• Investigative Magnetic Resonance Imaging
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• 제22권4호
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• pp.272-276
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• 2018

Extra-articular tenosynovial giant cell tumor (TS-GCT) in retropharyngeal space is a rare case. We found only two case reports in the literature, in which one was located in retropharynx or prevertebral space of the cervical spine. We describe a rare case of TS-GCT in the retropharynx, which was initially misdiagnosed as oropharyngeal cancer. Furthermore, we want to assure that extraarticular diffuse type TS-GCT should be considered in the differential diagnosis of lesions showing low signal intensity in MRI scan.

• 복식문화연구
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• 제21권4호
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• pp.606-611
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• 2013

It has been reported that tight sportswear could have complicated influence on physiological function of human body. The purpose of this present study was to investigate the effect of wearing gradient compression tights (GCT) on muscle strength and EMG activity during repeated isokinetic muscle contractions. Four healthy male undergraduate students performed maximal voluntary isokinetic concentric muscle contractions on biomechanical test and training systems with GCT and loose pants as control (Cont) respectively. During each test, the peak torque of extensor and flexor contractions and the surface electromyography (sEMG) of the rectus femoris and medial gastrocnemius was recorded simultaneously, the peak torque was recorded as an indicator of muscle strength, and the average amplitude and mean power frequency of sEMG were calculated as indicators of EMG activity. The results showed that: the peak torque decreased gradually during continuous muscle contractions both when the Cont and GCT were worn, average sEMG and mean power frequency declined along with the repetitions of muscle contractions for both wearing conditions, and the change tendency was consistence with that of peak torque. There was no obvious difference between the peak torque recorded wearing the Cont or wearing GCT, but when GCT were worn, average sEMG was lower and mean power frequency was higher than the Cont condition. In 24 samples obtained from four subjects, 80% of results showed the same trend. So we could make a conclusion that wearing GCT had no obvious effect on the improvement of muscle strength, but it would affect the EMG activity positivly.

• 대한골관절종양학회지
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• 제15권1호
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• pp.52-58
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• 2009

거대세포종은 늑골에서 드물게 발생할 수 있으며, 후중격에서 발생한 종괴로 나타난 늑골의 거대세포종은 지금까지 4 예가 보고되었다. 38세 남자의 늑골에서 발생하여 후중격 종괴로 보인 거대세포종 1 예를 문헌 고찰과 함께 보고한다. 흉부 전산화 단층 촬영에서 우측 후상부 중격의 대부분을 차지하는, 경계가 명확한 다분엽성의 종괴가 우측 3번 늑골과 흉추를 침범하고 있었다. 임상적으로는 후중격에서 발생한 신경절신경종 혹은 그와 동반된 악성 변화를 의심하였다. 그러나 육안적으로 종괴는 우측 3번 늑골에서 발생하여 늑골 바깥쪽으로 성장하는 모습을 보였고, 현미경적으로 균일하게 산재된 다핵 거대 세포와 단핵 기질 세포로 구성되어 있어 늑골에서 발생한 거대세포종에 합당하였다. 거대세포종의 치료를 위해서는 재발과 전이의 가능성을 고려하여 광범위한 수술적 절제와 술후 방사선 치료를 고려해야 한다. 후중격 신경절신경종은 수술적 절제만으로 치료가 가능한 종양이므로, 거대세포종과 반드시 감별해야 한다.

• 대한골관절종양학회지
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• 제13권2호
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• pp.167-172
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• 2007

거대 세포종(GCT)의 악성화 (malignant transformation)는 매우 드문 것으로 알려져 있다. 주로 악성화는 방사선 치료 후 발생하는 것으로 보고 되고 있으며, 방사선 치료 없이 악성화 하는 경우는 더욱 더 드물게 보고 되고 있다. 방사선 소견만으로는 진단하기 어려우며, 병리학적 진단 또한 종종 쉽지 않은 경우가 있다. 예후가 매우 불량하여 신속한 진단을 통해 공격적 치료를 조기에 시행하는 것이 매우 중요하다. 저자들은 최초에 거대 세포종으로 진단되었다가 재발 후 골육종으로 악성 전환된 증례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• Tuberculosis and Respiratory Diseases
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• 제43권2호
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• pp.243-250
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• 1996

Granular cell tumor(GCT) of tracheobronchial tree is a rare neoplasm comprising approximately 6-10% of all GCT and about 1.6% of all benign tumors of the tracheobronchial tree. Since the first observation of GCT in the bronchus by Kramer in the late 1930s, less than 100 cases have been reported in tracheobronchial tree, and probably no such case have been published in Korea yet. Here we report an experience concerning 53 year-old women with an active pulmonary tuberculosis, who also was diagnosed to have a bronchial GCT on bronchoscopy and immunohistochemistry of the specimens.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 춘계학술대회 논문집 센서 박막재료 반도체 세라믹
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• pp.213-216
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• 2003

Recently a new high power device GCT (Gate Commutated Turn-off) thyristor has been successfully introduced to high power converting application areas. GCT thyristor has a quite different turn-off mechanism to the GTO thyristor. All main current during turn-off operation is commutated to the gate. Therefore, IGCT thyristor has many superior characteristics compared with GTO thyristor; especially, snubberless tum-off capacibility and higher turn-on capacibility. The basic structure of the GeT thyristor is same as that of the GTO thyristor. This makes the blocking voltage higher and controllable on-state current higher. The turn-off characteristic of the GCT thyristor is influenced by the minority carrier lifetime and the performance of the gate drive unit. In this paper, we present turn-off characteristics of the 2.5kV PT(Punch-Through) type GCT as a function of the minority carrier lifetime and variation of the doping profile shape of p-base region.

• 대한세포병리학회지
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• 제18권2호
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• pp.157-160
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• 2007

Granular cell tumor (GCT) of the breast is a rare clinical entity, and is believed to be of schwannian origin and to follow a benign clinical course. A 50-year-old woman presented with a slowly growing mass in the right breast. Fine needle aspiration cytology revealed a cellular smear containing isolated or clustered cells showing round to oval nuclei with abundant oncocytic granular cytoplasm. Nuclei showed a fine granular chromatin pattern and occasional small single nucleoli. Cell boundaries were poorly defined, and naked nuclei were frequently found, Histologically, the tumor showed features of typical GCT, and immunohistochemical staining findings strongly supported the diagnosis. The present study demonstrates that GCT of the breast can mimic malignant lesions of breast both clinically and radiologically. The recognition of its cytologic features and suspicion of this lesion would undoubtedly aid the correct diagnosis of mammary GCT.

• 대한한방부인과학회지
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• 제22권4호
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• pp.187-193
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• 2009

Purpose: This paper is aim to report the effects of Gamchosasim-tang(GCT) on the genital ulcer suggested Behcet's disease. Methods: The patient in this case was 45-year-old. The chief complains were genital ulcers, mouth ulcers, fatigue, skin lesions (hand site), eye discomfort. She was treated by GCT. The progress of symptoms were evaluated by visual analogue sclae. Results: After the treatments, genital ulcer pain and mouth ulcer pain disappeared, fatigue, skin lesions, eye discomfort decreased. Conclusion: This clinical case indicate that GCT is effective in treatment of the genital ulcers. And GCT is considered that good effect is to Behcet's disease.

• 대한영상의학회지
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• 제84권5호
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• pp.1176-1180
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• 2023

과립세포종은 신경 또는 신경 주위 세포에서 생기는 드문 연부조직 종양이다. 저자들은 유방암 과거력을 가진 69세 여자 환자에서 액와부 과립세포종 증례를 보고하고 다양한 영상 소견을 논의하고자 한다. 초음파에서 왼쪽 액와부에 경계가 분명한 타원형의 비균질한 등에코, 고에코의 종괴였으며, 흉부 전산화단층촬영에서 대흉근의 바깥쪽에 경계가 분명한 타원형의 약간 조영 증강되는 종괴로 보였다. 초음파 유도하 조직 생검을 통해 과립세포종으로 최종 진단되었다. 추적 초음파에서 변화는 없었다. 과립세포종에 대해 잘 알고 있다면 조기 진단과 후속 관리를 용이하게 할 수 있을 것이다.

• Journal of Korean Neurosurgical Society
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• 제58권3호
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• pp.248-253
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• 2015

Objective : The treatment of giant cell tumor (GCT) is mainly performed surgically. However, GCT in spine seems difficult to treat because of the limited surgical accessibility and proximity. In this report, we analyzed the outcome of GCT treatment in spine. Methods : Between 2000 and 2012, 19 patients received treatment for GCT in spine. Median age at their first diagnosis was 31 years, 10 patients were male, and 9 female. Fourteen tumors were located in the sacrum, 1 in cervical, 1 in thoracic and 3 in lumbar spine. As primary treatment, gross total removal (GTR) was done in 6 patients, and subtotal removal (STR) in 13 patients. Radiation therapy (RT) as an adjuvant therapy was performed in 2 cases in GTR group and 10 cases in STR group. Results : During the follow-up, 7 patients had local recurrence (36.8%). The average period until recurrence after primary treatment was 14 months. No recurrence was detected in GTR group. Recurrence was noted in 7 out of 13 patients who underwent STR. These differences were statistically significant (p=0.024). A median of recurrence free period (RFP) was 84 months. Also average RFP of the RT group was 112 months, and non-RT group was 65 months. These differences were statistically significant (p=0.041). Conclusion : Treatment of choice for GCT in spine is a complete removal of tumor without neurological deficits. In case of incomplete removal, radiation therapy may be a useful adjuvant treatment modality.