OBJECTIVES: The aim of this study was to evaluate the differences in patients with positional dependent sleep apnea according to their non-supine apnea-hypopnea index (AHI, > or =5 vs. <5). METHODS: 92 patients with positional sleep apnea were evaluated. The patients were divided into two groups : group I was non-supine AHI having > or =5 ; group II was non-supine AHI having less than 5. Statistical analysis was performed to find the difference between two groups. RESULTS: In 92 patients, the number of group I patients was 11 (12%) and the number of group II patients was 81 (88%). In the severe AHI group, percentage of group I was dominated (70%) and showing a significant difference compared with the mild and moderate AHI groups (p<.05). In the severe body mass index (BMI) group, percentage of group I was dominated (54.5%) and showing a significant difference compared with of the mild and moderate BMI groups (p<.05). The percentage of group I was significantly higher than group II (p<.05) in the AHI, supine AHI, non-supine AHI and snore time. CONCLUSIONS: In patients with positional sleep apnea, severe OSA and high BMI are more common in patients with non-supine AHI> or =5 than non-supine AHI<5.
Body Mass Index ; Humans ; Sleep Apnea Syndromes ; Sleep Apnea, Obstructive

Mucocele of the appendix is uncomrnon and rarely diagnosed preoperatively. The malignant rountpart-i.e. mucinous cystadenocarcinoma--has the same grross appearance and many micro scopic features in cornmon wilhe the benign form. It rnay be associated with ovarian mucinous cystadenoma of strikingly similar microscopic appearence. A serious complication is a rupture of the mucoeele resulting in pseudomyxoma peritonei. Each case of benign and malignant mucocelr of the appendix falsely diagnosecl as an oovarian tumor before laparotxumy are presented wilh a brief rieview of the literatures.
Appendix* ; Cystadenoma, Mucinous ; Mucins ; Mucocele* ; Pseudomyxoma Peritonei ; Rupture

BACKGROUND AND OBJECTIVES: The majority of laryngeal tumors are known to be SCC (squamous cell carcinoma). Non-SCC (non-squamous cell cancers) of the larynx represent a diverse spectrum of diseases with different prognosis and ratio-nales of management from SCC. Therapeutic options to these tumors depend on their histopathological characteristics and clinical behaviors. The purpose of this study was to assess the unique aspects of the non-SCC and to draw diagnosis and provide management options and prognostic variables. MATERIALS AND METHOD: Eleven non-SCC of the larynx from the 212 patients who were diagnosed with larynx cancer during their 3-year visits from 1997 to 2000 were reviewed retrospectively. RESULTS: The incidence of non-SCC was 5.2%. Pathology of non-SCC revealed 3 cases of malignant lymphoma, 2 cases of verrucous cell carcinoma and neuroendocrine carcinoma one case each of basaloid squamous cell carninoma, salivary duct carcinoma, adenocarcinoma, and spindle cell carcinoma. The most common site of origin was supraglottis (6 case, 56.5%), followed by glottis (4 cases, 36.4%) and subglottis (2 cases, 17.2%). Non-Hodgkin's lymphomas and basaloid squamous cell carninoma were treated by chemotherapy. The remaining cases were treated with surgery followed by postoperative radio-therapy or postoperative chemotherapy. The mean follow-up period was 26.8 months (12-43 months). CONCLUSION: Non-SCC accounts for approximately 5.2% of all malignancies of the larynx. Tissue biopsy is the most important diagnostic tool for the non-SCC of the larynx and the tissue sample must be obtained from the deep portion of the submucosal layer. Except for malignant lymphomas, the combined therapy that includes surgery would be the best method of treatment for non-SCC.
Adenocarcinoma ; Biopsy ; Carcinoma, Neuroendocrine ; Diagnosis ; Drug Therapy ; Follow-Up Studies ; Glottis ; Humans ; Incidence ; Laryngeal Neoplasms ; Larynx* ; Lymphoma ; Lymphoma, Non-Hodgkin ; Pathology ; Prognosis ; Retrospective Studies ; Salivary Ducts

Dermoid cysts are congenital anomalies that arise from trapped pouches of the ectoderm near the normal fold or from the surface ectoderm that has failed to separate from the neural tube. Dermoid cysts of head and neck area are relatively rare, whereas those located in the postauricular area are extremely rare. In Korea, only 3 cases of postauricular dermoid cysts have been reported. In this article, we report a case of postauricular dermoid cyst in a 21 year-old man, along with a review of articles.
Dermoid Cyst* ; Ear, External ; Ectoderm ; Head ; Humans ; Korea ; Neck ; Neural Tube ; Young Adult

Painful post-traumatic trigeminal neuropathy (PPTTN) is a distinctive facial pain syndrome characterized by facial and/or oral pain along the sensory distribution of the fifth cranial nerve with a clear history of a traumatic event. To our knowledge, PPTTN after endoscopic sinus surgery (ESS) has not been reported in the literature. We present a case of an elderly woman who experienced unilateral neuralgic pain after undergoing ESS. Following ESS of the left sphenoid sinus to remove suspicious fungus balls, the patient complained of intermittent facial pain occurring in the left periorbital and forehead area. Clinical diagnosis of PPTTN was established after a comprehensive multidisciplinary assessment. The pain disappeared completely after a 5-week medical treatment with gabapentin. Since PPTTN cases associated with ESS are extremely rare, our case demonstrates that PPTTN should be considered in the differential diagnosis of facial pain developing after ESS and can be successfully treated with medical therapy.

OBJECTIVE: Delayed hinge fracture (HF) that develops after cervical open door laminoplasty can be a source of postoperative complications such as axial pain. However, risk factors related to this complication remain unclear. We performed a retrospective clinical series to determine risk factors for delayed HF following plate-only open-door cervical laminoplasty. METHODS: Patients who underwent plate-only open-door laminoplasty and had available postoperative computed tomography (CT) scans (80 patients with 270 laminae) were enrolled. Hinge status, hinge gutter location, open location, hinge width, number of screws used, operation level, and open angle were observed in the CT to determine radiographic outcome. Demographic data were collected as well. Radiographic and clinical parameters were analyzed using univariate and multivariate logistic regression analysis to determine the risk factors for HF. RESULTS: Univariate logistic regression analysis results indicated poor initial hinge status, medially placed hinge gutter, double screw fixation on the elevated lamina, upper surgical level, and wide open angle as predictors for HF (p<0.05). Initial hinge status seemed to be the most powerful risk factor for HF (p=0.000) and thus was collinear with other variables. Therefore, multivariate logistic regression analysis was performed excluding initial hinge status, and the results indicated that medially placed hinge gutter, double screw fixation on the elevated lamina, and upper surgical level were risk factors for HF after adjustment for other confounding factors. CONCLUSION: To prevent HF and to draw a successful postoperative outcome after cervical laminoplasty, surgical and clinical precautions should be considered.
Humans ; Laminoplasty* ; Logistic Models ; Postoperative Complications ; Retrospective Studies ; Risk Factors*

BACKGROUND AND OBJECTIVES: This study was performed to elucidate the relationship between body mass index (BMI) and snoring time (ST) in patients with obstructive sleep apnea (OSA) using a portable sleep monitoring device. SUBJECTS AND METHOD: From May 2011 to December 2015, 492 patients whose apnea-hypopnea index (AHI) was more than 5 were enrolled. Subjects were classified into 3 groups on the basis of the AHI (mild=5≤AHI<15; moderate=15≤AHI<30; severe=30≤AHI). Using the multiple linear regression analysis, the relationship between ST and other variables (BMI, arousal index, O2 desaturation events, age and AHI) were measured in each group. RESULTS: There was significant association between ST and BMI, especially in the severe group (p=0.005). CONCLUSION: In the severe group, reducing BMI is important to improve ST.
Arousal ; Body Mass Index* ; Humans ; Linear Models ; Methods ; Polysomnography ; Sleep Apnea, Obstructive* ; Snoring*

Background and Objectives: The diagnosis of hearing impairment is based on repeated audiometry, including pure tone audiometry (PTA), speech reception threshold test (SRT), and speech discrimination test (SDT). SDT results particularly show a wide discrepancy upon repeated testing, while malingering is suspected when having more than 12% difference between 3 individual SDT results. Therefore, in this study, we compared the proportion of malingering found in repeated SDT with that found in other audiometric tests and analyzed the characteristics of malingering group in order to reevaluate the current criteria of defining malingering.Subjects and Method We retrospectively assessed the audiometry results of 113 patients (226 ears) with hearing impairment. Each ear was divided into a malingering group and a true hearing loss group. The proportion of ears corresponding to each malingering criterion was compared using a chi-square test. An independent sample t-test was performed to identify the differences between the characteristics between the two groups. Results: The number of ears that met the malingering criteria were 19 (8.41%) in PTA, 15 (6.64%) in SRT, and 75 (33.19%) in SDT. There was a significant difference in the proportion of malingering between the 3 hearing test modalities (p<0.001). There was no significant difference in auditory brainstem response, mean age and sex distribution between the malingering group and the true hearing loss group. Conclusion When conducting repeated SDT, there is a risk of misdiagnosing an actual hearing loss patient as a malingering patient under the current malingering criteria. Therefore, the current criteria on SDT requires reevaluation.

Background and Objectives: There is no clear standard for the difference in the thresholds of auditory brainstem response (ABR) and pure tone audiometry (PTA) when using ABR to evaluate the reliability of PTA. Therefore, we assessed the difference in the thresholds of ABR and PTA for each frequency. Consequently, we present here the actual difference values between the two tests that can be used as a reference in the clinic.Subjects and Method We retrospectively assessed the audiometry results of 129 ears. Ears in which the hearing thresholds of each frequency continuously declined were classified as the downward group. We compared the average of differences between the two tests by frequency. The differences were compared for each hearing level from 50 dB or higher. Results: For all ears, the appropriate range of difference value was ±5 dB at 2 kHz. At 1 kHz, the ABR threshold was 10 dB higher than PTA, and it was 10 dB less than PTA at 4 kHz. In the downward group, the difference value increased by 10 dB at 1 kHz and 4 kHz. In the subgroups at each hearing level, the difference value showed similar results (p<0.05). Conclusion The difference in the threshold, regardless of the severity or tendency of hearing loss, was the smallest at 2 kHz and the range was ±5 dB. ABR was 10 dB higher at 1 kHz and and 10 dB lower at 4 kHz than PTA. In the downward group, the difference at 1 kHz and 4 kHz increased by 10 dB each.

Background and Objectives: Patients with hearing loss and tinnitus experience difficulty in engaging in daily conversations. However, only few studies have examined how tinnitus affects individual speech discrimination to comprehend speech. This study aimed to analyze the correlation between tinnitus frequency and speech discrimination in patients with hearing loss and tinnitus.Subjects and Method A total of 275 ears with hearing impairment were retrospectively analyzed via audiometry and tinnitogram. The ears were divided into three groups depending on the frequency of their tinnitus. Average pure tone audiometry (PTA), hearing threshold of tinnitus frequency, speech discrimination test (SDT), degree of discrepancy between tinnitus frequency and worst PTA frequency were collected and compared among the three groups. Results: No significant difference was observed in PTA in the three patient groups. Hearing threshold of tinnitus frequency was the highest at 78.27 dB in the high-frequency group and the lowest at 45.14 dB in the low-frequency group. SDT was significantly lower (53.69%) in the low-frequency group. The correlation between tinnitus loudness and SDT was the strongest in the low-frequency group. The degree of discrepancy between tinnitus frequency and worst PTA frequency was also significantly observed in the low-frequency group. Conclusion Patients who are severely affected by tinnitus are found to have significant discrepancy between tinnitus frequency and worst PTA frequency, indicating decreased SDT.