Gynaecology & Obstetrics Koilocytes with dyskeratosis and perinuclear halo on pap smear is pathognomonic of which of the following? A HPV infection B Metaplasia C Dysplasia D Bacterial vaginosis 💡 Explanation Koilocytes with dyskeratosis and perinuclear halo on pap smear is pathognomonic of which of the following? ✓ Correct Answer: A. HPV infection