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Biomedical subjects

R A Holliday

Publications and source records attributed to R A Holliday.

25 records · Page 2Linked to original sources
PubMed1989

Inflammatory diseases of the temporal bone: evaluation with CT and MR.

Contrast enhanced CT and MR are complementary studies in evaluating inflammatory disease of the temporal bone. CT should be performed in preference to MR as the initial examination because of its ability to detect and delineate both soft tissue and bony abnormalities. CT should always be performed if intratympanic pathology is suspected, even if the MR examination is normal. MR can be used to distinguish effusion and cholesterol granuloma from other soft tissue masses in the tympanic cavity. Noncontrast MR cannot differentiate between cholesteatoma and granulation tissue. The efficacy of gadolinium-DTPA in inflammatory disease of the temporal bone awaits further investigation.

Cholesteatoma↗
PubMed1988

Benign lymphoepithelial parotid cysts and hyperplastic cervical adenopathy in AIDS-risk patients: a new CT appearance.

The contrast material-enhanced computed tomographic (CT) scans of 18 patients at risk for acquired immunodeficiency syndrome (AIDS) who had painless facial swelling were reviewed. All scans demonstrated parotid cysts and diffuse homogeneous cervical adenopathy. The cysts were bilateral in all but three cases. Eleven of 13 patients tested had antibodies to the human immunodeficiency virus (HIV), and two of the five untested patients later developed AIDS. The authors believe that the CT findings of multiple parotid cysts and cervical adenopathy suggest that the patient may be infected with the HIV virus, and the radiologist should alert the referring physician so that appropriate precautions and treatment may be initiated.

AIDS-Related Complex↗
PubMedDate not supplied

Evaluation of the frontonasal duct in frontal sinus fractures.

Successful management of frontal sinus fractures depends on correct identification of structural pathology, which may lead to inflammatory complications. Obstruction of the frontonasal duct is a significant factor predisposing to such complications and its evaluation is thus critical in the management of these fractures. Specific radiographic CT criteria and an intraoperative dye irrigation test are presented to determine the likelihood of frontonasal duct injury. Eighteen cases of frontal sinus fractures are reviewed, which have been treated based on these principles. A scheme is presented outlining the management of frontal sinus trauma using these methods.

Frontal Sinus↗
PubMedDate not supplied

CT diagnosis of pyriform sinus perforation.

Computed tomography is currently used as an adjunct to oral contrast studies in the diagnosis and management of esophageal and posterior pharyngeal perforation. We present the CT findings of a surgically proven iatrogenic pyriform sinus perforation. Although extravasation of contrast material was depicted by pharyngography, the site of perforation could not be demonstrated. Knowledge of the pattern of spread of pharyngeal neoplasms was essential for correct interpretation of CT. In our patient the perforation was caused by traumatic passage of an Ewald tube, an unusual and previously unreported complication.

Adult↗
PubMedDate not supplied

Levator scapulae muscle asymmetry presenting as a palpable neck mass: CT evaluation.

PURPOSE: To define the normal CT anatomy of the levator scapulae muscle and to report on a series of five patients who presented with a palpable mass in the posterior triangle due to asymmetry of the levator scapulae muscles. PATIENTS AND METHODS: The contrast-enhanced CT examinations of the neck in 25 patients without palpable masses were reviewed to establish the normal CT appearance of the levator scapulae muscle. We retrospectively reviewed the contrast-enhanced CT examinations of the neck in five patients who presented with a palpable mass secondary to asymmetric levator scapulae muscles. RESULTS: In three patients who had undergone unilateral radical neck dissection, hypertrophy of the ipsilateral levator scapulae muscle was found. In one patient, the normal levator scapulae muscle produced a factitious "mass" due to atrophy of the contralateral levator scapulae muscle. One patient had an intramuscular neoplasm of the levator scapulae. CONCLUSION: Asymmetry of the levator scapulae muscles, an unusual cause of a posterior triangle mass, can be diagnosed using CT.

Adult↗