When should swollen lymph nodes be a cause for concern, especially with a family history of lymphoma?

Swollen lymph nodes can be a common occurrence and are usually a sign that your body is fighting off an infection. However, in some cases, swollen lymph nodes can be a symptom of lymphoma, a type of blood cancer. If you have a family history of lymphoma, it's natural to be concerned about swollen lymph nodes. Here are some factors to consider and when you should seek medical attention:

1. Size: Lymph nodes are designed to change in size as they respond to infections. However, if a swollen lymph node is larger than 1.5 centimeters (about ¾ of an inch) or continues to grow over time, it should be checked out [1].

2. Duration: Swollen lymph nodes caused by infections usually resolve on their own within two weeks. If a swollen lymph node persists for more than two weeks or keeps getting bigger, it is advisable to see a doctor [1].

3. Consistency: Healthy lymph nodes are usually soft and rubbery to the touch. If a swollen lymph node feels hard or solid, it may be a cause for concern and should be evaluated by a healthcare professional [1].

4. Age: Infections are a common cause of swollen lymph nodes in younger individuals, such as teens or college students. However, in older individuals, especially those with a family history of lymphoma, it is important to rule out cancer as a potential cause [1].

5. Other symptoms: Pay attention to any additional symptoms that may accompany swollen lymph nodes. These can include unexplained weight loss, fevers, night sweats, fatigue, itchy skin, or persistent muscle aches. If you experience these symptoms along with swollen lymph nodes, it is recommended to consult a doctor [1,2].

It's important to remember that while swollen lymph nodes can be a sign of lymphoma, they are more commonly caused by infections or other non-cancerous conditions. If you have concerns about swollen lymph nodes, it is always best to consult with a healthcare professional who can evaluate your specific situation and provide appropriate guidance.

Learn more:

1. Are swollen lymph nodes in your neck a symptom of lymphoma? | MD Anderson Cancer Center
2. Lymphoma - Symptoms and causes - Mayo Clinic
3. Lymph Nodes & Cancer | What are Lymph Nodes? | American Cancer Society