The increase in white blood cells in<unk> . Diagnosis is usually based on repeated complete blood counts and a bone marrow examination following observations of the symptoms. Sometimes, blood tests may not show that a person has<unk> , especially in the early stages of the disease or during remission. A lymph node biopsy can be performed to diagnose certain types of<unk>  in certain situations. Following diagnosis, blood chemistry tests can be used to determine the degree of liver and kidney damage or the effects of chemotherapy on the person. When concerns arise about other damages due to<unk> , doctors may use an X-ray, MRI, or ultrasound. These can potentially show<unk> 's effects on such body parts as bones (X-ray), the brain (MRI), or the kidneys, spleen, and liver (ultrasound). CT scans can be used to check lymph nodes in the chest, though this is uncommon. Despite the use of these methods to diagnose whether or not a person has<unk> , many people have not been diagnosed because many of the symptoms are vague, non-specific, and can refer to other diseases. For this reason, the American Cancer Society estimates that at least<unk> -fifth of the people with<unk>  have not yet been diagnosed.
Leukemia
Paracoccidioidomycosis
Pythiosis
Progressive vaccinia
Agranulocytosis
Granulocytosis
Acute leukemia
Leukopenia