GU BLOCK II Flashcards
What is the criteria for a benign cyst on US
Echo free (anechoic)
Sharply demarcated mass w/ smooth walls
Enhanced back wall → indicating good transmission through the cyst
What is the criteria for a benign cyst on CT
Smooth thin wall that is sharply demarcated
No enhancement w/ contrast media
If lesion is inconsistent w/ a simple cyst on CT what is the next step
Surgical exploration
What is the standard of care for a benign cyst
CT non con
And periodic evaluation
What is the most common inherited kidney Dz
Polycystic Kidney Dz
What is the presentation for a patient with PKD
Age 20-40
Abdominal or Flank Pain
Hematuria
(Microscopic or Gross)
Mild-Moderate Proteinuria
Family History (75%)!!! Hypertension (50%)!!!
Low urinary pH
Recurrent UTI or Nephrolithiasis
How do you Dx PKD
Ultrasound
Diagnostic in patient with positive family history and renomegaly in the 3rd or 4th decade of life.
Negative US is less accurate in ruling out disease in patients younger than 30 years so CT or MRI is recommended!!!
What is the treatment for pain in PKD
Bed rest, analgesics (non-NSAID), cyst decompression, avoid long-term use of analgesics, tricyclic antidepressants for chronic pain.
What is the Tx for hematuria in PKD
bed rest & hydration
If persistent → consider renal cell carcinoma (esp., men >50yo)
If a pt has persistent hematuria with PKD think
If persistent → consider renal cell carcinoma (esp., men >50yo)
What is the treatment for renal infection in PKD
Antibiotics that will penetrate cystic wall
(may require up to 2 weeks of IV antibiotics)
What is the treatment for nephrolithiasis
Hydration and pain control
What pregnancy problem is increased in a pt with PKD
ectopic pregnancy
A pt presents with abdominal flank and back pain
Hematuria
HTN
And has cerebral aneurysms
Think
PKD
A pt presents with Swiss cheese appearance of the kidney
Think
Medullary cyst
MEDULLARY SPONGE DZ
How does medullary sponge kidney present
Hematuria
(gross or microscopic)
Recurrent UTIs
Nephrolithiasis
UA may show High urine PH and HyperCa2+
What do you need to Dx Medullary Sponge Kidney
CT scan: shows cystic dilatation of DCT, a striated appearance in this area, & calcifications in renal collecting system.
How does Medullary sponge Kidney Show on IVP
Bouquet of flowers/ paintbrush appearance
What is the Tx for sponge Kidney
Treatment directed toward complications:
-Pyelonephritis/UTI
- Renal calculi → ↑ fluids (2 L/day) to prevent stone formation
- If hypercalciuria → thiazide diuretics to ↓ calcium excretion
- If renal tubular acidosis → alkali therapy
What is the population that gets acquired renal cystic Dz
Largely confined to the ESRD population on dialysis.
What is the most signifigant complication of Aquired Renal cystic Dz
Most significant complication is the malignant conversion of cysts into renal cell carcinoma.
What is the Dx for Acquired Renal Cystic Dz
Made by ultrasonography or CT demonstrating multiple and bilateral renal cysts in patients with CKD or ESRD, and there is NO family history PKD.
Renal CT or MRI is preferable to assess for malignant conversion.
CT with or without Con
What is nephronophthisis
Is characterized pathologically by renal interstitial fibrosis, tubular atrophy with basement membrane thickening and disruption.
Kidney size is generally normal or reduced.
Typically a PEDIATRIC problem!
An infant presents with polyuria, pallor, growth failure and lethagy
Think what kidney problem
Nephronophthisis