what is the difference between primary polycythemia and secondary polycythemia?
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Causes of polycythemia are primary or secondary. In primary polycythemia, abnormalities in red blood cell production cause an increase in red cell count. In secondary polycythemia, factors external to red blood cell production (for example, hypoxia, sleep apnea, certain tumors) result in polycythemia.
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It can be primary or secondary: Primary hyperthyroidism is the term used when the pathology is within the thyroid gland. Secondary hyperthyroidism is the term used when the thyroid gland is stimulated by excessive thyroid-stimulating hormone (TSH) in the circulation.
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Polycythemia (high red blood cell count) definition and facts. Symptoms of a high red blood cell count include headache and fatigue. Polycythemia means increased red blood cell volume.
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Polycythemia Vera: Prognosis and Life Expectancy. Polycythemia vera (PV) is a rare blood cancer. While no cure exists for PV, it can be controlled through treatment, and you can live with the disease for many years.
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Primarily amenorrhea is classified into 2 types determined by pathogenesis. [4]Primary amenorrhea is the absence of initiation of menses, and secondary amenorrhea is an absence of menses in a previously normal menstruating female.
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Pulmonary hypertension was previously divided into primary and secondary categories; primary pulmonary hypertension described an idiopathic hypertensive vasculopathy exclusively affecting the pulmonary circulation, whereas secondary pulmonary hypertension was associated with a causal underlying disease process.
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Polycythemia vera affects slightly more men than women. The disorder is estimated to affect approximately 2 people per 100,000 in the general population. It occurs most often in individuals more than 60 years old, but can affect individuals of any age. It is extremely rare in individuals under 20.
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Polycythemia in the Newborn. Polycythemia is an abnormally high concentration of red blood cells. This disorder may result from postmaturity, diabetes in the mother, twin-to-twin transfusions, in which blood flows from one fetus to the other, or a low oxygen level in the fetus's blood.
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Microcytic anemia definition The red blood cells it does have are also too small. Several different types of anemias can be described as microcytic. Microcytic anemias are caused by conditions that prevent your body from producing enough hemoglobin. Hemoglobin is a component of your blood.
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A high platelet count can happen when something causes the bone marrow to make too many platelets. When the reason is unknown, it is called primary, or essential, thrombocytosis. When excess platelets are due to an infection or other condition, it is called secondary thrombocytosis.
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Thrombocytosis (throm-boe-sie-TOE-sis) is a disorder in which your body produces too many platelets. It's called reactive thrombocytosis or secondary thrombocytosis when the cause is an underlying condition, such as an infection.
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In medical lingo, "primary" refers to the original site of the tumor (for example, the breast or the colon). "Secondary" refers to any additional sites where the cancer has spread (for example, the lungs or the bone).
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In metastatic lung cancer, the cells keep the features of the original cancer. Second primary cancers are rare and usually occur months or years after diagnosis and treatment of the original, or primary, cancer.
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What is the difference between a primary and secondary headache? A primary headache is a headache that is due to the headache condition itself and not due to another cause. A secondary headache is a headache that is present because of another condition such as a sinus headache from sinusitis.
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The main difference is the way each respective treatment is processed. Primary treatment works on sedimentation, where solids separate from the water through several different tanks. In contrast, secondary treatment uses aeration, biofiltration and the interaction of waste throughout its process.
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KEY DIFFERENCE Primary memory is also called internal memory whereas Secondary memory is also known as a Backup memory or Auxiliary memory. ... Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor.
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The principal difference in primary and secondary treatment is the process that breaks down the sewage in wastewater. ... The initial and primary water treatment process removes large matter from wastewater while the secondary treatment will remove smaller particles already dissolved or suspended.