Table 2.

Clinicopathologic data of 62 osteosarcoma patients examined by immunohistochemistry

VariablesNo. of patients%
All62100
Gender
    Male4166
    Female2134
Age
    <10711
    10–193760
    20–291219
    30–39610
Location
    Lower extremity5589
    Upper extremity711
Histogical subtype
    Osteoblastic3556
    Chondroblastic1016
    Fibroblastic35
    Telangiectatic35
    Not determined1118
Metastasis at diagnosis
    Absent5385
    Present915
Response to neoadjuvant chemotherapy
    Good2134
    Poor3556
    NA610
Development of pulmonary recurrence
    Yes2337
    No3963
ASS protein expression
    Positive2235
    Negative3963
    Not evaluable12

Abbreviation: NA, not available.