Radiology Key

KEY FACTS Terminology • Solid epithelial neoplasm from ductal epithelium of exocrine pancreas Imaging • US often 1st-line imaging to evaluate obstructive jaundice and level of obstruction ○ Not as…

KEY FACTS Imaging • Color, power, spectral Doppler US is screening modality for transplant renal artery stenosis • Stenosis occurs most commonly at arterial anastomosis but can occur along length…

KEY FACTS Terminology • Occlusion of transplant renal artery secondary to thrombus Imaging • Edematous hypoechoic kidney if total thrombosis • Absence of blood flow in main renal artery •…

KEY FACTS Terminology • Clot formation in renal vein Imaging • Unilateral > bilateral • Kidney enlarged acutely in 75% cases • Renal vein dilated acutely • Possible inferior vena…

KEY FACTS Terminology • Abnormal accumulation of fluid within peritoneal cavity Imaging • Free-flowing fluid insinuates itself between organs & is shaped by surrounding structures • Fluid collects in most…

KEY FACTS Imaging • Usually small and round, may be wedge-shaped • Usually cortical; rarely disrupting renal contour or capsule ○ Large, exophytic metastases may be encountered • Hypoechoic, hyperechoic,…

KEY FACTS Terminology • Testicular microlithiasis (TML): Presence of 5 or more microliths or microcalcifications in whole testis or 5 or more microliths per field of view • Limited TML:…

KEY FACTS Terminology • Infiltrative neoplasm of testis in which tumor cells surround and compress seminiferous tubules and normal testicular vessels Imaging • Bilateral, solid, hypoechoic, hypervascular nodules/masses • Diffuse…

KEY FACTS Terminology • Chronic renal inflammation usually associated with longstanding urinary calculus obstruction (75%) • Renal parenchyma is gradually replaced by lipid-laden macrophages • Diffuse (> 80%) and focal…

KEY FACTS Imaging • US for initial detection and characterization, CECT or MR for preoperative assessment and staging • 3 main morphological types ○ Large soft tissue mass infiltrating gallbladder…