Myelofibrosis (MF). 1  Is a rare bone marrow cancer. 2  Is a type of chronic leukemia and can occur on its own (primary myelofibrosis) or as a result of another bone marrow disorder. It is one of a related group of blood cancers known as âmyeloproliferative neoplasms (MPNs)â in which bone marrow cells that produce the blood cells develop and function abnormally. 2  The resulting fibrous scar tissue formation leads to severe anemia, weakness, fatigue and an enlarged spleen and liver.
A doughnut or donut (both: /ËdoÊnÉt/ or /ËdoÊnÊt/; see spelling differences) is a type of fried dough confectionery or dessert food.
Step Two. Donut cushions (doughnut cushions) are circular cushions that have a hole in the center, like a donut. The idea is for you to sit with the lower part of each buttock cheek supported by the ring of the doughnut, while the tailbone is centered over the middle of the hole.