the short answer to your question is: no. lymphedema means swelling ("edema") due to excessive lymph fluid ("lymph"). normally fluid circulates through the lymph glands and lymph system which trap and destroy bacteria viruses and other potentially harmful substances. after a mastectomy for example the lymph nodes of the upper arm often are removed which means the fluid that used to circulate through the lymph system instead pools in the tissue of the arms and causes swelling. this is one form of lymphedema. a connective tissue disease on the other hand is a disorder that affects the tissues that connect and support joints and organs. examples of these types of tissues are cartilage bone and fat. there are hundreds of types of connective tissue disorders some of which are inherited (genetic) and others that are autoimmune disorders. i hope this information helps!
is lymphedema a connective tissue disease?