This is necrosis of soft tissue caused by obstructed circulation
[DOC] [TLE] gangrenous necrosis - Medical dictionary [PAR] cell death caused by a combination of ischemia and superimposed bacterial 
infection, ... 1. necrosis or death of soft tissue due to obstructed circulation, 
usually... [DOC] [TLE] lymphedema [Lymphedema People] [PAR] The lymph system is one of your body's circulatory systems.