Malignant external otitis: early scintigraphic detection
Pseudomonas otitis externa in elderly diabetics may extend aggressively to adjacent bone, cranial nerves, meninges, and vessels, leading to a clinical diagnosis of ''malignant'' external otitis. Early diagnosis is necessary for successful treatment. This study compares the findings of initial radiographs, thin-section tomography of temporal bone, CT scans of head and neck, technetium-99m methylene diphosphonate (MDP) and gallium-67 citrate scintigraphy, and single-photon emission computed tomography (SPECT) for detection of temporal bone osteomylitis in ten patients fulfilling the clinical diagnostic criteria of malignant external otitis. Skull radiographs were negative in all of the eight patients studied. Thin-section tomography was positive in one of the seven patients studied using this modality. CT scanning suggested osteomyelitis in three of nine patients. Both Tc-99m and Ga-67 citrate scintigraphy were positive in 10 of 10 patients. These results suggest that technetium and gallium scintigraphy are more sensitive than radiographs and CT scans for early detection of malignant external otitis.
- Research Organization:
- Mount Sinai Medical Center, New York
- OSTI ID:
- 5024360
- Journal Information:
- Radiology; (United States), Vol. 150:2
- Country of Publication:
- United States
- Language:
- English
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AUDITORY ORGANS
COMPUTERIZED TOMOGRAPHY
SCINTISCANNING
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
BACTERIAL DISEASES
DIAGNOSIS
CITRATES
DIABETES MELLITUS
GALLIUM 67
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DIAGNOSTIC TECHNIQUES
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EMISSION COMPUTED TOMOGRAPHY
ENDOCRINE DISEASES
GALLIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
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INTERMEDIATE MASS NUCLEI
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ISOTOPES
METABOLIC DISEASES
MICROORGANISMS
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ORGANIC PHOSPHORUS COMPOUNDS
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SENSE ORGANS
TECHNETIUM ISOTOPES
TOMOGRAPHY
YEARS LIVING RADIOISOTOPES
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