Beneath the dermis is a layer of subcutaneous tissue that mainly consists of fat and connective tissue. Subcutaneous emphysema is the presence of air in the subcutaneous tissue. Possible causes ...

a “very rare” type of skin cancer that grows on the connective tissue cells in the middle layer of the skin known as the dermis, Mayo Clinic says. The tumor may initially look similar to a ...

and mesenchymal tumors arising from the supporting tissues of the dermis and subcutis, such as fibrous connective tissue (fibrosarcoma), blood vessels (hemangioendothelioma, hemangiopericytoma ...