What Is a Renal Scintigraphy?

There is evidence that the occurrence of cysts is due to the structure of the collecting tube and the renal tubule and the connection between them, and there are defects during development. A blind-ended excretory tube connected to a functioning glomerulus becomes a cyst. When these cysts increase, they compress the adjacent renal parenchyma, cause ischemia, destroy its function, and block normal renal tubules, eventually leading to progressive damage to renal function.

Bilateral intrarenal pain

Bilateral intrarenal pain ^[1]

There is evidence that the occurrence of cysts is due to the structure of the collecting tube and the renal tubule and the connection between them, and there are defects during development. A blind-ended excretory tube connected to a functioning glomerulus becomes a cyst. When these cysts increase, they compress the adjacent renal parenchyma, cause ischemia, destroy its function, and block normal renal tubules, eventually leading to progressive damage to renal function.

(1) Hydronephrosis (caused by congenital disease or acquired ureteral obstruction): bilateral flank abdominal masses may appear and renal function is impaired. However, pelvic venography and ultrasound will show that these performances are significantly different from polycystic kidney disease.

(2) Bilateral kidney tumor: This disease is rare, but it can be imagined with polycystic kidney in urinary tract films. When one side of the polycystic kidney is smaller or the urography does not show distortion, it is difficult to distinguish from one side of the kidney tumor. But tumors are usually limited to a certain part of the kidney, and polycystic kidney cysts are all over the kidney. Unilateral renal tumors may have normal renal function, while polycystic kidneys often have impaired total renal function. CT or renal angiography can be used to distinguish between the two diseases. Scintigraphy or ultrasound can also help with differential diagnosis.

(3) Von Hippel-Lindau disease (cerebellar hemangioma cysts, retinal hemangioma disease, and pancreatic tumors or cysts): Multiple cysts or adenocarcinoma of the kidney can progress in this disease. Urography or renal tomography can show polycystic kidney disease, which can be diagnosed according to other characteristic manifestations. CT, angiography, ultrasound imaging or scintigraphy can confirm the diagnosis.

(4) Nodular sclerosis (paroxysmal convulsions, mental retardation, and sebaceous adenomas): Sebaceous adenomas often involve the skin, brain, retina, bones, liver, heart, and kidneys. Renal lesions are usually bilateral, with hemangiolipoma visible under the microscope. Urography during the uremia phase is likely to suggest cystic kidney disease, and other characteristic manifestations and CT and ultrasound images can be used for identification.

(5) Simple renal cyst: usually unilateral and single, with normal renal function. Urography can show a single lesion, while polycystic kidney disease is bilateral and multiple lesions.

Bilateral Intrarenal Pain (1) Symptoms: The pull of the kidney from the renal vascular pedicle due to obstruction, infection, or hemorrhage in the cyst can cause one or both intrarenal pain. Microscopic or gross hematuria is common and can be severe, and the cause is unknown. Renal colic can manifest when blood clots or stones descend. Patients can find a abdominal mass on their own. Infections (plugging, fever, pain in the kidney area) are common complications of polycystic kidney disease. Bladder irritation can be the first symptom. With the occurrence of renal insufficiency, headache, nausea, vomiting, fatigue, and weight loss can occur.

(1) Pyelonephritis: A common complication of polycystic kidney disease, the cause of which is unknown. Symptoms can be absent, and there are few or no pus cells in the urine. Smear staining or quantitative culture can make a diagnosis. Gallium citrate-67 scan photography can determine the site of infection including the location of the abscess.

(2) Cyst infection: it can cause pain and tenderness in the kidney area, and fever can occur. It is not easy to distinguish between polycystic kidney infection and pyelonephritis, and gallium scanning photography will be helpful at this time.

(3) Hematuria: Very few cases can occur with active gross hematuria, which can be life-threatening.