A child born with microcephaly, chorioretinitis and intra cranial calcifiction. Most likely diagnosis is –
## **Core Concept**
The question describes a congenital condition characterized by microcephaly, chorioretinitis, and intracranial calcification. These symptoms are indicative of a congenital infection. The most common congenital infections known to cause such symptoms are part of the TORCH complex.
## **Why the Correct Answer is Right**
The symptoms described—microcephaly (small head size), chorioretinitis (inflammation of the choroid and retina in the eye), and intracranial calcification (calcium deposits in the brain)—are classic for congenital toxoplasmosis. **Toxoplasmosis** is caused by the protozoan *Toxoplasma gondii*. When a pregnant woman acquires this infection, it can be transmitted to the fetus, leading to congenital toxoplasmosis. This condition is a part of the TORCH infections, which stand for Toxoplasmosis, Rubella, Cytomegalovirus, and Herpes simplex virus infections.
## **Why Each Wrong Option is Incorrect**
- **Option A:** While certain viral infections can cause congenital abnormalities, the specific combination of microcephaly, chorioretinitis, and intracranial calcification is more classically associated with toxoplasmosis than with the infections listed in the other options.
- **Option B:** This option might refer to another congenital infection, but without specifying, it's hard to directly refute. However, given the classic symptoms described, toxoplasmosis is a more precise match.
- **Option D:** Similar to Option B, without specifics, it's challenging to directly address. However, the symptomatology points more strongly towards toxoplasmosis.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that congenital toxoplasmosis is a significant cause of neurological and ophthalmological abnormalities in children. A classic triad for congenital toxoplasmosis includes chorioretinitis, hydrocephalus (or microcephaly), and intracranial calcifications. Remembering that TORCH infections can have overlapping symptoms but also distinct features helps in narrowing down the diagnosis.
## **Correct Answer:** C. Toxoplasmosis.