Question
The CT nephrogram of a patient with loin pain is given below. All of the following can be included in the differential diagnoses except:
| A. | Acute pyelonephritis |
| B. | Autosomal recessive polycystic kidney disease |
| C. | Autosomal dominant polycystic kidney disease |
| D. | Acute renal vein thrombosis |
Show Answer
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Correct Answer � C Explanation |
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Explanation
The given image shows linear bands of contrast extending from the medulla of the kidney towards the cortex of the kidney, called a striated nephrogram seen on plain film and CT nephrography. Autosomal dominant polycystic kidney disease (ADPKD) shows swiss cheese nephrogram, not striated nephrogram.
Conditions which show striated nephrogram include:
- Unilateral:
- Acute ureteric obstruction
- Acute pyelonephritis
- Acute renal vein thrombosis
- Acutely following renal contusion
- Acute radiation therapy to the kidney
- Bilateral:
- Autosomal recessive polycystic kidney disease (ARPKD)
- Acute pyelonephritis (if it is bilateral)
- Acute tubular obstruction
- Acute tubular necrosis
- Hypotension