Difficult oral intubation may be associated with all except:

Oral tracheal intubation is commonly employed in the administration of general anesthesia. Difficult intubation is expected in: 1. Limited neck extension. 2. Limited temporomandibular joint range of motion. 3. Massive obesity. 4. Prominent maxillary teeth. 5. Broken or loose maxillary teeth. 6. Fragile maxillary dental work. 7. Macroglossia. 8. Tonsillar pillars not visualized. 9. Anterior larynx 10. Rheumatoid involvement of larynx 11. Airway edema. 12. Intrinsic or extrinsic pathology eg. Tumor, abscess, hematoma, or foreign body 13. Active bleeding in airway.