Bosniak classification for renal cysts…


Had a gentleman come in for trauma to the abdomen and his incidental finding on CT abdomen was a “Bosniak Type-2 renal cyst”:

Bosniak 2 cyst

On the right kidney you can see a hypoattenuated lesion, less than 3 cm. 

Kidney cysts are one of the most common incidental findings in radiology.  There exhists a Bosniak classification system to help with further workup.  A summary can be found on radiopaedia.org:

Bosniak renal cyst classification

Author:  Russell Jones, MD

References

1.  Weerakkody Y, Gaillard F, et al.  Bosniak renal cyst classification.  www.radiopaedia.org.  Accessed 5/2013.

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