Mild hoarseness with stridor is seen in:
(b) Bilateral abductor palsy(Ref. Current Diagnosis & Treatment Otolaryngology, Lalwani, 3rd ed., 478)Laryngomalacia and tracheal stenosis do not affect the VC hence voice remain normal in these though stridor is present.
Unilateral abductor palsy
Bilateral abductor palsy
Laryngomalacia
Tracheal stenosis
Larynx