ABSTRACT
Hearing screening is well established in most developed countries, and the data extensively published. However, little information has been presented by the developing, nonwhite populations. A screening study was carried out on 2202 Jamaican children aged 5 to 7 years. This involved tympanometry and pure-tone audiometry (frequencies of 0.5, 1, and 2 kHz.) Failure was considered to have occurred if a type B or C curve was obtained or if the threshold of hearing was greater than 20 dB. These children were further evaluated by a full ear, nose, and throat examination, inclusive of pneumatic otoscopy, and audiologic testing. The prevalence of hearing impairment was 4.9%. Otitis media with effusion (OME) was present in 1.9%. The prevalence of OME in Jamaica is low when compared with that of the same age-group in the developed countries.
Subject(s)
Developing Countries , Hearing Disorders/epidemiology , Otitis Media with Effusion/epidemiology , Acoustic Impedance Tests , Audiometry, Pure-Tone , Child , Child, Preschool , Female , Hearing Disorders/prevention & control , Humans , Jamaica/epidemiology , Male , Mass Screening , Otitis Media with Effusion/prevention & control , PrevalenceABSTRACT
We describe the clinico-pathological features and discuss the possible pathogenetic mechanism of thyroid papillary carcinoma arising in a branchial cleft cyst. This has been described only once previously in the literature.
Subject(s)
Branchioma/complications , Carcinoma, Papillary/complications , Carcinoma, Papillary/pathology , Thyroid Gland/pathology , Thyroid Neoplasms/complications , Thyroid Neoplasms/pathology , Adult , Branchioma/ultrastructure , Carcinoma, Papillary/ultrastructure , Humans , Male , Thyroid Gland/ultrastructure , Thyroid Neoplasms/ultrastructureABSTRACT
We describe the clinico-pathological features and discuss the possible pathogenetic mechanism of thyroid papillary carcinoma arising in a branchial cleft cyst. This has been described only once previously in the literature.