Spleen

What the Spleen Is and What It Does

The spleen is an organ located in the upper left part of your abdomen, just under the ribs and above the stomach. It is part of both the lymphatic and blood systems. The spleen’s main jobs include filtering your blood to remove old or damaged red blood cells, helping fight infections by producing and storing white blood cells called lymphocytes, and holding a reserve of blood that can be useful in emergencies. It also helps recycle iron from old blood cells and supports your immune system by identifying and attacking germs and abnormal cells.

Why the Spleen Matters in Cancer Care

In cancer care, the spleen can be important because some cancers affect blood cells or the immune system, which involve the spleen. For example, certain types of leukemia or lymphoma can cause cancer cells to grow in the spleen. This may lead to symptoms like feeling full or pain under the left ribs. Sometimes doctors may need to check the spleen with imaging tests or blood tests to see if cancer has spread there. In some cases, surgery to remove the spleen (called a splenectomy) might be part of treatment. Understanding the spleen’s role helps patients and caregivers recognize why it might come up during diagnosis, treatment, or follow-up.

What Patients Might Hear or Experience

You might hear your care team mention the spleen when discussing symptoms such as tiredness, weight loss, night sweats, fever, or a feeling of fullness on the left side of your abdomen. These symptoms can sometimes be related to cancer involving the spleen or other organs. Test results might mention the size or condition of the spleen, especially if doctors are checking whether cancer has spread. It’s important to ask your care team what the findings mean for your care and what to expect next.

How the Spleen Is Used in Diagnosis and Monitoring

Doctors may use physical exams, blood tests, imaging scans like ultrasounds or CT scans, and sometimes biopsies to learn about the spleen’s health and involvement in cancer. These tests help determine if cancer has spread to the spleen or if the spleen is affected by blood disorders. Monitoring the spleen over time can help track how well treatment is working or if the disease is changing. Your care team will explain what the tests show and how that information guides your treatment plan.

What the Term Spleen Does Not Automatically Mean

Hearing the word “spleen” does not mean you have cancer or that your spleen is damaged. It is a normal part of the body and is often mentioned because it plays a role in blood and immune health. The spleen can be involved in many conditions, not just cancer. Always ask your care team to explain what the term means in your specific case rather than assuming it is a diagnosis or treatment by itself.

Questions to Ask Your Care Team

If you hear about the spleen in your medical reports or discussions, you might ask: How is my spleen affected by my condition? Are there any symptoms I should watch for? Will I need tests or treatment related to my spleen? What does the size or condition of my spleen mean for my care? Could removing the spleen be part of my treatment? Understanding these points can help you feel more informed and involved in your care.

Reading the Term in Context

The spleen is often mentioned alongside other organs like the liver, lymph nodes, or bone marrow, especially in cancers that affect blood or immune cells. When you see the term, look at the full context—such as symptoms, test results, or treatment plans—to understand what it means for you. It is not a diagnosis on its own but part of a bigger picture your care team is managing.

Important Safety Note

This information is meant to help you understand what the spleen is and why it might be mentioned in cancer care. It does not replace advice from your doctors or specialists. Every person’s situation is unique, so always ask your care team how the information applies to you and what steps you should take next.

Next Steps for Patients and Caregivers

If you come across the term spleen in your medical records or conversations, the best next step is to ask your care team to explain what it means for your diagnosis, treatment, or monitoring. Knowing how the spleen fits into your care can help you feel more confident and prepared as you manage your health.