That's an extremely difficult question to answer because each person and each cancer is distinctive and unique. The most aggressive grade is said to grow rapidly, but that still does not mean that it grows over night. In most cases it takes months for a lump to grow big enough to even be felt or seen - and it's not a far fetch to imagine some may take a year or more grow, but there are several factors that also help determine growth such as hormone status.
Have you been diagnosed with cancer or are you just curious about something you may have felt?
I'm sorry I couldn't be more specific for you. If you have further question please feel free to post more. We are all here to help.
Angi
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