Editing Renal cysts

Bosniak classification:
{| class="wikitable"
|Grade
|Description
|Rate of malignancy
|Follow-up
|-
|I
|Simple benign cysts with hairline-thin walls. No septations, calcifications or solid components. No enhancing soft tissue components.
|~0%
|None

None at all
|-
|II
|Benign cystic lesions. The cysts may have hairline-thin septations with fine calcifications in the walls. Minimal enhancement of the hairline-thin smooth wall may be seen. No enhancing soft tissue components are present. Non-enhancing high-attenuation cysts <3cm in size are included.
|~0%
|None

Really, none
|-
|IIF
|Complex cysts requiring follow-up imaging. These cysts are more complex and do not fit into category II or III. These cysts have an increased number of hairline septations or mild thickening of the wall and/or septations. No enhancing soft tissue components are present.
|~5%
|1-2 years
|-
|III
|Indeterminate masses. The cystic lesions have thickened walls and septations that are irregular. The cyst walls or septations demonstrate enhancement.
|~50%
|Biopsy
|-
|IV
|Malignant cystic masses. Thick and irregular walls and septations may be present but enhancing soft tissue components are seen, independent of wall of septal enhancement.
|~100%
|Consider excision
|}
[[Category:Urology]]