Renal Pathology Ultrasound Quiz
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Questions and Answers

What is a common sonographic appearance of renal calculi?

  • Hyperechoic with posterior shadowing (correct)
  • Hypoechoic with anterior enhancement
  • Isoechoic with comet tail artifact
  • Hyperechoic with dirty shadowing
  • What is a characteristic feature of a staghorn calculus?

  • Smooth and well-defined borders
  • Presence of comet tail artifact
  • Occupies most of the collecting system (correct)
  • Hypoechoic with internal mobile debris
  • What is a common composition of an angiomylipoma?

  • Adipose tissue, smooth muscle cells, blood vessels (correct)
  • Epithelial cells and glandular tissue
  • Fibrous tissue, cartilage, and bone
  • Calcified nodules and cystic areas
  • Study Notes

    Renal Pathology

    • Terminology related to urinary tract pathology includes: Haematuria, Polyuria, Oliguria, Anuria, Hesitancy/poor stream, Dysuria, Proteinuria, and Glomerular filtration rate (GFR)
    • Renal obstruction, renal infection, parenchymal disease, renal tumors, and trauma are common renal pathologies

    Simple Renal Cysts

    • Most common renal mass, incidence increases with age (rare < 30 yrs, common > 60 yrs, 33% benign)
    • Epithelial lined and fluid filled, solitary or multiple, usually asymptomatic
    • Ultrasound criteria: Anechoic, Round or ovoid, Thin, smooth, well-defined wall, Posterior enhancement
    • Location: Cortical (within the cortex of the kidney), Exophytic (extending from the surface of the kidney), Parapelvic (within the renal sinus, may mimic hydronephrosis or extra-renal pelvis)

    Complex Renal Cysts

    • Not meeting simple cyst criteria, may contain internal echoes, septations, calcifications, thickened/irregular walls, and mural nodules
    • CT may be needed to determine if benign or malignant

    Polycystic Disease (ADPKD)

    • Autosomal dominant, most common hereditary renal disorder
    • Develops around 30-40 years old, increasing cyst size and number, correlating with decline in renal function
    • Diagnosis: Positive family history, increasing cyst volume and number
    • May present with pain, haematuria, hypertension, UTI, renal failure (50% by 60), liver cysts (30-60%), pancreatic cysts (10%), and splenic cysts (5%)
    • Ultrasound appearance: Grossly enlarged kidneys, innumerable, bilateral, asymmetrical cysts, disrupted parenchyma

    Hydronephrosis

    • Dilatation of the renal collecting system (pelvis and calyces) due to obstruction of urine outflow
    • Causes: Calculi, urinary retention, masses, enlarged prostate, scarring/post-infection, neurogenic bladder, vesicoureteric reflux
    • Ultrasound appearance: Dilatation of pelvicalyceal system, thinning of parenchyma with acute obstruction, atrophy with long-standing severe obstruction

    Renal Calculi

    • Affects approximately 12% of the population, increasing incidence with age
    • Calcium oxalate most common (60-80%), may cause haematuria, flank pain or infection
    • Usually located in the collecting system, single or multiple
    • Common areas of narrowing in the ureter where stones may become lodged: PUJ, ureter crosses iliac vessels, VUJ
    • Bladder Calculi: Caused by renal stone migration, usually asymptomatic, may cause bladder pain, haematuria

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    Description

    Test your knowledge of renal pathology in ultrasound imaging with this quiz. Covering topics from lecture 10 of the FRD3061 Medical Imaging Science and Methods 2Ultrasound 1 course, this quiz will help you review and reinforce your understanding of renal ultrasound imaging and related pathologies.

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