Table 1.

Clinicopathological profile of the patients with osteosarcoma with cytokeratin expression

No.	Age/Sex	Site	Symptoms	Size	Histology	Ep	CK	EMA	Pleo	Ch Ef	Surgery	Follow up
1	27 M	Humerus	Pain	8	Os	+	2+	–	2+	Poor	Wide	113 m, NED
2	43 M	Ilium	Pain	12	Os	+	2+	–	+	Poor	Wide	24 m, DOD
3	28 M	Humerus	Pain	4	Fi	–	2+	–	2+	Poor	Wide	38 m, AWD
4	66 F	Femur	Pain	11	Os	+	2+	–	2+		Wide	30 m, NED
5	18 M	Tibia	Pain	6	Fi	–	2+	–	2+	Poor	Wide	319 m, NED
6	13 F	Tibia	Pain	8	Chon	–	2+	–	+	Poor	Wide	53 m, AWD

Size, size (cm); Ep, epithelioid feature; CK, cytokeratin; EMA, epithelial membrane antigen; Pleo, pleomorphism; Ch Ef, chemotherapy effect; OS, osteoblastic; Fi, fibroblastic; Chon, chondroblastic; NED, no evidence of disease; DOD, dead of disease; AWD, alive with disease.