Cholesteatomas of the temporal bone: role of computed tomography.

Computed tomography (CT) of the temporal bone was performed in 64 patients thought to have a cholesteatoma of the middle ear. Twenty had not had surgery before, while 44 had been operated on; special consideration was given to 21 patients who were scanned immediately before a second operation and had confirmation of the CT findings. Inflammatory disease without cholesteatoma was characterized by absence of erosion of the otic capsule or ossicular chain.

Work in progress: NMR anatomy of the larynx and tongue base.

The normal anatomy of the larynx and base of the tongue as seen on nuclear magnetic resonance (NMR) images was studied. Scans of normal volunteers were obtained using a 3.5 kilogauss (0.

High resolution CT scanning for detection of cholesteatoma and complications in the postoperative ear.

Otologists who prefer intact canal wall surgery for removal of cholesteatoma recognize a 12.25% return rate. Revisions often indicated to correct hearing loss are frequently negative for recurrent cholesteatoma.

Low-cost digital teleradiology systems.

The proliferation of digital imaging methods creates a need for systems that facilitate storage and retrieval of these images. Several low-cost systems with the capability to store, retrieve, and transmit digital images from the medical center to distant general-purpose desktop microcomputers over standard telephone lines were investigated. Using error checking and nonlinear gray scales, both bistable and gray scale display systems were able to transmit and reproduce diagnostic quality images.

Comparison of computed tomography and pluridirectional tomography of the temporal bone.

During pluridirectional tomography dense bone creates ghost shadows that simulate chronic disease and soft-tissue masses within the middle ear cavity. This effect was demonstrated in three dried skulls. Cholesteatomas were simulated in three more temporal bones with a mixture of 2% iodine in paraffin.

Atypical Pneumocystis carinii pneumonia in homosexual men with unusual immunodeficiency.

Pneumocystis carinii pneumonia is a well known opportunistic infection whose radiographic presentation and association with cytomegalovirus (CMV) have been well described. Recently nine young homosexual men with chronic flulike illnesses were seen. Bronchoscopy in six cases demonstrated evidence of CMW infection with Pneumocystis pneumonia.