The term neighborhood association is sometimes incorrectly used instead of homeowners association (HOA). But neighborhood associations are not homeowners associations (HOA). A HOA is a group of property owners with the legal authority to enforce rules and regulations that focus on restrictions and building and safety issues. On the other hand, a neighborhood association is a group of neighbors and business owners who work together for changes and improvements such as neighborhood safety ...
Lymphoma is a group of cancers that affect the cells that play a role in the immune system and primarily represents cells involved in the lymphatic system of the body. 1  The lymphatic system is part of the immune system. 2  Lymph nodes are small collections of lymph tissue that occur throughout the body.
Sonali Smith, MD, director of the UChicago Medicine lymphoma program, describes the types of lymphoma and their characteristics. Lymphoma refers to a family of cancers in the lymphatic system. The lymphatic system includes the organs, tissues and vessels in the immune system responsible for fighting disease and infection throughout the body.