The only way to establish the diagnosis of cell-mediated food reactions is

Correct Answer: C

Rationale: Elimination and challenge testing is the gold standard for diagnosing cell-mediated food reactions as IgE tests are not reliable.

Correct Answer: C

Rationale: Mumps virus can cause meningoencephalitis, often presenting with headache, fever, and signs of meningeal irritation.

Correct Answer: D

Rationale: All statements are true; CNS leukemia has a poor prognosis, causes increased ICP, is prone to relapse, and can lead to cranial nerve palsies.

Correct Answer: B

Rationale: Tetralogy of Fallot is the most common cyanotic congenital heart disease, characterized by right ventricular outflow obstruction, VSD, overriding aorta, and right ventricular hypertrophy. It leads to cyanosis and may cause complications like brain abscess due to right-to-left shunting.

Correct Answer: B

Rationale: Tetralogy of Fallot is the most common cyanotic congenital heart disease, characterized by right ventricular outflow obstruction, VSD, overriding aorta, and right ventricular hypertrophy. It leads to cyanosis and may cause complications like brain abscess due to right-to-left shunting.