Hot Khat N = 22 Cold Khat N = 98
P-value
Gross examination
Laryngeal and vocal folds affection 0 (0.0) 54 (55.1) < 0.001
Deformed epiglottis 22 (100) 0 (0.0)
Oropharyngeal stenosis 17 (77.3) 0 (0.0)
Esophageal stenosis 2 (9.1) 0 (0.0)
Histopathologic examination
Chronic non-specific inflammation 15 (68.2) 0 (0.0) < 0.001
Laryngeal polyp 0 (0.0) 33 (33.7)
Did not undergo biopsy 7 (31.8) 65 (66.3)