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how is thrombocytosis diagnosed

by Joany Ebert Published 2 years ago Updated 2 years ago
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Your doctor might detect thrombocytosis in a routine blood test result that shows a high platelet level. If your blood test indicates thrombocytosis, it's important to determine whether it's reactive thrombocytosis or essential thrombocythemia
essential thrombocythemia
Essential thrombocythemia is a type of chronic myeloproliferative disorder. That means your bone marrow, the spongy tissue inside your bones, makes too many of a certain type of cell. In the case of essential thrombocythemia, the bone marrow makes too many cells that create platelets.
https://www.mayoclinic.org › symptoms-causes › syc-20361064
to know how to manage the condition.
Oct 27, 2020

Common tests & procedures

  • Headache
  • Dizziness or lightheadedness
  • Chest pain
  • Weakness
  • Numbness or tingling of the hands and feet

What are the signs and symptoms of secondary thrombocytosis?

People who have thrombocythemia with no symptoms often do not need treatment. Other people who have this condition may need medicines or procedures to treat it. Treatment does not cure your condition, but it can help prevent blood clots and serious complications. Treatment for secondary thrombocytosis depends on its cause.

Can thrombocytosis be cured?

  • Chronic inflammation (for example, rheumatoid arthritis or systemic lupus erythematosus).
  • Drug therapy (for example, corticosteroids).
  • Haemolysis.
  • Iron deficiency — this is the most common cause of secondary thrombocytosis.
  • Severe systemic infections (such as pericarditis or endocarditis).
  • Some specific cancers.
  • Splenectomy, hyposplenism.

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What causes thrombocythemia and thrombocytosis?

  • Headaches and chest pains
  • Fatigue and weakness
  • Dizziness and vertigo
  • Changes in vision
  • Tingling and numbness in the feet and hands
  • Abnormal bleeding after an injury
  • Nose and gum bleeding
  • Propensity to bruise
  • Bloody stools
  • Ulcerations on the feet and hands

More items...

How to identify the symptoms of high platelets?

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What is the most common cause of high platelet count?

Inflammatory conditions like autoimmune diseases, cancer or trauma, as well as certain infections and iron deficiency, are common causes of a high platelet count. Treatment is directed at the stimulus, and the platelet count returns to normal once resolved.

Is thrombocytosis serious?

Thrombocythemia and thrombocytosis may cause blood clots which can block blood flow to your organs. This can lead to the following serious complications: Venous thromboembolism. Stroke and transient ischemic attacks.

What will doctor do if platelets are high?

Your doctor might prescribe platelet-lowering drugs primarily in the form of hydroxyurea (Droxia, Hydrea) or interferon alfa (Intron A). Platelets can be removed from your blood by a procedure that's similar to dialysis.

Can you live a normal life with thrombocytosis?

Essential thrombocythemia, also known as ET, is a rare disease. The most important first fact about ET: on average, people with ET have a normal life expectancy.

What are the symptoms of thrombocytosis?

SymptomsHeadache.Dizziness or lightheadedness.Chest pain.Weakness.Numbness or tingling of the hands and feet.

What cancers cause thrombocytosis?

Thrombocytosis can be a marker for potential cancer, including lung, endometrial, gastric, oesophageal, or colorectal cancer. The causes of thrombocytopenia are diverse, but can be considered as arising from three main causes: Reduced platelet production as a result of marrow-based disorders.

How do I bring my platelets down?

Lifestyle and home remediesEat healthy foods. Choose a varied diet rich in whole grains, vegetables and fruits, and low in saturated fats. Try to avoid trans fats. ... Increase your physical activity. Aim for at least 30 minutes of moderate physical activity a day. ... Stop smoking. Smoking increases your risk of blood clots.

What cancers cause high platelets?

A recent increase in the platelet count was associated with risk of colon cancer (OR, 5.52; 95% CI, 5.21-5.86), lung cancer (OR, 4.77; 95% CI, 4.51-5.04), ovarian cancer (OR, 7.23; 95% CI, 6.12-8.53), and stomach cancer (OR, 5.51; 95% CI, 4.82-6.29) (Figure 3 and eTable 7 in the Supplement).

Is thrombocytosis an emergency?

Summary. Thrombocytosis—having too many platelets in the blood—does not normally have symptoms. However, once diagnosed with thrombocytosis, any symptoms of blood clots should warrant seeking emergency medical help.

How long does thrombocytosis last?

Reactive thrombocytosis is a predictable finding after splenectomy, with the platelet count peaking at 1 to 3 weeks and returning to normal levels in weeks, months, and, rarely, years (3).

What is the alarming level of platelets?

Dangerous internal bleeding can occur when your platelet count falls below 10,000 platelets per microliter. Though rare, severe thrombocytopenia can cause bleeding into the brain, which can be fatal.

What cancers cause thrombocytosis?

Thrombocytosis can be a marker for potential cancer, including lung, endometrial, gastric, oesophageal, or colorectal cancer. The causes of thrombocytopenia are diverse, but can be considered as arising from three main causes: Reduced platelet production as a result of marrow-based disorders.

What is thrombocytosis in blood?

What is thrombocytosis? Thrombocytosis refers to having too many platelets in your blood. Platelets are blood cells in plasma that stop bleeding by sticking together to form a clot. Too many platelets can lead to certain conditions, including stroke, heart attack or a clot in the blood vessels.

What causes secondary thrombocytosis?

Secondary, or reactive, thrombocytosis is caused by another condition the patient may be suffering from, such as: ++Anemia++ due to iron deficiency. Cancer. Inflammation or infection, Surgery, especially splenectomy (removal of the spleen).

What is the procedure to remove blood and remove platelets?

In cases of severe life-threatening thrombocytosis, a procedure called plateletpheresis is performed to immediately lower the platelet count to safer levels. In this procedure, a special instrument is used to remove blood, separate and remove the platelets, and then return the other blood cells to the patient.

What happens if you have blood clots in your abdomen?

Abnormal blood clotting can also occur, leading to stroke, heart attack and unusual clots in the blood vessels of the abdomen.

How to tell if you have a symtom?

If you do have symptoms, they can include: 1 Skin bruising. 2 Bleeding from places like the nose, mouth and gums. 3 Bleeding in the stomach or intestinal tract..

Is thrombocytosis an inherited disease?

It is also called essential thrombocythemia (or ET). The cause is unknown. It isn’t considered an inherited (genetic) condition even though certain gene mutations have been found in the blood or bone marrow.

Can you take aspirin for thrombocytosis?

Secondary forms of thrombocytosis rarely require treatment. For those with symptoms, a few treatment options are available. One is to treat the disease that is causing thrombocytosis. In some cases, you can take aspirin to help prevent blood clots.

What is the threshold for thrombocytosis?

The threshold for clinically significant thrombocytosis is variable from patient to patient, and the exact definition of thrombocytosis also varies in the literature, although a platelet count of ≥450 × 109/L is a generally accepted value [1]. A cohort study evaluating 10,000 Italian patients found a platelet count greater than 409 × 109/L for women and 381 × 109/L for men represented the 99th percentile in this population [2]. In this cohort, 99 patients (0.99%) had a platelet count greater than 400 × 109/L on first measurement, with only 8 of these 99 exhibiting persistent thrombocytosis on re-evaluation 8 months later, reinforcing the importance of re-evaluation for persistence of thrombocytosis. Thrombocytosis has a multitude of potential etiologies and thus evaluation of a patient with thrombocytosis requires careful consideration of patient history, comorbid conditions, other hematologic parameters, and past platelet counts. In general, causes of thrombocytosis can be described as spurious, reactive, or clonal in nature (Table 1) [3].

What is the risk factor for thrombosis in PV and ET?

Another more recently described independent risk factor for thrombosis in PV and ET is leukocytosis [106, 118–120]. The precise mechanisms behind this association are not entirely clear, although it is likely that qualitative leukocyte abnormalities play as large a role as quantitative increases in these diseases. The relative importance of qualitative leukocyte abnormalities is also supported by the fact that patients with CML, who typically have the highest leukocyte counts of all the MPNs, have a much lower rate of thrombosis than any of the Ph- MPNs [121]. Activated granulocytes are known to play an important role in platelet activation and endothelial injury [104], and patients with ET and PV have evidence of increased granulocyte activation as compared to normal controls [122]; an association between JAK2V617Fand constitutive activation of granulocytes has also been suggested [64]. Another feature of this increased risk which speaks to a qualitative component is the degree of leukocytosis which confers an excess risk. Multiple series have shown that a leukocyte count of >8.7 × 109/L, well within the normal range, is associated with excess thrombotic risk in both PV and ET [118, 120], with ROC analysis in one study showing a leukocyte count of 9.4 × 109/L having the best sensitivity and specificity for demarcating high-and low-risk patients [118]. The implications of this association in regards to treatment of these disorders remain controversial, although it may provide a rationale for the efficacy of cytoreductive therapy and a leukocyte count of <10 × 109/L has been integrated into recently revised European LeukemiaNet response criteria for PV and ET [123].

What is the rate of macrovascular thrombotic complications?

The rate of macrovascular thrombotic complications at diagnosis ranges 11–25% in ET and 12–39% in PV [102–106], with arterial thrombosis comprising the majority of events. The cerebrovascular circulation, either in the form of stroke or transient ischemic attack, is the most common site of arterial thrombotic disease, followed by the coronary arteries and peripheral vasculature [102, 105, 107, 108]. The arterial predominance of thrombotic events is more marked in ET than in PV, where up to ≈40% of thrombotic events are venous in nature [102, 105, 109]. Of special significance are venous thromboses in unusual locations such as the splanchnic veins and cerebral sinuses, as >50% of venous thrombotic events in PV and ET occur in these locations [110, 111]; this is especially true in younger patients [112]. Given the frequency of thrombotic events in these unusual locations, strong consideration should be given to evaluation for occult Ph- MPN in any patient presenting with splanchnic or cerebral sinus thrombosis. Case series have reported that 23–51% of patients suffering from splanchnic thrombosis without any other risk factors can be diagnosed with an underlying Ph- MPN at the time of thrombosis [113, 114], and JAK2V617F mutations have been demonstrated in a number of such patients, many of which only met full criteria for a Ph- MPN later in their course [115, 116].

What is the treatment for PV and ET?

Treatments to this end fall into essentially two categories: cytoreductive therapy with an aim to decrease circulating platelet count (as well as hematocrit in PV) and antiplatelet therapy, usually in the form of aspirin. Given these treatment approaches, much work has been done in an effort to risk-stratify patients to determine which patients will benefit from either or both of the above classes of therapy. Risk assessment and subsequent therapy based on risk of thrombosis has led to a variety of treatment strategies based on risk (Figures ​(Figures33and ​and44).

Is thrombocytosis spurious?

The differential diagnosis for thrombocytosis is broad and the diagnostic process can be challenging. Thrombocytosis can be spurious, attributed to a reactive process or due to clonal disorder. This distinction is important as it carries implications for evaluation, prognosis, and treatment. Clonal thrombocytosis associated with the myeloproliferative neoplasms, especially essential thrombocythemia and polycythemia vera, carries a unique prognostic profile, with a markedly increased risk of thrombosis. This risk is the driving factor behind treatment strategies in these disorders. Clinical trials utilizing targeted therapies in thrombocytosis are ongoing with new therapeutic targets waiting to be explored. This paper will outline the mechanisms underlying thrombocytosis, the diagnostic evaluation of thrombocytosis, complications of thrombocytosis with a special focus on thrombotic risk as well as treatment options for clonal processes leading to thrombocytosis, including essential thrombocythemia and polycythemia vera.

Is clonal thrombocytosis a major cause of morbidity and mortality?

In clonal thrombocytosis, especially in ET and PV, thrombotic complications are a major cause of morbidity and mortality and the primary factor in determining treatment strategy. Although thrombosis can be an issue in other causes of clonal thrombocytosis, it is most common and most thoroughly investigated in PV and ET, and thus these diseases will be the focus of discussion.

Is age a risk factor for thrombosis?

Age is a significant risk factor for thrombosis in the general population [117] , and multiple different epidemiologic studies have shown increasing risk for thrombosis in PV and ET with increasing age [102, 105–107]. Another consistently demonstrated risk factor for thrombosis in patients with PV and ET is a prior thrombotic event [98, 102, 105–107]. The combination of age >65 and a prior thrombotic event is associated with a markedly increased risk of thrombosis in PV, with a thrombosis rate in the European Collaboration on Low-Dose Aspirin in Polycythemia Vera (ECLAP) trial of 10.9 events/100 persons/year as compared to 2.5 events/100 persons/year in those without either risk factor [102].

Is thrombocytosis spurious?

Thrombocytosis can be spurious, attributed to a reactive process or due to clona …. Thrombocytosis is a commonly encountered clinical scenario, with a large proportion of cases discovered incidentally. The differential diagnosis for thrombocytosis is broad and the diagnostic process can be challenging. Thrombo cytosis can be spurious, attributed ...

Is thrombocytosis a clinical scenario?

Thrombocytosis is a commonly encountered clinical scenario, with a large proportion of cases discovered incidentally. The differential diagnosis for thrombocytosis is broad and the diagnostic process can be challenging. Thrombocytosis can be spurious, attributed to a reactive process or due to clonal disorder.

Is clonal thrombocytosis associated with myeloproliferative ne?

Clonal thrombocytosis associated with the myeloproliferative neoplasms, especially essential thrombocythemia and polycythemia vera, carries a unique prognostic profile, with a markedly increased risk of thrombosis . This risk is the driving factor behind treatment strategies in these disorders.

How to detect thrombocytosis?

Your doctor might detect thrombocytosis in a routine blood test result that shows a high platelet level. If your blood test indicates thrombocytosis, it's important to determine whether it's reactive thrombocytosis or essential thrombocythemia to know how to manage the condition.

What is reactive thrombocytosis?

It's called reactive thrombocytosis or secondary thrombocytosis when the cause is an underlying condition, such as an infection. Less commonly, when thrombocytosis has no apparent underlying condition as a cause, the disorder is called primary thrombocythemia or essential thrombocythemia. This is a blood and bone marrow disease.

What is the role of platelets in blood clots?

Platelets are blood particles produced in the bone marrow that play an important role in the process of forming blood clots. Thrombocytosis (throm-boe-sie-TOE-sis) is a disorder in which your body produces too many platelets.

Why is my bone marrow abnormal?

The cause of this disorder is unclear but it often appears to be connected to mutations in a variety of genes. Your bone marrow produces too many of the cells that form platelets and these platelets are often abnormal. This poses a much higher risk of clotting or bleeding complications than does reactive thrombocytosis.

Do people with thrombocytosis have symptoms?

People with thrombocytosis often don't have signs or symptoms. Signs and symptoms of reactive thrombocytosis, if they do occur, relate to the underlying condition.

Can thrombocytosis cause platelets to be higher than normal?

Because thrombocytosis isn't likely to cause symptoms, you probably won't know you have it unless a routine blood test reveals a higher than normal number of platelets. If that occurs, your doctor will try to determine the reason.

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