Draw Conclusion. What conclusions did Alfred Wegener draw about Pangaea? He concluded that it split apart and that the continents âdriftedâ to their present positions. QUICK CHECK
In most cases, only one area of nodes swells at a time. When more than one area of lymph nodes is swollen itâs called generalized lymphadenopathy. Some infections (such as strep throat and chicken pox), certain medicines, immune system diseases, and cancers like lymphoma and leukemia can cause this kind of swelling.emoval of one lymph node is called a biopsy. When many lymph nodes are removed, itâs called lymph node sampling or lymph node dissection. When cancer has spread to lymph nodes, thereâs a higher risk that the cancer might come back after surgery.
Causes of swollen lymph nodes. There are many causes for swollen lymph nodes. Most commonly, lymph nodes become swollen due to an infection, such as a viral upper respiratory infection like the common cold. Sometimes, lymph node swelling is caused by an underlying condition. Cancer that starts in another part of the body and spreads to the lymph nodes is called a metastasis. 2  Even when cancer spreads to the lymph nodes, it is still named after the area of the body where it started. 3  Learn more about metastatic cancer, including diagnosis and treatment.