Research Article
Clinical Epidemiology of Low-Grade and Dedifferentiated Osteosarcoma in Norway during 1975 and 2009
Table 2
Anatomical distribution of 54 patients with low-grade or dedifferentiated osteosarcoma (OS) combined. Separated between parosteal OS (POS), low-grade central OS (LGCOS), and other subgroups.
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Four cases of secondary low-grade OS and one case of extraskeletal low-grade OS (in the breast). |