26th April 2024

A 16-year-old boy presents with a 3-day history of fever, headache, and painful swelling of his right cheek.

A 16-year-old boy presents with a 3-day history of fever, headache, and painful swelling of his right cheek. The swelling has progressively worsened, and he now has difficulty eating. He also complains of mild pain in his testicles. On examination, there is noticeable swelling of the right parotid gland, which is tender to touch. His temperature is 38.4°C. There are no other significant findings.

Which of the following is the most likely diagnosis?