fongch
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An autopsy is performed on a 58-year-old man who suffered from renal impairment manifesting w/ polyuria, nocturia and diluted urine. Post-mortem examination demonstrates bilateral dilatation of the renal pelvis and calices with associated atrophy of the kidneys. Which of the following conditions is most likely to result in this pathologic change?
A. Chronic glomerulonephritis
B. Prostatic cancer
C. Renal cell carcinoma
D. Retroperitoneal fibrosis
E. Staghorn calculus
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| Cedrick
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E.-Staghorn calculus
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| robin082006
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B
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| sridevibandaru24
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E
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| fox
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symtoms of bladder outlet obstruction & obstructive hydronephrosis.....i go with robin...B. Prostatic ca
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| icemaiden
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E. dilute urine ,renal atrophy,dialated pelvis.
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| muzammil
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prostate acncer is periphirally located and will produce obstruction at a letr satge when it involves base of baldder
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| muzammil
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so y not pick d as retro peritonela fibrosis will cause ureteric obstruction but i am not sure whether it can be bilateral or not
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| fox
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whats the answer fongch?
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| PatriciaLim
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It is not prostatic cancer because that causes drilling. ( obstruction)
It is not chronic GM because that causes heamaturia and decrease urine output GRADUALLY.
RCC would cause haematuria and also bilateral is rare.
Retroperitoneal fibrosis would not involve the calices.
I would like to guess staghorn because they SAID CALICES. Staghorn involve more than 1 calyse and cause atrophy.
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| docsrinu
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but calculi are usually unilateral.
plz post the ans fong.
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| fongch
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Personally I chose E, but the answer provided by Kaplan is D.
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| new_n_lost
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the only thing which will lead to bilateral Hydronephrosis is Bladder Obstruction n the Retroperitoneal Fibrosis is way down in the list the First ans would be Prostatic Ca cos the Patient did have lower abdominal pain.
but my question is Retroperitoneal Fibrosis wud also be a late presentation of bladder obstruction so which has the most precedence the Prostatic Ca or the Retroperitoneal fibrosis
n the Chances of a Staghorn Calculi being bilateral is very rare.
here is link
http://www.whcenter.org/body.cfm?xyzpdqabc=0&...
do tell me wht u think
Fong could u plz give the explanation provided by Kaplan
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| MRMAVERICK
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VALID POINT NEW
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| Peace
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Its a Q-bank question and the answer was D! I dont understand why.
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| docsrinu
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in kaplan its mentioned BPH causes hydronephrosis. nothing is there regd prostate ca. can someone tell the source where its mentioned prostate ca causes bil hydronephrosis;
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