Osteogenic Sarcomas (OS) are tumors we frequently see in our referral practices. As general practioners you often recognize them first.The reason I chose this subject is we now have research data that better defines this incurable tumor. Because it is a common tumor in the dog and in man the dog has been used as a research model for the disease. As we all recognize certain breeds seem very predisposed to OS, Golden Retrievers, Greyhounds, and Rottweilers.13 With the genome of the dog sequenced more knowledge about why there appears to be a breed predisposition may be discovered in the near future. With better evidence based medicine we can now refute many of the past assumptions and prognostications about OS.

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