To evaluate the utility of three-dimensional (3D) reconstruction when planning the surgical treatment of nasal bone fractures. The axial scan of high-resolution facial bone CT was reconstructed in 3D using the program V-works 4.0 (CyberMed, Seoul, Korea) with a volume and surface rendering technique. For detailed stereoscopic examination of the nasal valve area, an air-bone view with the volume rendering technique was obtained using thresholds for air, cartilage, and bone. In most nasal bone fractures, 2D and 3D CT had similar detection rates. However, to determine the fracture angle and dimpled area, and identify multiple fractures, surgeons can get better information to help with the reduction of the fractured bone from 3D reconstruction images. Additionally, with a septal deformity, this view helps in deciding on the need for septal surgery during nasal reduction. The air view of the nasal passage provides clues to obstruction of the nasal cavity. We could identify the contour and location of the fracture site accurately from 3D CT images. The detection rate of fractures was similar to that of 2D CT. However, 3D CT enabled the accurate determination of the distance and direction of the fractured bony fragment from normal bone structure. Additionally, a stereoscopic image of the fracture site facilitated an understanding of the location and range of reduction. The air-bone view gave more information about the pathological obstruction of the nasal air passage.
Paget's disease is a localized bone disorder that affects widespread areas of skeleton characterized by increased bone remodeling. It is a chronic, progressive disease of unknown etiology. The pathologic process is initiated by hyperactive osteoclastic bone resorption followed by a compensatory increase in the osteoblastic new bone formation. New pagetic bones are disorganized and more susceptible to deformities and fractures. Paget's disease can affect one or multiple bones in the systemic skeleton, including the temporal bone. We experienced a case of chronic otitis media combined with an external auditory canal stenosis due to Paget's disease of the temporal bone. We report clinicopathologic features of this rare case.
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