Analgesic nephropathy CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief:  Shakiba Hassanzadeh, MD[2]

## ~~Overview~~

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~~Diagnosis is traditionally based on the clinical findings above in combination with excessive analgesic use. It is estimated that between 2 and 3 kg each of phenacetin or aspirin must be consumed before evidence of analgesic nephropathy becomes clinically apparent.~~

## ~~CT~~

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~~Once suspected, analgesic nephropathy can be confirmed with relative accuracy usingcomputed tomography (CT) imaging without contrast.[1] One trial demonstrated that the appearance of papillary calcifications on CT imaging was 92% sensitive and 100% specific for the diagnosis of analgesic nephropathy.[2]~~

## Overview

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CT scan without contrast of the abdomen is usually preferred for diagnosing analgesic nephropathy, the findings include: decrease in renal size, bumpy contours and papillary calcifications.

## CT Scan

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* Since renal biopsy is an invasive procedure, CT scan without contrast of the abdomen is usually preferred for diagnosing analgesic nephropathy.[3][1]
* The findings on CT scan in analgesic nephropathy include:[1]
* Decrease in renal size
* Bumpy contours
* Papillary calcifications

## References

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1. ↑ 1.0 1.1 1.2 de Broe ME, Elseviers MM (1998). "Analgesic nephropathy". N. Engl. J. Med. 338 (7): 446–52. PMID 9459649. Unknown parameter `|month=` ignored (help)
2. ↑ Elseviers MM, De Schepper A, Corthouts R; et al. (1995). "High diagnostic performance of CT scan for analgesic nephropathy in patients with incipient to severe renal failure". Kidney Int. 48 (4): 1316–23. PMID 8569094. Unknown parameter `|month=` ignored (help)CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
3. ↑ Template:Cite

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