Laryngeal granulomas are benign lesions located in the posterior third of the glottis, mainly at the level of the vocal apophysis of the arytenoid cartilage. They are typically associated with three etiological factors: endotracheal intubation, inappropriate voice use and/or gastroesophageal reflux. The formation of a post-intubation laryngeal granuloma is a late complication related to intubation injury. It is uncommon in the child, especially if the period of intubation is short. It is usually unilateral and produces dysphonia, pharyngeal foreign body sensation and cough. Treatment consists of surgical removal when the lesion is pediculated or causes respiratory compromise. We present a 14-year-old girl who developed a pediculated laryngeal granuloma after orotracheal intubation of less than 24 hours, which was evidenced 3 months after cardiac surgery. We describe the pathogenesis, clinical manifestations, diagnosis and treatment of this pathology.