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Biomedical subjects

L F Rogers

Publications and source records attributed to L F Rogers.

At least 109 records · Page 6Linked to original sources
PubMed1983

The dural lucent line: characteristic sign of hyperostosing meningioma en plaque.

Hyperostosis of the skull associated with en plaque form of meningioma may present a diagnostic challenge, since the intracranial part of the tumor is not visualized by skull radiography, computed tomography (CT), or other neuroradiologic methods. The authors report four cases of hyperostosing meningioma en plaque demonstrating a characteristic feature: a subdural layer of ossification along the hyperostotic bone with a dural lucent interface. Polytomography or high-resolution CT at bone window settings is necessary to identify the dural lucent line. The absence of this sign does not exclude meningioma en plaque.

Adult↗
PubMed1982

Reappraisal of contrast media used to detect upper gastrointestinal perforations: comparison of ionic water-soluble media with barium sulfate.

Iodinated water-soluble compounds have been widely recommended as the most suitable contrast media for diagnosis of gastrointestinal perforations. However, the authors present 6 cases in which mucosal tears and transmural perforations of the upper gastrointestinal tract were either unrecognizable or inadequately shown during initial evaluation with methylglucamine diatrizoate. Re-examination with barium sulfate demonstrated the precise location and extent of the perforations. Reasons for the higher diagnostic yield of barium studies are explained on the basis of experimental and clinical observations.

Adult↗
PubMed1982

Injuries of the distal tibial epiphysis: systematic radiographic evaluation.

The site of injury to the distal tibial epiphysis in the younger individual depends on the relation of the ligaments to the epiphysis, the type of injury, and the maturity and degree of closure of the growth plate. A characteristic radiographic pattern of injury occurs as a result of each particular injuring force, which in turn requires a specific mode of fracture reduction. One hundred and ninety-four cases of epiphyseal injuries were reviewed, and the incidence and diagnostic characteristics of the various types are presented. The Salter-Harris classification of lesions reveal the type II is the most common (46.4%), followed by type III (25.2%), type IV (10.3%), and type I (5.7%). The triplane fracture constituted 9.8%, and miscellaneous injuries, which could not be classified, were 2.6%.

Adolescent↗
PubMed1982

Triangular cervical vertebral body fractures: diagnostic significance.

A common feature of many fractures of the cervical spine is a triangular fragment broken from some part of the vertebral body. The radiographs of 109 patients with cervical spine fractures having a triangular vertebral body fragment were reviewed. Thirteen patients had two triangular fragments, a total of 122 triangular fragments. Eighty-eight (72%) fractures involved the anterior-inferior corner of the vertebral body. Other triangular fractures occurred in anterior-superior (16%), posterior-inferior (11%), and posterior-superior (1%) corners. The position and origin of these fragments are related to the mechanism of fracture. Complete radiographic assessment including tomography and CT revealed that these triangular corner fractures had other associated injuries of the body and of the posterior elements, characteristic of each particular form of triangular fragment. A knowledge of these patterns of injury guides the radiographic evaluation when a triangular fracture is identified on the initial lateral radiograph. A systematic approach to the evaluation of cervical spine fractures based on these triangular fragments is suggested.

Adolescent↗
PubMed1982

Sagittal fracture of the cervical vertebral body.

The sagittal fracture of the cervical vertebral body is an uncommon injury producing the paradoxic situation of profound quadriplegia with either normal or minimal radiographic findings and may be overlooked if polytomography or computed tomography (CT) is not performed. The sagittal fracture was the sole fracture of the vertebral body in seven cases encountered in a review of 270 consecutive cervical fractures, and was readily apparent on routine anteroposterior radiographs in two cases, suspected in two cases, but clearly demonstrated in all cases by polytomography or CT. Most (five of seven) occurred with multiple levels of sagittal fractures in which only one case was apparent on routine radiographs. Posterior ring fractures at the lamina or pedicle were commonly present (six of seven), but detected by plain radiographs in only two cases. The sagittal fracture is frequently a component of the teardrop fracture, occurring in 44% (51/116) of teardrop fractures that were additionally reviewed. The plain radiographic findings are emphasized, since they provide the initial clues as to the presence of this injury. Computed tomography and polytomography either confirmed the presence of or detected additional sagittal fractures, as well as determined the presence of frequently associated arch fractures, and should be used if the plain film findings are uncertain, especially if there is quadriplegia present.

Adolescent↗
PubMed1982

Radiographic findings of infectious proctitis in homosexual men.

Homosexual men are known to have an increased incidence of sexually transmitted proctitis. A knowledge of the pathogenesis and the radiographic appearance of these processes has resulted in earlier diagnosis and more rapid institution of appropriate therapy. While gonococcus (Neisseria gonorrhoeae) and lymphogranuloma venereum (usually Chlamydia) have long been considered the common etiologies of proctitis in this population, other organisms, such as herpes, Mycoplasma, and Entamoeba have been implicated and could give an identical radiographic and clinical pattern. Diffuse narrowing and ulceration limited to the rectum was seen in five affected homosexual men recently studied at Northwestern Memorial Hospital, Chicago.

Adolescent↗
PubMed1982

Evaluation of a new mobile automatic exposure control device.

Mobile chest radiographs obtained with manual technique and with an automatic exposure control device were compared in 50 patients requiring three radiographs within a 48 hr period. Parameters evaluated were overall quality, internal consistency, film latitude, lung field (consistency and quality), cardiac contour, hilar anatomy, pulmonary vascularity, mediastinum, tracheobronchial tree, and tubes and appliances. Radiographs obtained with the automatic exposure control system demonstrated better overall quality, consistency, film latitude, and lung field consistency and quality than manual technique. There was no definite advantage of the automatic exposure control device in the visualization of the hila, pulmonary vascularity, heart, or mediastinum. Tubes and appliances were seen equally well with both techniques. The automatic exposure control device has the potential to increase the quality and consistency of mobile radiographs, particularly in those critically ill patients who are radiographed at least on a daily basis.

Adult↗
PubMed1980

Common calcaneal avulsion fracture.

An avulsion fracture on the dorsolateral aspect of the calcaneus at the origin of the extensor digitorum brevis muscle was identified after inversion injuries of the ankle. The avulsion occurred in 10% of emergency room patients with clinically suspected ankle fractures. The routine dorsoplantar view of the foot and/or the routine anteroposterior view of the ankle demonstrated the fracture. The fracture is most often confused with the os peroneum, or with the fracture of the anterior process of the calcaneus. Treatment is conservative with elevation, supportive bandage, and early activity.

Adolescent↗
PubMed1980

Acute injuries of the upper thoracic spine associated with paraplegia.

A review of 35 cases of acute injury of the upper thoracic spine associated with paraplegia was done. In 32, a fracture-dislocation was present; in two, there was a dislocation without associated fracture; and in one, neither fracture nor dislocation was identified. A total of 22 cases conformed to a pattern of injury consisting of anterior fracture dislocation with disruption of the intervening facets joints and various vertebral body fractures. Tomography was necessary for characterizationof the injuries. There was a 17% incidence of associated second level spinal injuries, usually a hyperextension injury of the cervical spine.

Adolescent↗
PubMed1980

Osseous manifestations of elbow stress associated with sports activities.

The radiographic manifestations of musculoskeletal stress at the elbow associated with racket and throwing sports are reported in 29 symptomatic amateur, juvenile, and professional athletes. Five major categories of stress are identified: diffuse, humeral shaft, medial tension, lateral compression, and extension stress. The osseous changes produced by these stresses include bony hypertrophy, loose bodies, traction spur formation, osteochondral and humeral shaft fractures in the adult, and epiphyseal and apophyseal hypermaturity or avulsion in the youngster.

Adolescent↗
PubMed1980

Fracture-separation of the distal humeral epiphysis.

Sixteen patients were seen with fracture-separation of the distal humeral epiphysis. The difficulty that may be encountered in making the diagnosis is thought to be partly responsible for the relative paucity of previous reports of this condition. All sixteen patients revealed posteromedial displacement of the distal humeral epiphysis on the initial roentgenogram. Child-abuse was documented or suspected as a cause in six of the sixteen fractures. Treatment consisted of closed reduction and immobilization with the elbow in 90 degrees of flexion and the forearm pronated, for three weeks. Post-injury cubitus varus, which developed in three patients and was thought to be due to inadequate reduction, did not progress.

Child↗
PubMed1978

The spectrum of radiologic findings in allergic bronchopulmonary aspergillosis.

Early diagnosis of allergic bronchopulmonary aspergillosis (ABPA) is important. Initiation of corticosteroid therapy in ABPA is essential to prevent progressive destruction of lung parenchyma. The earliest radiographic manifestations of the disease may be present only on bronchograms. In addition to the classic radiographic findings (infiltrate, massive homogeneous consolidation, tram-line shadow, parallel line shadow, ring shadow, toothpaste shadow, glove-finger shadow), perihilar infiltrates simulating adenopathy (pseudohilar adenopathy) and air fluid levels were frequently demonstrated.

Adolescent↗
PubMed1978

Plastic bowing, torus and greenstick supracondylar fractures of the humerus: radiographic clues to obscure fractures of the elbow in children.

The anterior humeral line is a valuable aid in the search for supracondylar fractures in children. When it is abnormal other signs of fracture should be carefully sought. The AHL was normal in only 5.8% of the cases reviewed (4 of 68 cases). There was other evidence of fracture in each case. Comparison of the AHLs on both sides is helpful when the AHL is normal since it may disclose subtle displacement of the line on the affected side. In children younger than 2 1/2 years the AHL may pass through the anterior third of the capitellum due to the small size of the ossification center; in these patients comparison with the opposite side may also be helpful.

Child↗
PubMed1978

Osteochondral fractures: mechanisms of injury and fate of fragments.

Osteochondral fractures, although relatively common, are frequently misdiagnosed by both clinicians and radiologists. In many of these cases positive radiographic findings are present although subtle. This paper reviews the mechanisms of injury by which osteochondral fractures occur and discusses the radiographic features of such fractures. An analysis of 43 surgical cases of osteochondral fractures in different sites was undertaken with respect to the radiographic, surgical, and histopathologic findings. Fragments consisting of cartilage alone or cartilage and bone were analyzed in terms of their radiographic features acutely and chronically after the trauma. The pathologic changes occurring within the original fragments are differentiated from those of surface growth in the older loose bodies. Attached fragments react differently than loose fragments. Typical cases from the knee joint are illustrated.

Adolescent↗
PubMed1978

Multiple level spinal injuries: importance of early recognition.

Patients with severe trauma may simultaneously sustain more than one level of spinal injury. Often, the second or third levels of injury are not recognized early enough to prevent clinically significant extension of the neurologic deficit, pain pattern, spinal instability, and/or deformity. A review of 710 spinal injury patients admitted to the Midwest Regional Spinal Cord Injury Care System yielded 4.5% multiple noncontiguous vertebral injuries. Thirty cases were studied in respect to location and type of primary and secondary injury. Of the secondary lesions, 40% occurred above and 60% below the primary lesion. In half of the patients, there was a mean of 52.6 days delay in diagnosis of the secondary lesion. Three major patterns of injury emerged from this analysis. Knowledge of these patterns and careful total spine radiography in patients with severe trauma may be a significant aid in early recognition of multiple level injuries and possible prevention of their complication.

Adolescent↗