BrendaM,
Sometimes these diseases look a lot alike at initial diagnosis. This looks a lot like my first bone marrow biopsy report over 3 years ago. In the end, there are numerous factors that are used to separate out MDS from an MPN. From the information provided, it would be difficult to make the right diagnosis.
Here is some more information from cancer.gov that goes into a pretty detailed description of how to define an MPN
http://www.cancer.gov/cancertopics/p...essional/page4
Typically, if you have dysplasia in your blood cells, you are considered to have MDS instead of an MPN, or some form of an MDS/MPN overalap disorder. There is also a new category of MDS with fibrosis that is sometimes used.
Hope this helps a little.
Thanks.