What are kidney cysts?
Kidney cysts are abnormal pouches containing fluid. The simple cyst
is the most common form of kidney cyst. Although its cause is not
fully understood, we do know that the simple cyst is not an
inherited condition. Cysts may be single or multiple and develop on
small tubes in the kidneys.
What are the effects of kidney cysts?
Most often, kidney cysts do not cause symptoms or harm the kidney.
In some cases, however, pain can occur when cysts enlarge and press
on other organs. Sometimes cysts become infected or suddenly start
to bleed. Less often, the cysts impair kidney function. Cysts can
also cause high blood pressure.
How are kidney cysts diagnosed?
Kidney cysts are found by performing tests, such as tomography and
ultrasonography of the kidneys.
What is the treatment for kidney cysts?
When the most common kind of simple cysts (Bosniak I) are found and
there are no complications, no treatment and no further testing is
needed. In the rare cases where this kind of cyst causes symptoms,
then drainage of the cyst or surgery may be needed. Some cysts
(Bosniak II) have characteristics that are slightly different than
the simple cyst. These cysts usually require no treatment, but
periodically your doctor may want to repeat tests to be sure the
cyst does not change over time. Uncommon types of cysts, (Bosniak
III or IV) can be worrisime for a tumor, and may require removal.