Other than koplik spots, pathognomonic of measles is:
Warthin ﬁnkeldey giant cells: Found in lymphoid organs lungs and sputum and have eosinophilic nuclear and cytoplasmic inclusion bodies. These are pathognomic of measles
Ref: Shafer's textbook of oral pathology 7th edition page 348
Warthin ﬁnkeldey giant cells
Torres bodies
Negri bodies
All of the above