Most renal cyst symptoms are not obvious. Some patients may have the following symptoms because of the cyst itself and the increase of pressure and infection in the cyst:
Lumbar or abdominal discomfort or pain: the reason is due to the enlargement and expansion of the kidney, so that the renal capsule tension increases, the pedicle of the kidney is pulled, or adjacent organs pressure caused. In addition, kidney polycystic kidney caused by large water content, become heavy, falling pull, also cause lumbar pain. The pain characterized by pain, dull pain, fixed on one side or both sides, and to lower back radiation. If there is intracapsular hemorrhage or secondary infection, it will aggravate the pain suddenly. If combined with stones or bleeding clots, urinary tract obstruction, can appear renal colic.
Hematuria can be manifested as microscopic hematuria or gross hematuria. Episodes are periodic. During the attack, low back pain is often intensified, severe exercise, trauma, infection can be induced or aggravated. The reason of hemorrhage is that there are many arteries under the cyst wall. Because of the increase of pressure or the infection, the vessel wall rupture and bleeding.
Abdominal mass: sometimes the main reason for the patient's visit, 60% ~ 80% of patients with renal cysts can touch the swelling of the kidney. Generally speaking, the larger the kidney, the worse the renal function.
Proteinuria: general amount is not much, 24 hours urine will not exceed 2g. No nephrotic syndrome.
Hypertension: solid cyst compression kidney, causing renal ischemia, so that renin secretion increased, causing hypertension. In normal renal function, more than 50% of patients with renal cyst hypertension, renal dysfunction, the incidence of hypertension is higher.