What term describes the swelling of body tissues due to excessive fluid accumulation?

The term that describes the swelling of body tissues due to excessive fluid accumulation is known as anasarca. This condition is characterized by widespread edema, which means there is an abnormal accumulation of fluid in the interstitial spaces of the body. Anasarca typically involves severe generalized swelling and can be a sign of various underlying health problems, such as heart failure, kidney disease, or liver problems.

Edema refers to localized or systemic accumulation of fluid in the tissues but is a broader term that encompasses various types of fluid retention. It doesn't imply the extensive swelling that anasarca does.

Hydrocele specifically refers to the accumulation of fluid in the sac surrounding a testicle, and ascites is the fluid accumulation in the abdominal cavity. Both of these terms are more specific in their application and do not encompass the widespread swelling seen in anasarca.