Renal cyst including solitary renal cyst, congenital polycystic kidney and multiple congenital renal cyst. Patients usually do not have any symptoms, only through the B ultrasound examination found that the kidney on one or a few cysts.
A small number of people can also be a number of cysts, but both sides of the cysts are rare. The wall of the cyst is very thin, and the cyst is clear yellow liquid. The reason of renal cyst is not very clear, it is generally considered to belong to the kidney degenerative change, so many of the elderly. Small cysts do not cause any symptoms. Recently, due to the extensive development of B ultrasound, so there are also found that kidney cysts increased.
What are the main clinical manifestations of renal cysts?
Most renal cysts have no symptoms. Some patients may be increased because of the pressure, the cyst itself and intracystic infection and the following symptoms:
Lumbar, abdominal discomfort or pain: the reason is due to the enlargement and expansion of the kidney, so that the tension of the capsule of the kidney, the renal pedicle was pulled, or adjacent organs caused by pressure. In addition, polycystic kidneys cause kidney water, becomes heavy, pull down, will also cause the waist pain. The pain characterized by pain, dull pain, fixed on one side or both sides, and to lower back radiation. If there is a cystic hemorrhage or secondary infection, the pain will suddenly increase. As with stones or bleeding after clot urinary tract obstruction, renal colic can be.
Hematuria: can be manifested as microscopic hematuria or gross hematuria. Onset of periodicity. The onset of back pain is often aggravated, strenuous exercise, trauma, infection can be induced or aggravated. The reason is because there are many blood vessels under the capsule wall, due to increased pressure or infection, so that the blood vessel wall due to excessive traction and rupture bleeding.
Abdominal mass: sometimes the main reason for patients to see a doctor, 60% ~ 80% of patients can touch the enlarged kidney. In general, the greater the kidney, the worse the renal function.
The amount of proteinuria: not much, 24 hours urine does not exceed 2g. Nephrotic syndrome.
The hypertension: solid kidney cyst compression, caused by renal ischemia, the renin secretion, caused by hypertension. In normal renal function, more than 50% of patients with high blood pressure, renal function, the incidence of hypertension is higher.
The decline in renal function due to cyst occupying, oppression, make normal renal tissue significantly reduced kidney function loss.
What is the diagnosis of renal cysts?
The most reliable methods include X-ray, B type ultrasonography, radionuclide scanning and CT examination. In renal cyst, X-ray urography could see the renal pelvis compression deformation, but the edge is smooth, no damage. Renal cyst is not a tumor, but it is easy to be confused with the tumor.
Identification of the two methods can be used in renal parenchymal tomography or renal arteriography. In the renal parenchyma tomography, the location of the cyst was shallow and the location of the tumor was deep. When the renal arteriography was performed, the blood vessels of the cysts were sparse, and there was no contrast agent. The renal malignant tumors were rich in blood vessels, and the contrast agent was concentrated. When the cyst is suspected to be malignant, the cyst puncture can be carried out, the cyst fluid can be taken out for routine examination and the exfoliative cells can be examined. B ultrasound and CT are very easy to distinguish between renal cyst and renal parenchymal tumor, therefore, very ideal method of examination