Dr. Robert John Greiner M.D.

Leukemia is a malignancy, or cancer, of the blood and bone marrow that primarily affects the white blood cells — the blood cells responsible for fighting off infections and other foreign organisms that enter the bloodstream. With leukemia, the bone marrow produces a higher level of immature white...

Being diagnosed with Parkinson’s can be a huge life-changer for anyone. Unfortunately, it is a progressive disease, so even with the help of surgery and medication, some parts of it will remain as part of your life. It can be possible, especially during the early stages of the disease, to live...

Lymphoma is a blood cancer that affects both children and adults.Lymphoma begins its growth in the lymphatic white blood cells of the lymph system. This system is a major warrior in fighting off infections and diseases. It is part of the body’s immunity team.The lymph system loops throughout the...

Leukemia in its early stages may present no signs or symptoms, as these only appear when the leukemia cells have taken over a large number of normal blood cells. A person with leukemia is very lucky indeed if early-stage detection occurs incidentally, through a routine blood test or one done for...

IntroductionA decrease in the number of white blood cells (WBCs) is referred to as leukopenia. There are several causes for leukopenia. It may be due to certain drugs, cancer, radiation and chemotherapy for cancer, stem cell transplant, surgery, steroids, or autoimmune disorders. The immune system...

PurpuraPurpura refers to purple-colored spots that are usually seen on the skin, including mucous membranes and other organs. It is also called skin hemorrhages or blood spots.Purpura is usually recognized when there is pooling of blood under the skin due to ruptured small blood vessels. The size of...