What is the Difference Between Myeloma and Lymphoma?

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Myeloma and lymphoma are both cancers that affect cells in a person's blood, but they originate in different cell types and locations in the body. Here are the key differences between the two:

  1. Origin: Myeloma is a cancer of plasma cells, which are present in the bone marrow. Lymphoma, on the other hand, is a cancer of lymphocytes, which are white blood cells that originate in the bone marrow and are present in blood and lymph tissue.
  2. Location: Myeloma occurs in the cells in the bone marrow, which are responsible for making antibodies. Lymphoma typically develops in the lymph nodes, and the cancer starts growing there.
  3. Risk Factors: The risk factors for myeloma include being over the age of 65 years, being male, having a family history of myeloma, obesity, and other factors. Lymphoma risk factors include having a family history of the condition, having a hepatitis C infection, and having an autoimmune condition.
  4. Symptoms: Common symptoms of myeloma include fatigue, weakness, fever, and night sweats. Lymphoma often presents with swollen lymph nodes in the neck, armpits, or groin, dizziness, unexplained weight loss, and visual difficulties such as blurred vision.
  5. Treatment: Treatment options for both myeloma and lymphoma may include chemotherapy, immunotherapy, stem cell transplants, and radiation therapy. However, the specific treatment plan will depend on the stage and type of the disease.
  6. Outlook: The average survival time for multiple myeloma is approximately 60% at the five-year mark. The outlook for lymphoma varies depending on the type and stage of the disease, but early detection and treatment can significantly improve the prognosis.

In summary, myeloma and lymphoma are both blood cancers that affect white blood cells, but they originate in different cell types and locations in the body. The specific treatment plan and prognosis depend on the stage and type of the disease.

Comparative Table: Myeloma vs Lymphoma

Here is a table comparing the differences between multiple myeloma (MM) and lymphoma:

Feature Multiple Myeloma Lymphoma
Affected Cells Plasma cells Lymphocytes (including B and T cells)
Location Bone marrow Lymph nodes and other lymph system parts
Risk Factors Age (over 65), gender (male), family history of MM, obesity Age, gender, family history, certain infections
Diagnosis Blood tests, bone marrow biopsy, X-ray, CT scan, MRI scan Blood tests, lymph node biopsy, X-ray, CT scan, MRI scan
Subtypes Light chain, non-secretory, IgM paraprotein (Waldenström's) Hodgkin vs. non-Hodgkin, B-cell vs. T-cell
Prevalence Rare (about 33,700 estimated cases in the US in 2022) More common than myeloma (about 87,790 estimated cases in the US in 2022)
5-Year Survival 53.9% (2022) Higher than myeloma overall; varies by subtype

Both multiple myeloma and lymphoma are cancers that affect blood cells, specifically plasma cells in the case of myeloma and lymphocytes in the case of lymphoma. The location where the cancer starts growing is a key difference, with myeloma developing in the bone marrow and lymphoma in the lymph nodes. Risk factors and diagnostic methods are also slightly different, but both conditions generally require blood tests, biopsies, and imaging scans for diagnosis.