Renal Angiomyolipoma

KEY FACTS Imaging Discrete renal mass with varying amounts of dysmorphic blood vessels, smooth muscle, and mature adipose tissue Variable size, can be very large Single or multiple Classic angiomyolipoma (AML): Lipid-rich echogenic mass with posterior acoustic shadowing Fat-poor subtype ("AML with minimal fat"): Usually hyperechoic but fat not detected by CT or MR CT/MR more specific than US Color Doppler: Absent from fatty component, may…

Renal Cell Carcinoma

KEY FACTS Imaging Variable appearance: Solid, cystic, or complex Solid: Homogeneous or heterogeneous, hypervascular soft tissue components and areas of necrosis, calcifications Cystic variant: Unilocular or multilocular, fluid-debris levels (hemorrhage and necrosis), thick and irregular wall or septations, nodules Use Doppler for detection of internal vascularity RCC may be initially detected by US, but CECT and MR are primary tools for characterization and staging US may…

Renal Abscess

KEY FACTS Terminology Purulent &/or necrotic intraparenchymal or perinephric collection arising from unresolved pyelonephritis You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Multilocular Cystic Nephroma

KEY FACTS Terminology Rare, nonhereditary, benign cystic renal neoplasm containing epithelial and stromal components a.k.a. cystic nephroma, multilocular cystic renal tumor, cystic hamartoma You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Cystic Disease of Dialysis

KEY FACTS Terminology Presence of 3 or more renal cysts per kidney in patients with chronic kidney disease (CKD) who do not have hereditary cystic disease Occurs predominantly in patients on long-term dialysis (peritoneal or hemodialysis) In up to 13% of patients with CKD prior to dialysis You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If…

Complex Renal Cyst

KEY FACTS Terminology Benign, fluid-filled nonneoplastic renal lesion not meeting criteria of simple renal cyst, Bosniak classes II, IIF, and III You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Hydronephrosis

KEY FACTS Terminology Dilation of renal collecting (pelvicalyceal) system ± ureteral dilation from intrinsic or extrinsic cause Renal collecting system dilation, pelvicalyceal dilatation, pelvocaliectasis You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Urolithiasis

KEY FACTS Terminology Urinary tract stone, urinary calculous disease, nephrolithiasis, ureterolithiasis, vesicolithiasis Macroscopic concretions of crystals in urinary system, sometimes mixed with proteins You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Ureteral Ectopia

KEY FACTS Terminology Strict definition: Ureter not inserting into bladder trigone Common usage: Ureter terminating outside bladder You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Ureteral Duplication

KEY FACTS Terminology Presence of 2 separate pelvicalyceal collecting systems draining 1 kidney, which may join above bladder (partial), drain into bladder separately (complete), or beyond bladder You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here