A<unk> , also spelled<unk> , or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries. A<unk>  is benign and is initially in liquid form spread among the tissues including in sacs between tissues where it may coagulate and solidify before blood is reabsorbed into blood vessels. An ecchymosis is a<unk>  of the skin larger than 10 mm. They may occur among and or within many areas such as skin and other organs, connective tissues, bone, joints and muscle. A collection of blood (or even a hemorrhage) may be aggravated by anticoagulant medication (blood thinner). Blood seepage and collection of blood may occur if heparin is given via an intramuscular route; to avoid this, heparin must be given intravenously or subcutaneously. It is not to be confused with hemangioma, which is an abnormal buildup/growth of blood vessels in the skin or internal organs.
Hematoma
Deep vein thrombosis
Seroma
Angioma
Coma
Breast hematoma
Stoma 
Noma 