Sung Min Chung

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Pulsed electromagnetic field (PEMF) has been shown to improve the rate of peripheral nerve regeneration. In the present study we investigated the expression of neuronal nitric oxide synthase (nNOS) and phospholipase C-gamma1 (PLC-gamma1) in regenerating rat laryngeal nerves during the exposure to PEMF after surgical transection and reanastomosis. Axons were(More)
Pharyngeal foreign bodies are common problems seen at emergency rooms or ENT outpatient clinics, and fish bones are the most common foreign bodies encountered in East Asia and in Korea. One of the rare complications of a swallowed sharp fish bone is its migration from the site of entry into the subcutaneous tissues of the neck. We present four unusual cases(More)
BACKGROUND AIMS Although mesenchymal stromal cells (MSC) from human palatine tonsils (tonsillar MSC, T-MSC) have been isolated, whether T-MSC isolated from multiple donors are feasible for cell banking has not been studied. METHODS T-MSC before and after a standard protocol of cryopreservation and thawing were assessed regarding several basic(More)
A 65-year-old man with back pain had plain radiographs that showed multiple osteolytic bone lesions of the pelvis, femur and L-spine; an magnetic resonance imaging scan of the L-spine showed extensive bony resorption with a posterior epidural mass involving the L1 spinous process; these findings suggested multiple myeloma or bony metastasis. However, all(More)
Bronchial foreign bodies (FB) in children are difficult to diagnose when there is no witness to the aspiration event. The experience with three-dimensional CT and virtual bronchoscopic reconstruction (3D-CTVB) was reviewed for the diagnosis of bronchial FB in pediatric patients in this study. A retrospective review of ten pediatric patients (M:F = 5:5) who(More)
The purpose of this study is to evaluate the feasibility of small intestinal submucosa (SIS) application on the parathyroid autotransplantation in a rat model of hypoparathyroidism. The rats were divided into four groups: NC (no procedure, n = 5), PTX (total parathyroidectomy, n = 6), PT (total parathyroidectomy and parathyroid autotransplantation, n = 10)(More)
We develop a guideline for rating the physical impairment of otolaryngologic fields. Assessment of hearing disturbance and tinnitus required physical examination, pure tone audiometry, speech audiometry, impedance audiometry, brainstem evoked response audiometry, Bekesy audiometry, otoacoustic emission test, and imaging examination. History taking, physical(More)
Cystic lymphangioma is a rare congenital anomaly of the lymphatic system. Its embryopathogenesis is still controversial. Most lesions present in infancy or early childhood with a swelling found in the head and neck region. We report the case of a woman who presented with a cystic swelling in the left supraclavicular region that appeared after left side(More)
BACKGROUND Dysphonia is one of the most common side effects of patients who use corticosteroid inhalers. The aim of this study was to investigate, prospectively, the occurrence of dysphonia in patients who used corticosteroid inhalers. METHODS Outpatients aged 18 years or older initially treated with inhaled corticosteroids were recruited. All patients(More)
OBJECTIVES Sustained vowel is a widely used material of acoustic analysis. However, vowel phonation does not sufficiently demonstrate sentence-based real-life phonation, and biases may occur depending on the test subjects intent during pronunciation. The purpose of this study was to investigate the differences between the results of acoustic analysis using(More)