• Journal of Chest Surgery
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• 제56권6호
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• pp.403-411
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• 2023

Background: The concept of oligo-recurrence has not been generally applied in esophageal cancer. This study aimed to determine the prognostic significance of the number of recurrences in esophageal cancer. Methods: Patients with squamous cell carcinoma who underwent curative esophagectomy with R0 or R1 resection and who experienced a confirmed recurrence were included. The study included 321 eligible participants from March 2001 to December 2019. The relationship between the number of recurrences and post-recurrence survival was investigated. Results: The mean age was 63.8±8.1 years, and the majority of the participants (97.5%) were men. The median time to recurrence was 10.7 months, and the median survival time after recurrence was 8.8 months. Multiple recurrences with simultaneous local, regional, and distant locations were common (38%). In terms of the number of recurrences, single recurrences were the most common (38.3%) and had the best post-recurrence survival rate (median, 17.1 months; p<0.001). Patients with 2 or 3 recurrences showed equivalent survival to each other and longer survival than those with 4 or more (median, 9.4 months; p<0.001). In the multivariable analysis, the significant predictors of post-recurrence survival were body mass index, minimally invasive esophagectomy, N stage, R0 resection, post-recurrence treatment, and the number of recurrences (p<0.05). Conclusion: After esophagectomy, the number of recurrences was the most significant risk factor influencing post-recurrence survival in patients with esophageal cancer. In esophageal cancer, oligo-recurrence can be defined as a recurrence with three or fewer metastases. More intensive treatment might be recommended if oligo-recurrence occurs.

• 대한수학회보
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• 제44권4호
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• pp.841-849
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• 2007

In this paper we discuss the Hyers-Ulam-Rassias stability of a system of first order linear recurrences with variable coefficients in Banach spaces. The concept of the Hyers-Ulam-Rassias stability originated from Th. M. Rassias# stability theorem that appeared in his paper: On the stability of the linear mapping in Banach spaces, Proc. Amer. Math. Soc. 72 (1978), 297-300. As an application, the Hyers-Ulam-Rassias stability of a p-order linear recurrence with variable coefficients is proved.

• 대한수학회보
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• 제56권2호
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• pp.491-499
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• 2019

The problem of finding fast computing methods for Bernoulli numbers has a long and interesting history. In this paper, the author provides new proofs for two lacunary recurrence relations with gaps of length four and eight for the Bernoulli numbers. These proofs invoked the fact that the nth powers of ${\pi}^2$, ${\pi}^4$ and ${\pi}^8$ can be expressed in terms of the nth elementary symmetric functions.

• Clinical and Experimental Pediatrics
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• 제46권9호
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• pp.939-943
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• 2003

Acyclovir 정주요법에도 불구하고 출생 2개월 이내에 2회 재발되었던 HSV 2형에 의한 신생아 SEM 질환의 치료 및 발생억제를 위한 지속적인 경구용 acyclovir 억제요법을 실시하여 장기간 억제효과를 보았던 재발성 HSV 감염 1례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• Pediatric Infection and Vaccine
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• 제3권1호
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• pp.94-100
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• 1996

Streptococcal pneumoniae is the second most coomon cause of meningitis in infancy and a major respiratory pathogen. It is the one of the most common cause of acquired pneumonia and otitis media in childhood. Intracranial extesion of acute otitis media occur somewhat more often from poorly pneumatized than from well-pneumatized temporal bones and in ears with a history of previous attacks of otitis media. We experienced a case of pneumococcal meningitis with 3 time recurrences in a 6 year-old male patient who had hospitalized with high fever, headache, vomiting and stupor mental state. He was diagnosed as CSF study and brain CT. Brain CT showed poorly pneumatized right mastoid region of temporal bone at that time. We report a case of pneumococcal meningitis with 3 time recurrences due to poorly pnematized mastoid region of temporal bone. A review of literatures was also presented briefly.

• Journal of Chest Surgery
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• 제33권7호
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• pp.570-575
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• 2000

Background; Surgical resection remains the mainstay of treatment for esophageal cancer. Despite recent advances in surgical therapy, i.e. en bloc resection and extended lymphadenectomy, the overall long-term prognosis of patients with esophageal carcinoma has not, however, improved during the last decades. One of the major reasons in its relatively high recurrence rate. Material and Method; A retrospective review of recurrent patte군 of cancer in 42 patients who underwent curative surgery for primary esophageal cancer was performed clinically and histo-phthologically. Result; Nineteen patients had developed recurrece during the 18 to 52 months(mean 34.2 nonths), 8 had local recurrences, 1 had both, and 11 had systemic recurrences. Twelve patients(63%) had developed recurrence within 1 year, 5 patients(26%) between 1 year to 2 patients(11%) after 2 years. The recurrence rate according to growth pattern of tumor or presence of microinvasive findings was not statistically significant, but it increased significantly in clinical tumor stage III than stage IIA, B and in patients with the number of metastatic lymph node over ten. Conclusion; Post-operative recurrences of esophageal cancer appear as a high rate even though curative wide resection was done. Several clinical and histo-pathological factors correlate with the recurrence.

• 동의신경정신과학회지
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• 제20권2호
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• pp.217-227
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• 2009

Objectives : Multiple sclerosis (MS) is a demyelination disease of central nervous system, presenting a various neurological disorders depending on the lesion. In the view of oriental medicine, MS is similar to Flaccidity-syndrome(痿證). Also, since MS is a chronic disease which repeats the recurrences with periods of remission of the symptoms in between, it may usually be accompanied by depression. However, the etiology, treatment, and cause of recurrence of MS remain unknown, and also, as the recurrences of MS have been repeated, disease burden has been accumulated, which aggravates disorder. This case of MS experienced depression after the patient had been diagnosed as bad consequence based on the past 5 times recurrences of multiple sclerosis. Methods : We saw the causes as vicera and bowels functional disorder which might have come from a poor diet. Thus, we diagnosed this case as dual deficiency of spleen and kidney(脾腎兩虛), stagnant qi transforming into fire(氣鬱化火) and liver-kidney deficiency(肝腎不足) and treated it with Herb medication, acupuncture therapy, and supportive therapy, making the patient better. Results : We have improved the patient's condition to the time before 5th recurrence. Conclusions : This result suggests that our oriental medical treatments was effective on multiple sclerosis with depression.

• 대한치과의사협회지
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• 제54권9호
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• pp.684-691
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• 2016

The odontogenic cutaneous fistula in facial area is uncommon but, well defined disease. It is difficult to diagnose from the dental origin of cutaneous sinus tract. Most patients may visit to the dermatologists or general hospital without cause of disease. They usually be treated by repeated surgical excisions, biopsies, and antibiotic medications, but suffered from recurrences. We studied odontogenic cutaneous fistula through retrospective study in Jeju Special Self-Governing Province between 1 January 2009 and 12 December 2015. There were 3 males, 5 females from 14 to 78 years old with an average age of 50.4 years old. Only 2 patients felt the toothache, others didn't detect it. They suffered from recurrences and repeated treatments for 3 to 11 months with an average period of 7.9 months. They visited average 2.8 hospitals before a precise diagnosis in a dental clinic. All cases were fully healed endodontic treatment or extraction of origin teeth without recurrences. In conclusion, the cause of cutaneous fistula in facial area can be odontogenic. If dentists or doctors diagnose a patient with cutaneous fistula on face, they should check dental problems or take x-ray views for precise diagnosis. It could be helpful for differential diagnosis.

• Radiation Oncology Journal
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• 제5권2호
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• pp.131-136
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• 1987

수술후 골반강내에 국소재발된 자궁경부암의 진단하에 1979년부터 1984년까지 6년 간 서울대학교병원 치료방사선과에서 방사선치료를 시행한 47명의 환자에 대하여 후향적 분석을 시행하여 다음과 같은 결과를 얻었다. 1. 방사선치료 후 완전관해를 보인 환자는 35명으로 완전관해율은 $74.5\%$이었다. 2. 완전관해를 보인 35명중 7명에서 국소재발 또는 원격전이를 보여 전체적으로 19명 $(40.4\%)$의 환자에서 치료실패를 나타내었다. 3. 4년 무병생존을 및 전체생존율은 각각 50.1 및 $55.2\%$이었다. 4. 병소의 범위를 자궁경부암에 적응되는 FIGO병기 결정기준에 의하여 분류한 결과 각 병기에 따른 4년 생존율은 IIa기에서 $80.4\%$, IIb기에서 $73.0\%$, IIIb기에서 $25.0\%$, IVa기에서 $0\%$이었다. 따라서 수술 후 골강내에 국소재발된 자궁경부암의 경우 적절한 방사선치료를 시행함으로써 좋은 결과를 얻을 수 있음을 알 수 있었다.

• Kyungpook Mathematical Journal
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• 제22권1호
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• pp.117-121
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• 1982