Renal Diseases Flashcards
What are the risk factors for contrast medium nephrotoxicity?
Impaired renal function
Dehydration
HOCM
Large dose of contrast
Nephrotoxic drugs
CCf
Over 70
Hypertension
Myeloma
How do you classify chronic renal parenchymal disease and name a few of each?
No papillary/calyceal abnormality:
Diffuse parenchymal loss -
Bilateral (chronic GNP, diffuse small vessel, hereditary nephropathy)
Unilateral (RAS, post irradiation, hypoplastic kidneys, post obstructive atrophy)
Focal loss-
Infarct, trauma
Papillary/calyceal abnormality
Diffuse loss-
Obstructive neph
Generalized reflux neph
No loss -
Papillary necrosis
TB
Medullary sponge kidney
Megacalyces
Pelvicalyceal cyst
Focal loss-
Focal reflux neph
Tb
Calculus disease
What are the radiology findings of renal infarct?
US - no flow
cT - enhanced images show wedge shaped perfusion defect. Rim of cortical enhancement with possible scar formation
MRI - loss of CM differentiation. Infarct area low T1 and T2. No enhancement with gadolinium
What are the radiology signs of renal failure
Chronic - small, thin parenchyma diffuse or local
