Pediatric Orbit Tumors and Tumorlike Lesions: Osseous Lesions of the Orbit
Many extraocular masses involving the pediatric orbit have an osseous origin. The most common is the dermoid inclusion cyst; these cystic lesions may contain lipid and are most often found near the zygomaticofrontal suture, adjacent to an indolent-appearing erosion of bone. Some primary bone lesions may involve the orbit, producing a lytic or dense […]
Imaging of acute injuries of the cervical spine: value of plain radiography, CT, and MR imaging
Imaging of injuries of the cervical spine has undergone substantial changes in the past 10 years. The use of CT and MR imaging has been emphasized by many authors. Other studies have stressed the proper use and interpretation of plain radiographs in the emergency setting. There is confusion about whether plain films, CT, or […]
Imaging of Complications of Acute Mastoiditis in Children
Acute mastoiditis is a serious complication of acute otitis media in children. Suppurative disease in the mastoid region occasionally spreads to the adjacent dura mater of the posterior and middle cranial fossae and the sigmoid sinus by means of thrombophlebitis, osseous erosion, or anatomic pathways, producing intracranial complications. Computed tomography (CT) should be performed […]
CT of the Normal Temporal Bone
http://radiology.rsna.org/content/235/1/133.full.pdf+html Lorenz Jäger, MD, Harald Bonell, MD, Martin Liebl, MD, Sudesh Srivastav, PhD, Viktor Arbusow, MD, Martin Hempel, MD and Maximilian Reiser, MD PURPOSE: To evaluate multi– and single–detector row computed tomographic (CT) depiction of anatomic landmarks of temporal bone. MATERIALS AND METHODS: Institutional review board approval and written informed consent were obtained. In 50 […]
Retinal Detachment: Imaging of Surgical Treatments and Complications
Rhegmatogenous retinal detachment occurs in 5%–7% of the population with a peak prevalence between 40 and 80 years of age. The objects of treatment are to create a chorioretinal scar at the site of the retinal tear and to mechanically appose the detached sensory retina to the underlying retinal pigment epithelium. This apposition is […]
The Radiology of Facial Fractures
It has been argued that the recognition of facial fractures depends upon detailed knowledge of the normal radiographic anatomy of the facial bones. Critical structures have, therefore, been identified in all of the conventional radiographic projections as well as in conventional and computed tomographic sections. Direct and indirect signs of fracture have been enumerated […]
Relative Value of MR Imaging as Compared with CT in the Diagnosis of Inflammatory
PURPOSE: To evaluate the relative value of magnetic resonance (MR) imaging versus computed tomography (CT) in the diagnosis of inflammatory paranasal sinus disease. MATERIALS AND METHODS: In 30 patients suspected of having or known to have inflammation of the paranasal sinuses, both coronal CT and coronal T1-weighted, three-dimensional, gradient-echo MR imaging of the paranasal […]
Gallery of Medical Devices Part 1: Orthopedic Devices for the Extremities and Pelvis
This gallery of orthopedic devices is designed as a quick reference for readers who wish to identify an unfamiliar device in the extremities or pelvis (1), specifically a device used for fracture fixation or in joint arthroplasty. The basic goal of fracture fixation is to stabilize the fractured bone, to enable fast healing of […]
Cysts and Cystic Lesions of the Mandible
Many lesions that occur in the mandible have a cystlike radiographic appearance. These lesions are often difficult to differentiate on the basis of their radiographic features alone. Mandibular lesions may be odontogenic or nonodontogenic. Among odontogenic lesions without mineralization, ameloblastomas, odontogenic keratocysts, and dentigerous cysts can all appear as well-defined, unilocular, well-corticated, lucent lesions […]
Pictorial Essay Cystic Masses of the Head and Neck
Cervical congenital cystic masses constitute an uncommon group of lesions usually diagnosed in infancy and childhood. The most common congenital neck mass is the thyroglossal duct cyst. The diagnosis is easily established from the presence of a cystic lesion in the anterior midline portion of the neck. The vast majority of branchial cleft cysts […]
