ABSTRACT
OBJECTIVE: To determine the prevalence and distribution of inner-ear malformations in congenital single-sided deafness cases, as details of malformation type are crucial for disease prognosis and management. METHODS: A retrospective study was conducted of 90 patients aged under 16 years with congenital single-sided deafness. Radiological findings were evaluated using computed tomography and magnetic resonance imaging. Inner-ear malformations were identified and cochlear nerve status was determined in affected ears. RESULTS: Out of 90 ears, 42 (46.7 per cent) were found to have inner-ear malformation. Isolated cochlear aperture stenosis was the most common anomaly (n = 18, 20 per cent), followed by isolated cochlear aperture atresia (n = 11, 12.2 per cent) and cochlear hypoplasia (n = 7, 7.8 per cent). Cochlear nerve deficiency was encountered in 41 ears (45.6 per cent). The internal auditory canal was also stenotic in 49 ears (54.4 per cent). CONCLUSION: Inner-ear malformations, especially cochlear aperture anomalies, are involved in the aetiology of single-sided deafness more than expected. The cause of single-sided deafness differs greatly between congenital and adult-onset cases. All children with single-sided deafness should undergo radiological evaluation, as the prognosis and management, as well as the aetiology, may be significantly influenced by inner-ear malformation type.
Subject(s)
Cochlea/pathology , Deafness/etiology , Ear, Inner/abnormalities , Labyrinth Diseases/congenital , Adolescent , Child , Child, Preschool , Cochlea/abnormalities , Cochlea/innervation , Cochlear Nerve/abnormalities , Cochlear Nerve/physiopathology , Constriction, Pathologic/pathology , Deafness/diagnosis , Ear, Inner/diagnostic imaging , Ear, Inner/pathology , Female , Hearing Loss, Sensorineural/congenital , Hearing Loss, Sensorineural/diagnosis , Hearing Loss, Sensorineural/epidemiology , Humans , Infant , Labyrinth Diseases/epidemiology , Magnetic Resonance Imaging/methods , Male , Prevalence , Prognosis , Retrospective Studies , Tomography, X-Ray Computed/methods , Vestibulocochlear Nerve Diseases/congenital , Vestibulocochlear Nerve Diseases/epidemiologyABSTRACT
OBJECTIVES: The study aimed to compare measurements of coronary artery calcification (CAC) and bone mineral density (BMD) in postmenopausal women. METHODS: The CAC of the women was measured with electron beam tomography using a GE Imatron C150 XP EBT scanner. Subjects with calcium scores above 0 were classified as CAC(+); those without detectable coronary calcium were classified as CAC(-). BMD was measured by dual-energy X-ray absorptiometry (DEXA). Patients were divided into two groups, depending on the T scores of their lumbar spine, into those with normal bone and those with osteopenia-osteoporosis. RESULTS: The proportions of patients classified as CAC(+) were 20% in the normal group and 60% in the osteopenia-osteoporosis group (p = 0.037). BMD values in L1-4 were 1.13 +/- 2.29 and 0.98 +/- 2.79 g/cm(2) in the normal group and osteopenia-osteoporosis group, respectively and the mean total CAC scores were 1.34 +/- 1.2 and 69.0 +/- 20.5, respectively. The CAC scores of patients with osteopenia-osteoporosis were significantly higher compared with those of the normal group (p = 0.014). CONCLUSION: The study shows that postmenopausal women with decreased bone mineral density may have higher risk of subclinical coronary atherosclerosis.
