Computed tomography in the investigation of bilateral mandibular coronoid hyperplasia

Abstract

Bilateral mandibular coronoid hyperplasia is characterized by restricted mouth opening due to impingement of the coronoid processes on the zygomatic arches. The condition is unfamiliar to many clinicians and may be significantly under-reported. The presented case highlights the benefits of computed tomography (CT) in the diagnosis and surgical evaluation of this disorder.

The hypothetical role of congenital hypotonia in the development of early coronoid hyperplasia

“…CT provides detailed visualization of the coronoid process enlargement and may show the precise location of impingement in the open-mouth position (Gibbons, 1995;Munk and Helms, 1989). Although 3D CT reconstructions require higher radiation doses, they are very representative and offer invaluable information for surgical planning.…”

Coronoid impingement syndrome: literature review and clinical management

“…Diagnosis can be made with panoramic radiographs [9, 10] and three-dimensional computerized tomography (CT) scans [5, 10, 14, 15]. Open mouth CT scans are useful for demonstrating direct impingement of the coronoid process on the zygoma [15].…”

Bilateral elongated mandibular coronoid process in an Anatolian skull

“…In this condition, coronoid process consists of histologically normal bone [ 6 ]. It leads to impingement of the coronoid process on the body or arch of the zygomatic bone on opening of the mouth [ 5 7 ].…”