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한재준,홍기숙 이화여자대학교 의과학연구소 2012 EMJ (Ewha medical journal) Vol.35 No.1
The incidence of thyroid cancer has been rapidly increased in Korea. Although fine needle aspiration cytology is recommended for diagnosis of cancer, there are some limitations. Patients with indeterminate or suspicious cytology category in which malignancy cannot be ruled out usually undergone a thyroidectomy, however, only 10∼25% of them finally diagnosed as cancer. According to the progress in understanding molecular mechanism, some mutations or other molecular alterations have been studied for the diagnostic and prognostic markers for thyroid cancer. The majority of papillary thyroid cancers have BRAF and RAS mutations or RET/PTC rearrangement, and approximately 80% of follicular thyroid cancers harbor a RAS mutation or PAX8/PPARg rearrangement. These genetic alterations are mostly studied and current clinical guidelines suggested that these molecular markers may help management for patients with indeterminate cytology. In addition, recent studies demonstrated the high sensitivity and specificity of thyroid-stimulating hormone receptor mRNA in diagnosing cancer in patients with indeterminate cytology. For the detection of recurrent or residual thyroid cancer, serum thyroglobulin is the only circulating marker in clinical practice. However, it lacks sensitivity and is unreliable specifically in the presence of antibodies to thyroglobulin. Recent studies demonstrated a significant role of measuring the mRNA of thyroglobulin, thyroid peroxidase, thyroid-stimulating hormone receptor, and sodium/iodine symporter in peripheral blood for monitoring of the recurrence of thyroid cancer.
성인 인공와우이식 환자의 수술전 전정기능: 언어습득 여부에 따른 비교
한재준,홍승노,박하나로,구자원,이준호,오승하,장선오,이민영,서명환 대한이비인후과학회 2014 대한이비인후과학회지 두경부외과학 Vol.57 No.2
Background and Objectives Cochlear system and vestibular system have close relationship anatomically and developmentally. According to previous literatures, there are high incidences of vestibular dysfunction in subjects with severe hearing loss. The aim of this study is to validate the status of vestibular function in adults with profound hearing loss, and to compare the status of vestibular function between pre-lingual and post-lingual deaf. Subjects and Method Vestibular function of 59 patients who had profound hearing loss was reviewed retrospectively. Patient’s information and audiometry, Korean version Central Institute for the Deaf (KCID) scores, caloric test, rotation chair test and vestibular evoked myogenic potential (VEMP) were analyzed. The subjects were divided into two groups, prelingual deaf (pre-LD, n=12) and postlingual deaf (post-LD, n=47). We analyzed the difference between two groups. Results Fifty nine point six percent of patients showed hypo-function in caloric test. In the rotational chair test, abnormality of step velocity gain (43.1%), time constant (51.8%), sinusoidal harmonic acceleration (SHA)-gain (53.4%), SHA-phase lead (29.1%) and SHA-asymmetry (23.6%) were found. There was unilateral (20.0%) and bilateral (37.5%) hypo-function when VEMP was tested. Between pre-LD and post-LD groups, VEMP test revealed statistically significant difference between two groups (p=0.020). Post-LD groups had more patients of unilateral or bilateral hypofunction in VEMP test. The KCID score showed no significant correlation with vestibular functions. Conclusion The patients of bilateral profound hearing loss showed unilateral or bilateral vestibular functional abnormality despite of no dizziness. Prevalence of lateral canal dysfunction does not seem to be different between pre-LD group and post-LD group. And post-LD groups have higher probability of saccular dysfunction than pre-LD. Korean J Otorhinolaryngol-Head Neck Surg 2014;57:89-95