1 A blood clot that forms inside one of your veins or arteries is called a thrombus. A thrombus may also form in your heart.  A thrombus that breaks loose and travels from one location in the body to another is called an embolus.
The kidneys. The kidneys do vital work in the body filtering blood removing waste into urine, and balancing electrolyte levels. Our blood in our bodies passes through the kidneys several times a day. The kidneys are located at the back of the abdomen. Each kidney is about the size of a fist - 10-12.5cm long.
Kidney Pain Location. Most people confuse kidney pain location as a mere back pain. This could be because people donât exactly know where the kidneys are located. Before we get any further about the symptoms, causes and treatment of kidney pain based on their location, let us first consider the anatomy of your kidneys.