Table 1. General clinical information for the six patients.

Case	Age/sex	Location	Treatment	Postoperative recurrence and metastasis	Follow-up
Case 1 (10232606)	23/male	Periorbital area	Surgical resection	Six months post-operation recurrence of right side of the Ethmoidal sinus.	4 years and 7 months
Case 2 (12199664)	17/male	Superior abdomen	Surgical resection, chemotherapy	Two months post-operation recurrence in the pelvis and abdominal cavity.	3 years and 7 months
Case 3 (13142551)	45/female	Superior abdomen	Surgical resection	Seven months post-operation recurrence in the pelvis cavity.	1 year and 10 months
Case 4 (10522313)	40/female	Left supraclavicular	Irradiation	No	4 years and 2 months
Case 5 (14338103)	22/male	Frontal temporal lobe	Surgical resection, chemotherapy and irradiation therapy	No	6 months
Case 6 (14434966)	34/female	Pelvis	Surgical resection, chemotherapy and irradiation therapy	No	2 years and 7 months