The factors used to determine tumor grade can vary between different types of cancer. Tumor grade is not the same as the stage of a cancer. Cancer stage refers to the size and/or extent (reach) of the original (primary) tumor and whether or not cancer cells have spread in the body. Cancer stage is based on factors such as the location of the primary tumor, tumor size, regional lymph node involvement (the spread of cancer to nearby lymph nodes), and the number of tumors present.
According to an international team of scientists reporting in the Proceedings of the National Academy of Sciences, an asteroid or comet that landed in what is now the Canadian province of Quebec might have led to a significant climate change event known as Younger Dryas.
Possible Cause: Your Age. You can have dry skin at any age, but youâre more likely to if youâre in your 50s or older. This is because the glands that make oil for your skin get smaller as you age and make less. Older adults are also more likely to have medical conditions like diabetes and kidney disease that can cause dry skin.