD99 and CK	10 mo DFS
8 Rodarte-Shade et al (11)	32/M	Small bowel	12×8 cm	CD99 and FLI1	6 mo DFS
9 Sarangarajan et al (12)	13/M	Jejunum	NM	CD99 and CK	12 mo DFS
10 Graham et al (13)	14/M	Small bowel and mesentery	6×3.5×3 cm	CD99 and CK	10 mo DFS
11 Vignali et al (14)	15/F	Ileum	12×9×8 cm	NM	NM
12 Kim et al (15)	63/M	Small bowel	NM	CD99 and CD117	NM
13 Shek et al (16)	9/F	Small bowel and mesentery	NM	CD99	18 mo DFS
14 Boehm et al (17)	18/M	Ileum	NM	NM	NM
15 Kie et al (18)	20/F	Duodenum	NM	CD99	18 mo DFS
16 Prasertvit and Stoikes (19)	28/F	Small intestine	NM	NM	NM
17 Turkyilmaz et al (20)	15/F	Mesocolon	10×10×12 cm	Vimentin and CD99	NM
18 Kim et al (21)	23/M	Mesentery of jejunum	12×8×7.5 cm	CD99, CD57 and NSE	NM

PNET, primitive neuroectodermal tumor; NM, not mentioned; DFS, disease-free survival; NED, no evidence of disease; Mo, months; ref, reference.