kidney misc

Question 1

Answer 1

medullary nephrocalcinosis

Question 2

Answer 2

Question 3

bosniak classifcation?

Answer 3

2F

• septa calcs
• size > 3cm

Question 4

bosniak classification?

Answer 4

bosniak I

no septa, very simple

Question 5

what bosniak classification do you follow?

Answer 5

bosniak 2F

Question 6

which bosniak classifications do you excise?

Answer 6

3 and 4

Question 7

diabetic

Answer 7

emphysematous pyelonephritis

Question 8

is this mass enhancing?

Answer 8

yes!

Question 9

new finding. Management?

Answer 9

excise it

Question 10

trauma grade

Answer 10

IV

Question 11

Answer 11

Question 12

Next step?

Answer 12

Take it out!!

masses with 3 or more septa are NOT multisepated but they are multiLOCULATED

Question 13

two most common multilocated masses in an adult?

Answer 13

multilocular cystic nephroma and multilocular RCC

you cannot tell the difference between the two on imaging

Question 14

Answer 14

Question 15

history of schistosomiasis

Answer 15

Question 16

Answer 16

Question 17

Answer 17

schistosomiasis

Question 18

Answer 18

Question 19

fever and leukocytosis

Answer 19

pyelonephritis with right renal vein thrombus

Question 20

Answer 20

XGP with staghorn calc

Question 21

Answer 21

UPJ crossing vessel

Question 22

Answer 22

retroperitoneal liposarcoma

10–15% of all liposarcomas arise from the retroperitoneum

Question 23

Answer 23

retroperitoneal fibrosis

Question 24

50F

Answer 24

Mixed epithelial and stromal tumor (MEST)

Question 25

you see a hyperdense cyst on NON-contrast CT and think it is likely a benign hemorrhagic cyst. At what HU can you safely call it a hemorrhagic cyst?

Answer 25

\> 70 HU

Question 26

you see a hyperdense cyst on contrast-ENHANCED CT and think it is likely a benign hemorrhagic cyst. At what HU can you safely call it a hemorrhagic cyst?

Answer 26

trick question! a hyperdense cyst cannot be diagnosed if only post contrast imaging is available as there is no way to distinguish a hyperdense cyst from an enhancing mass

Question 27

treatment for pyonephrosis

Answer 27

emergent PCN

Question 28

when do you put a drain in a renal abscess

Answer 28

when \> 3cm

Question 29

sign to distinguish a ureteral stone from a phlebolith?

Answer 29

soft tissue rim sign. the presence of a small amount of soft tissue surrounding the calcificaiton suggests a ureteral stone rather than a vascular calcificaton

Question 30

Answer 30

papillary carcinoma demonstrates diffuse weak enhancement - difficult to see on standard post conrast images but best demonstrated on subtraction

Question 31

Answer 31

duplicated collecting system. two ureteral jets

Question 32

oncocytoma or RCC?

Answer 32

oncocytoma RCC is cold on PET, oncocytom is flaming hot