Table 4.

Literature review

Author	No. of cases	Average age (yr range))	Recurrence cases (%)	Metastasis cases (%)	Death cases (%)	Follow-up (mo. (range))
Enzinger [1]	24	13 (5–25)	15 (63)	5 (21)	3 (12)	36 (12–240)
Costa and Weiss et al. [3]	108	17 (2–70)	11 (12)	4 (4)	1 (1)	63 (5–189)
Pettinato et al. [22]	20	13.4 (3–42)	5 (25)	1 (5)	1 (5)	NA
Fanburg et al. [19]	158	20 (2–71)	2 (2)	1 (1)	0	6 (12–276)
Hasegawa et al. [23]	4	22.7 (0.5–54)	1 (25)	0	0	11 (84–204)
Chen et al. [16]	8	48 (22–65)	1 (12.5)	0	0	21 (3–78)
Shi et al. [25]	21	26.9 (8–83)	2 (9.5)	0	0	48 (4–148)
Wilk et al. [26]	9	24 (3–67)	0	NA	NA	75 (30–132)
Our series	7	26.4 (8–50)	2 (29)	2 (29)	1 (14.3)	35.1 (5–61)

NA not applicable