Lipedema: Insights into Morphology, Pathophysiology, and Challenges (part 3)

Morphology: How lipedema can progress over time, from subtle nodules and early fibrosis to heavier tissue, more pain, and fluid drainage problems.

Components of Adipose Tissue and Its Heterogeneity

Body fat is not just a collection of fat cells. Healthy fat tissue works like a small organ. It contains fat storing cells, but also many other cell types that “talk” to each other all the time. These include young fat cells that can grow into new fat cells, immune cells, blood related cells, and tiny lymph vessels. A key player in this system is the lining of small blood vessels, called the endothelium.

Inside fat tissue, very small blood vessels called capillaries deliver oxygen, fluids, and nutrients to the cells. Capillaries are made of a thin layer of endothelial cells. They also have support cells called pericytes wrapped around them, which help keep the vessels stable and working properly. In healthy fat tissue, these capillaries are built to control what passes in and out. Neighboring endothelial cells are tightly connected, so fluid does not simply leak between them. Instead, nutrients and other molecules are moved through the vessel wall in a controlled way.