Free on board (FOB) is a contractual term that refers to the requirement that the seller deliver goods at the seller's cost via a specific route to a destination designated by the buyer. How It Works To understand how FOB terms work, let's look at an example.
A kidney cyst or renal cyst, is a fluid collection within the kidney. Most kidney cysts are âsimpleâ or âbenignâ meaning no treatment is required. Some cysts are more âcomplexâ and require either close radiographic imaging (with either a CT scan or MRI) or surgery since these cysts can be cancerous.
What causes simple kidney cysts? The cause of simple kidney cysts is not fully understood. Obstruction of tubulesâtiny structures within the kidneys that collect urineâor deficiency of blood supply to the kidneys may play a role. Diverticulaâsacs that form on the tubulesâmay detach and become simple kidney cysts. The role of genetic factors in the development of simple kidney cysts has not been studied. What are the symptoms of simple kidney cysts? Simple kidney cysts usually do not cause symptoms or harm the kidneys. In some cases, however, pain can occur between the ribs and hips when cysts enlarge and press on other organs. Sometimes cysts become infected, causing fever, pain, and tenderness.