Pathology · single question
A child with lymphadenopathy, petechiae, etc. — what is the diagnosis?
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Correct answer: A. Infectious mononucleosis (EBV)
A CHILD with: LYMPHADENOPATHY (swollen lymph nodes) + PETECHIAE (pinpoint hemorrhages — on palate in mono) + pharyngitis + fever + fatigue = INFECTIOUS MONONUCLEOSIS (Epstein-Barr Virus / EBV). This is the classic presentation. The Monospot test (heterophile antibody) confirms it. Petechiae on soft palate are classic for mono. Lymphadenopathy is typically posterior cervical. The combination is pathognomonic for EBV mononucleosis. A is correct.