Aim To evaluate the impact of mandibular advancement by distraction osteogenesis on the oropharyngeal airway in adult patients with retroglossal airway obstruction using two different techniques of mandibular distraction. Materials And Methods 13 adult patients with mandibular hypoplasia secondary to TMJ ankylosis with OSAS and radiographic, CT and polysomnographic evidence of OSAS were included in the study. MDO was performed (corpus distraction in 8 cases and morphometric distraction in 5 patients). Post-operatively the patients were followed up by radiographs, CT and polysomnography after 1 month and 6 months. Results There was an increase in the linear dimension of mandible by 11.07 mm, the volume by 19.3% and a decrease in AHI from 44.8 to 13.2. Conclusion Mandibular distraction (corpus and orthomorphic-equivocal results) is an effective method of relieving the retroglossal airway obstruction in adult patients with OSAS.

Primitive neuroectodermal tumor (PNET) is a high grade malignant neoplasm of small round cell tumor family, commonly affecting children and young adults. Peripheral primitive neuroectodermal tumor (pPNET) is a predominately neural, nonepithelial malignancy seen outside the nervous system that can arise in any place throughout the body including the diverse tissues of the head and neck. The diagnosis of PNET is confounded by its clinical and histopathological similarity to Ewing's sarcoma of the bone and has seldom been reported in the literature. The paucity of literature pertaining to the successful diagnosis and management of this lesion mandates its documentation and discussion. This article describes a case of an 11-year-old boy with an aggressive pPNET of the mandible. The clinical and radiographic presentations of this rare entity along with a detailed review on the current management modalities have been discussed.