KROK 1 2011 – Question 29 · KROK (Medicine) · Biological Chemistry
Urine analysis of a 12-year-old boy reveals high concentration of all aliphatic amino acids with the highest excretion of cystine and cysteine. US of kidneys revealed kidney concrements. What is the most likely pathology?
- A. Cystinuria
- B. Alkaptonuria
- C. Phenylketonuria
- D. Cystitis
- E. Hartnup disease
Hint
Notice that a whole group of amino acids is lost together, and ask whether this fits one enzyme block or a shared renal handling problem, and which of them can form stones.
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