Mousy odour urine is seen in-
**Core Concept**
Mousy odor urine is a clinical manifestation associated with a specific metabolic disorder. It is caused by the accumulation of a particular compound in the body, which is then excreted in the urine.
**Why the Correct Answer is Right**
The correct answer is related to the metabolism of phenylalanine, an amino acid found in many protein-rich foods. When phenylalanine is metabolized, it is converted into phenylpyruvic acid by the enzyme phenylalanine hydroxylase. In individuals with phenylketonuria (PKU), this enzyme is deficient, leading to the accumulation of phenylpyruvic acid and its metabolite, phenylacetone. Phenylacetone is responsible for the characteristic mousy odor of the urine in patients with PKU.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is not related to the metabolism of phenylalanine or the production of phenylacetone.
* **Option B:** This option is incorrect because it is not associated with the characteristic mousy odor of urine in patients with PKU.
* **Option C:** This option is incorrect because it is not directly related to the metabolism of phenylalanine or the production of phenylacetone.
**Clinical Pearl / High-Yield Fact**
Mousy odor urine is a classic clinical finding in patients with phenylketonuria (PKU), a genetic disorder that affects the metabolism of the amino acid phenylalanine. Early diagnosis and treatment of PKU are crucial to prevent intellectual disability and other complications.
**Correct Answer: C. Phenylketonuria**