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Medicine

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Kidney

Question
16 out of 21
 

In which of the following condition there is CRF with enlarge kidney size? (DNB Dec 10)



A Chronic glomerulo nephritis

B Chronic pyelonephritis

C Hypertension

D Diabetes

Ans. D Diabetes

Investigations

1. Urine analysis – Broad cast in urine

2. Isosthenuria: A state in chronic renal disease in which the kidney cannot form urine with a higher or a

lower specific gravity than that of protein-free plasma; specific gravity of the urine becomes fixed

around 1.010, irrespective of the fluid intake.

3. Blood biochemistry

4. Ultra sonography to assess the size of kidneys.

In CRF, both the kidneys are small and contracted (< 8 cm length is taken as contracted kidney). (FAQ)

B/L contracted kidney is the surest sign of CRF. But there are few exceptions where patient may have CRF but with normal or enlarge kidney size.

Causes of CRF with enlarged kidneys (FAQ)

a. Diabetes mellitus Q b. Polycystic kidney disease Q c. Amyloid kidney Q

d. Bilateral obstruction (hydronephrosis) Q e. Myeloma kidney Q

Kidney Flashcard List

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