Table 1.

Clinicopathologic features of mesenteric extraskeletal osteosarcoma

Case	Age (years)	Sex	Size (cm)	Histologic type	Surgery	Adjuvant chemotherapy	Metastasis or recur	Status	Follow-up (months)
1 [5]	56	F	NA	NA	Incomplete tumor excision	No	Liver metastasis	Died	Died during hospitalization
2 [6]	45	M	15	Osteoblastic	Tumor excision	Yes	No	NA	NA
3 [7]	61	M	20	Osteoblastic	Palliative tumor resection	Yes	Peritoneal seeding	Died	10
4 [8]	67	M	18.5	Telangiectatic	En bloc tumor excision, colon segmental resection and splenectomy	Yes	Peritoneal recurrence, liver and lung metastasis	Died	4
5 [9]	40	M	15	Telangiectatic	Palliative en-bloc resection of tumor and small bowel, hepatic meastatectomy	Yes	Liver metastasis, peritoneal recurrence	NA	14
6 [10]	56	M	NA	Osteoblastic	Tumor excision with ileal resection	No	NA	NA	NA
7 (case)	70	F	15.1	giant cell-rich	en bloc resection of tumor and small intestine	No	No	Died	2

NA: not available.