Autoimmune diseases that mimic leukemia often involve abnormal blood counts and symptoms like fatigue, fever, and easy bruising, with common examples including Systemic Lupus Erythematosus (SLE), Autoimmune Hemolytic Anemia, and Autoimmune Lymphoproliferative Syndrome (ALPS), all causing features like anemia, low platelets, or enlarged lymph nodes, sometimes requiring bone marrow studies to differentiate from blood cancers like leukemia or related conditions like Myelodysplastic Syndromes (MDS).
Ehrlichiosis can transiently cause white blood cells abnormalities that mimic leukemia/lymphoma and cases have been, on rare occasions, initially mistaken for hematological malignancies.
Myelodysplastic syndrome, or MDS, is a group of cancers that affect blood stem cells. These cells can't mature into healthy blood cells. This makes MDS often confused with leukemia, which is why getting the right diagnosis is so important.
Myelodysplastic syndrome refers to a group of related disorders in which abnormal blood-forming cells develop in the bone marrow. At first, these cells interfere with the production of normal blood cells. Later, these cells may become cancerous, turning into a form of leukemia.
Leukemia symptoms are frequently misdiagnosed as more common conditions, such as anemia, viral infections, or chronic fatigue syndrome. Shared symptoms, such as fatigue and frequent infections, can cause healthcare providers to focus on less severe explanations without considering the possibility of leukemia.
By looking at a sample of your blood, your doctor can determine if you have abnormal levels of red or white blood cells or platelets — which may suggest leukemia. A blood test may also show the presence of leukemia cells, though not all types of leukemia cause the leukemia cells to circulate in the blood.
Even noncancerous blood and marrow disorders can significantly affect your health. The most common blood cancers are leukemia, lymphoma and multiple myeloma, while examples of dangerous noncancerous blood disorders are sickle cell disease and aplastic anemia.
Other factors associated with false-positive cultures include an elevated WBC count [4] and culture bottle overfilling [10], although false-positive cultures are also seen in patients with a normal or even low WBC count [2–4].
In the past, MDS was sometimes referred to as pre-leukemia or smoldering leukemia. Now MDS is considered a form of cancer. MDS can also develop into a more serious cancer. In about 1 in 3 people with MDS, the disease can progress to acute myeloid leukemia (AML), a fast-growing cancer of bone marrow cells.
The main signs and symptoms of myeloma are:
Complete blood count and peripheral blood smear
Changes in the numbers and the way different types of blood cells look can often help diagnose leukemia. Most people with AML have too many immature white cells in their blood, and not enough red blood cells or platelets.
Chronic lymphocytic leukemia (CLL) is often a silent disease during the initial stages, with many patients having no noticeable symptoms. CLL is commonly detected by accident when routine blood testing reveals an elevated lymphocyte count (lymphocytosis).
Symptoms of myositis
The main symptom of myositis is muscle weakness, which can start very gradually and cause you to trip or fall over a lot. You may also find it difficult to do things like: get up from a chair. climb stairs.
Autoimmune hemolytic anemia (AIHA) is a rare red blood cell disorder that occurs when antibodies directed against a person's own red blood cells cause them to burst, leading to insufficient concentration in the blood.
Myelofibrosis signs and symptoms may include:
Complete blood count. A complete blood count (CBC) is the first test for diagnosing and monitoring leukemia. You will likely get multiple CBC tests throughout your treatment if you have leukemia. Your results help your doctors understand if your disease is advancing or how your body is responding to treatments.
Some people with myelodysplastic syndromes might eventually develop a cancer of the bone marrow and blood cells (leukemia).
Common leukemia signs and symptoms include:
Leukemia is commonly misdiagnosed as the following conditions:
Your doctor will conduct a complete blood count (CBC) to determine if you have leukemia. This test may reveal if you have leukemic cells. Abnormal levels of white blood cells and abnormally low red blood cell or platelet counts can also indicate leukemia.
The most common leukemia biomarkers are CD (cluster of differentiation) markers, an extremely diverse series of membrane proteins predominantly expressed on the leukocyte surface. CD markers are mostly useful for classifying white blood cells (WBC) and especially important for diagnosis of lymphomas and leukemias.
EBV is also the most common infectious trigger of hemophagocytic lymphohistiocytosis [2, 3]. The presentation of both diseases mimics lymphoreticular malignancies and frequently it can be mistaken for leukemia and lymphomas.
In time, some patients who have a myelodysplastic syndrome may develop leukemia.
Early signs of myeloma often include vague symptoms like persistent fatigue, bone pain (back, hips, ribs), frequent infections, unexplained bruising or bleeding, shortness of breath, and kidney issues (like frequent urination), though it can be asymptomatic early on and found in routine blood tests, leading to symptoms like thirst, confusion (from high calcium), or weakness. Because these symptoms can mimic other conditions, seeing a doctor for ongoing issues is crucial for proper diagnosis.