Clinical–Pathological Conference: Case 1

Abstract

A healthy 37-year-old female noticed a loose 2nd maxillary molar, which became progressively worse over several weeks. A course of antibiotics was prescribed by her dentist without improvement. She then visited an oral surgeon, and a decision to extract the tooth was taken, since all supporting bone seemed to have been lost. A panoramic radiograph showed partial opacification of the sinus floor which was interpreted as a possible sign for sinus mucocele (Fig. 1a).Immediately following extraction, an oro-antral communication was observed, with a mass of pale, soft, gelatinous tissue protruding through. A sample of the tissue was submitted for histopathological examination and CT scans were ordered. Coronal CT scans exhibited a mass occupying the right maxillary and ethmoidal sinuses, and protruding into the right nasal space and pterygomaxillary fossa. Destruction of the bony walls and septa were evident at the level of the maxillary and ethmoidal sinuses, as well as thinning of the orbital floor and erosion of the pterygoid plates (Fig. 1b).

Extraskeletal myxoid chondrosarcoma of the masticator space in a pediatric patient

“…To the best of our knowledge 33 EMC cases of the head and neck region have been reported in the literature, most of them affecting the neck, nasal cavity and intracranial cavity ( Table 1 ) ( 2 , 7 - 33 ). Only four cases affected pediatric patients, ( 9 , 20 , 25 , 29 ) with two previous cases affecting the infratemporal fossa and parapharyngeal space ( 19 , 21 ).…”