Final answer:
Lymphoma is the most common tumor found in lymph tissue, with non-Hodgkin lymphoma being more common than Hodgkin lymphoma. Lymphoma can originate in the lymph nodes and affects B or T lymphocytes.
Step-by-step explanation:
The most common tumor found in lymph tissue is lymphoma. Lymphoma is a type of cancer that can originate in the lymph nodes. It commonly affects B or T lymphocytes, with non-Hodgkin lymphoma (NHL) being more common than Hodgkin lymphoma (HL). NHL has many different subtypes depending on the specific cells that are affected.