Social & Preventive Medicine A patient with clustered, white lesions on the buccal mucosa (opposite the upper 1st & 2nd molars) pathognomonic for measles. These are:- A Leukoplakia B Koplik spots C Kaposi spots D None 💡 Explanation A patient with clustered, white lesions on the buccal mucosa (opposite the upper 1st & 2nd molars) pathognomonic for measles. These are:- ✓ Correct Answer: B. Koplik spots