Lecture 20 - Carcinoma Of The Kidney And Bladder Flashcards
What are the 2 main types of malignancy of the urinary tract?
Renal cell carcinoma
Urothelial cell carcinoma
What part of the urinary tract does Renal Cell Carcinoma affect?
The parenchyma of the kidney (the functional cells)
What is considered the parenchyma of the kidney?
Cortex
Medulla
What part of the urinary system are urothelial cell carcinomas found?
Collecting system
From the calyces to the bladder
What embryological structure does the collecting system form from?
Ureteric bud
What 2 structures dont interact in embryological development leading to renal agenesis?
Ureteric bud and metanephric blastema
Which cancer is more common, renal cell carcinoma or urothelial cell carcinoma?
Renal cell carcinoma (90%)
What type of epithelium does Renal Cell Carcinoma arise from?
Tubular epithelium
Why is the prognosis of renal cell carcinoma poor?
Most patients who present are in late stage where they already have metastatic disease
What are the risk factors of renal cell carcinoma?
SMOKING
Dialysis
Diabetes
Men more common than women
What route would a tumour take to spread to the right atrium in a renal cell carcinoma?
Renal vein
Inferior vena cava
Right atrium
What is the most common age for renal cell carcinoma?
60-70
Rare in kids since takes long time to develop
How does Renal Cell Carcinoma present?
HAEMATURIA
Fatigue
Weight loss
Fever
Mass in loin
Large Varicocele
Why can some patients with renal cell carcinoma present with Hypercalcaemia?
Cancer can secrete hormone like substance like PTH-rP (PTH related peptide)
Why can patients with a Renal Cell Carcinoma present with a large varicocele?
Left testicular vein drains into the left renal vein which then drains into the IVC
If tumour grows across the left renal vein it impairs the drainage of the testicular veins into the IVC leading to back flow of venous blood into left testicular vein increasing hydrostatic pressure leading to the bag of worms appearance
What investigations are done for renal cell carcinoma?
Ultrasound or CT
Flexible cystoscope
Cytology of urine (cells)