Kidneys

A free gallery of high-resolution, ultrasound, color doppler and 3D images

Ultrasound images of diseases of the kidneys:

1) Autosomal Dominant Polycystic Kidney Disease (ADPCK):

Sonography of this 55 yr. old male patient, who presented with hematuria, reveal bilateral grossly enlarged kidneys (14 to 16 cms. in length, 8 to 10 cms. width). The kidneys are replaced by multiple large cysts (more than 2 in each kidney) of sizes varying from 2 to 5 cms. (Criteria for diagnosis of ADPCK: a) more than 2 renal cysts in one/ both kidneys, if age less than 30 yrs. b) 2 or more cysts in each kidney, if aged from 30 to 59 yrs. c) 4 cysts in each kidney if aged more than 60 yrs.) There is very little normal renal parenchyma seen in these images. Note that the cysts are non-communicating ruling out hydronephrosis. The right kidney shows an echogenic focus, in one cyst, which may be a calculus or calcification. A solitary cyst is seen in the right lobe of liver. These ultrasound images are diagnostic of Autosomal Dominant Polycystic Kidney (ADPCK) disease.

References:

1) http://en.wikipedia.org/wiki/Polycystic_kidney_disease (free article)

2) http://www.emedicine.com/med/topic1862.htm (free article)

2) Milk of Calcium cyst:

The above ultrasound images of the right kidney show echogenic debris layering at the dependent part of a small cyst. There is change in the fluid-debris interphase with change in position. There is minimal acoustic shadowing due to a relatively large amount of calcium debris. These are typical findings of Milk of Calcium within a renal cyst. Images courtesy of Dr. Ravi Kadasne, UAE.

Reference: 1) http://www.jultrasoundmed.org/cgi/content/abstract/11/5/195

2) http://www.sonoworld.com/Article/ShowArticleDetails.aspx?aid=20 (free article-- rated by us- excellent)

3) Pseudoaneurysm in Transplanted kidney:

Sonographic imaging was done on this patient who underwent renal transplant some time ago. The transplanted kidney is seen in the left iliac fossa in these ultrasound images. The first image shows a cystic lesion (anechoic) in the lower pole of transplanted kidney. The 2nd image also shows mild dilation of the renal pelvis and upper ureter in this kidney. Color doppler images reveal swirling flow pattern within the cystic lesion. There is also evidence of a communication of the lesion with a segmental artery. Real time imaging also revealed to and fro flow between the lesion and the artery. Diagnosis: pseudoaneurysm in transplant kidney. Images courtesy of Dr. Jaydeep Gandhi, Mumbai, India.

Reference: http://www.sonoworld.com/Sonoworld/Cases/Cases.aspx?CaseID=363 (free article)

4) Ectopic/ Pelvic kidney:

This female patient underwent routine abdominal ultrasound imaging. These ultrasound images show the right kidney just to the right of the uterus in the true pelvis. There was no kidney visualized in the right renal fossa. These sonographic images are diagnostic of ectopic kidney (in this case, a pelvic kidney). It is unusual to see the pelvic kidney so low down in the pelvis. Images courtesy of Dr. Ravi Kadasne, UAE.

Reference:

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1398389 (free article)

5) Horseshoe kidney:

Routine abdominal sonography of the abdomen in this patient revealed: a) kidneys located at a lower level than normal b) the lower poles of both kidneys pointing medially, c) a bridge of renal tissue or isthmus connecting the two kidneys. This isthmus is seen passing anterior to the abdominal aorta. Often, the lower poles of the kidneys are difficult to visualize in such cases. These ultrasound images are diagnostic of horseshoe kidney. Images taken by Dr. Ravi Kadasne, UAE, using a Toshiba Powervision ultrasound machine.

The above color doppler images show a large isthmus lying anterior to the abdominal aorta.

Images courtesy of Dr. G. V. Ramaiah, AP, India.

References: E-medicine article on Horseshoe kidney (free article and images- rated comprehensive)

6) Renal cell carcinoma:

This 57 yr. old male patient presented with abdominal pain and mass in abdomen. Sonography reveals a large, hypoechoic, inhomogenous mass (10 x 8 cms.) at the upper pole of the left kidney. The central portion is markedly hypoechoic suggestive of necrosis. The left renal vein appears normal. The right kidney shows a small cortical cyst and mild pelvic dilation. The urinary bladder was normal (not shown here). CT scan images confirm the large left renal mass with enhancement of the tumour and necrotic central area. These ultrasound images are suggestive of renal cell carcinoma. Ultrasound images taken with Toshiba Power Vision machine, courtesy of Dr. Ravi Kadasne, UAE.

Reference: http://www.emedicine.com/med/topic2002.htm (free article)

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This page was last edited on: Saturday September 20, 2008 04:25 PM

Contact: joe@ultrasound-images.com or drjoea (at) gmail.com