Dermatofibroma are common benign skin tumours that cause lumps in the skin and frequently cause concern upon discovery. The causes of dermatofibroma may include a reaction to trauma such as insect bites but the precise cause is often unclear.
Complex Renal Cysts. Kidneys are bean shaped organs and are an important part of the urinary system. The main function of the kidneys is to eliminate waste and toxins from the body. Sometimes due to over accumulation of toxins or calcium deposits, cysts can form in the kidneys.
Kidney cyst is a closed pouch containing fluid that forms in the kidneys. These cysts are most often non-cancerous. However, over time, when renal cyst grows to a certain size, it will oppress the kidney surrounding tissues or organs. In such a condition, it is easy to cause the burst of blood vessels. That is one reason how bleeding cyst occurs. In addition, causes of hemorrhagic cysts include surgery, chemotherapy, radiation, or infection. The bigger renal cysts can be removed by the surgery, but sometimes, the surgery will cause trauma on the cysts, which lead to hemorrhagic cysts.