• Title/Summary/Keyword: Rare event

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Ecosystem Consequences of an Anomalously High Zooplankton Biomass in the South Sea of Korea

  • Kang, Young-Shil;Rebstock, Ginger-A.
    • Journal of the korean society of oceanography
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    • v.39 no.4
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    • pp.207-211
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    • 2004
  • We used long time series of hydrographic and biological variables to examine the ecosystem consequences of a rare, anomalous event in the south sea of Korea. The highest zooplankton biomass in 36 years of sampling occurred in April 1997. Zooplankton biomass exceeded 2 times than the long-term mean at 35% of the stations. Copepod abundance was low in April and June and also failed to show a seasonal peak in 1997. Mackerel (Scomber japonicus) catches were very low in spring 1997 and 1999, in spite of a positive correlation between zooplankton biomass and mackerel catches at lags of 0, 12 and 24 months. It was discussed that a high zooplankton biomass with low copepod abundance in April 1997 resulted from unusual high temperature and salps abundance. Water temperatures were ca. $2^{\circ}C$ higher than the long-term mean at the surface. Salps and doliolids (thaliaceans), especially the warm-water species Doliolum nationalis, dominated the zooplankton. An unusual incursion of the Tsushima Warm Current may have transported the thaliaceans into the area and/or produced favorable conditions for a bloom. This study suggested that taxonomic composition of zooplankton was important to decide mackerel catches.

Framing advocacy event: Comparing news coverage and Facebook comments of the Belt and Road Forum in Pakistan and the USA

  • Xu, Yi
    • Journal of Contemporary Eastern Asia
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    • v.20 no.1
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    • pp.1-23
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    • 2021
  • With regard to the recent developments in public diplomacy, the increasing fusion of strategic communication appears necessary. China engages in public diplomacy with a strategic purpose to shape its national image abroad. Hosting diplomatic advocacy event is regarded as an instrument with expectations to present reliable and responsible image and promote international collaborations. The present research focuses on the Belt and Road Forum (BRF) in May 2017 with the objective to analyze its outcomes and influence on the international news agenda, news frames, and foreign citizens' comments online. The quantitative content analyses are used to compare the media reports (N=364) and Facebook users' comments on the selected news (N=957) between the US and Pakistan. Results reveal that Pakistani media provided more diverse frames and attributed more positive evaluations to the BRF than the US media. However, Facebook comments expressed more unfavorable opinions toward the BRF and China's image with rare differences between two countries. In conclusion, the BRF has served as an eye-catching advocacy of Chinese foreign policy, as it influenced the news agenda in two selected countries. However, news frames vary due to the differences in media system and the involvement in the BRF. China's public diplomacy practices follow a traditional top-down communication which needs meticulous subdivision of target stakeholders, delicate messaging strategies, and integrated tactics.

Soft Tissue Implantation of Thyroid Adenomatous Hyperplasia after Endoscopic Thyroid Surgery:Report of a Case (내시경 갑상선 절제술 후에 발생한 갑상선 선종성 과형성증의 연조직 착상 1예)

  • Lee, Yong-Sang;Yoon, Ji-Sup;Nam, Kee-Hyun;Chung, Woong-Youn;Park, Cheong-Soo
    • Korean Journal of Head & Neck Oncology
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    • v.23 no.1
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    • pp.46-49
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    • 2007
  • Soft tissue implantation of thyroid tissue is a very rare event. Needle tract implantation of thyroid carcinoma after fine-needle aspiration (FNA) biopsy has been occasionally reported, but implantation of benign thyroid tumor tissue is extremely rare. Rupture of thyroid tissues during surgery or trauma may cause the thyroid tissue to be implanted and result in multiple palpable nodules in soft tissue of the neck. Several reports have shown the possibility of implantation of normal or hyperplastic thyroid tissues in soft tissue. We herein report a case of implantation of adenomatous hyperplastic tissue in the neck along the trochar and previous operation site after endoscopic thyroid surgery, which was successfully treated by complete excision.

POSTOPERATIVE MANIC EPISODE BY SLEEP DEPRIVATION AND STRESSFUL EVENT (수면 결핍과 스트레스에 의한 술후 조증 삽화에 대한 증례보고)

  • Kong, Jun-Ha;Lee, Baek-Soo;Kim, Yeo-Gab;Kwon, Yong-Dae;Yoon, Byung-Wook;Choi, Byung-Joon
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.30 no.1
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    • pp.114-116
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    • 2008
  • Mania in psychiatry describes not only the state of temporary elation of the mood but also of the general mental function such as contents of a thought, thinking process, motivation, enthusiasm, interest, behavior, slumber and physical activities. The time of period when the above changes of mood, mental and behavioral disorder appear is called a manic episode. Postoperative mania is very rare and it has been reported only 5 times in english literature. It's an extremely rare case which has not yet been reported in Oral and Maxillofacial surgery. Patients normally deny the symptoms and it is easy to miss the diagnosis since the patient tends to seem content and happy. Patients show the following initial symptoms of mania - postoperative insomnia, atypical gregariousness, euphoria and unstability. Patients who are not disaffected with insomnia can also be included.

Tarsal Tunnel Syndrome Induced by a Ganglionic Mass: A Case Report (족근관에 발생한 결절종으로 인한 족근관 증후군의 치험 1례)

  • Seul, Chul Hwan;Nam, Sang Hyun;Chung, Yoon Kyu
    • Archives of Plastic Surgery
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    • v.33 no.5
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    • pp.648-651
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    • 2006
  • Purpose: Tarsal tunnel syndrome is characterized by pain and paresthesia of the entire posterior tibial nerve and its branches of the lower extremity. The cause of the tarsal tunnel syndrome is usually unknown but, rare case of space occupying benign tumors such as a ganglion may be one of the causes. We report our experiences of surgical treatment of the tarsal tunnel syndrome caused by ganglion we have encountered recently. Methods: A 54-year-old male patient presented with paresthesia, burning pain, positive Tinnel's sign without preceeding trauma, infection or any other causes of event. With surgical intervention, we completely removed the space occupying ganglion and with performed surgical release of the posterior tibial nerve and its branches. Results: At a 14-month follow up examination, the symptoms of paresthesia, burning pain, sensory disturbance was much improved compared to the preoperative conditions. Takakura's rating scale was elevated from 4(Poor) to 8(Good). Conclusion: We report our surgical experience of a rare case of tarsal tunnel syndrome caused by a ganglion, with a review of literature.

A Case of Primary Squamous Cell Carcinoma of the Thyroid Gland (갑상선에 발생한 원발성 편평세포암 1예)

  • Seol, Jeong-Hun;Kim, Hong-Jun;Hong, Jae-Min;Rho, Kyung-Jin;Hong, Hyun-Jun
    • Korean Journal of Head & Neck Oncology
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    • v.26 no.2
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    • pp.240-242
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    • 2010
  • Primary squamous cell carcinoma of the thyroid gland is a very rare event, representing much less than 1% of all malignant tumors of the thyroid gland. The cancer is characterized by rapidly progressive clinical course in spite of its differentiated morphologic features. In most cases, a squamous epithelium is believed to be a result of metaplasia of a follicular epithelium, although in rare exceptions, it can originate from a remnant of the thyroglossal duct or ultimobranchial body. Squamous cell carcinoma of the thyroid gland can occur in a pure form or mixed with adenocarcinoma. Because their clinical behavior is more aggressive than that of other malignant neoplasm of thyroid gland, the tumor should be treated more vigorously at its initial stage. Recently, authors experienced one case of primary squamous cell carcinoma of the thyroid gland. We report our case with a brief review of literature.

What is the best treatment of heterotopic cervical pregnancies for a successful pregnancy outcome?

  • Kim, Ji Won;Park, Han Moie;Lee, Woo Sik;Yoon, Tae Ki
    • Clinical and Experimental Reproductive Medicine
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    • v.39 no.4
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    • pp.187-192
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    • 2012
  • Heterotopic pregnancy is rare event and the risk is increased with assisted reproductive technology procedures. Heterotopic cervical pregnancy is even more unusual. We report a rare case of heterotopic cervical pregnancy that was managed successfully. A 36-year-old women who conceived by IVF-ICSI was diagnosed with heterotopic cervical pregnancy. She visited the emergency room with vaginal bleeding at 5 weeks of gestation and underwent careful intracervical gestational sac reduction with forceps under abdominal guidance the next day. The postoperative course was uneventful and with regular check-ups, the intrauterine pregnancy (IUP) progressed unremarkably through 41 weeks with delivery of a healthy newborn. We reviewed a total of 37 cases of heterotopic pregnancy that have been reported in the English language literature. There have been many attempts to eliminate the cervical embryo while preserving the IUP, and complete cervical evacuation is important in order to avoid infection, bleeding, and premature birth.

Brain Metastases from Cholangiocarcinoma: a First Case Series in Thailand

  • Chindaprasirt, Jarin;Sookprasert, Aumkhae;Sawanyawisuth, Kittisak;Limpawattana, Panita;Tiamkao, Somsak
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.5
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    • pp.1995-1997
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    • 2012
  • Background: Brain metastasis from cholangiocarcinoma (CCA) is a rare but fatal event. To the best of our knowledge, only few cases have been reported. Herein, we report the incident rate and a first case series of brain metastases from CCA. Methods: Between January 2006 and December 2010 5,164 patients were treated at Srinagarind hospital, Khon Kaen University; of those, 8 patients developed brain metastasis. Here we reviewed clinical data and survival times. Results: The incident rate of brain metastases from CCA was 0.15%. The median age of the patients was 60 years. Tumor subtypes were intrahepatic in 6 and hilar in 2 patients. All suffered from symptoms related to brain metastasis. Three patients were treated with whole-brain radiation therapy (WBRT), one of whom also underwent surgery. The median survival after the diagnosis of brain metastasis was 9.5 weeks (1-28 weeks). The longest survival observed in a patient in RPA class I with two brain lesions and received WBRT. Conclusion: This is a first case series of brain metastases from CCA with the incident rate of 0.15%. It is rare and associated with short survival time.

Synchronous Occurrence of a Gastric Adenocarcinoma and a GIST (Gastrointestinal Stromal Tumor): A Case Report (위에 동시성으로 발생한 조기위암 및 위장관간질종양)

  • Jee, Sung-Bae;Seo, Kyung-Jin;Heo, Hun;Jeon, Hae-Myung
    • Journal of Gastric Cancer
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    • v.7 no.4
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    • pp.261-264
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    • 2007
  • A gastric adenocarcinoma is the second most common cause of cancer deaths worldwide, but there are some geographical differences in its incidence. A gastrointestinal tumor is an uncommon disease with a wide spectrum of aggressive behavior. These two tumors have a distinct pathogenesis, and synchronous occurrence of an adenocarcinoma and a GIST (gastrointestinal stromal tumor) in the stomach is very rare. We report a case of synchronous occurrence of a gastric adenocarcinoma and GIST in a 64-year-old man. We performed the following tests: barium swallowing test, gastroduodenoscopy, and CT scanning. We performed a total gastrectomy, and a 9 em-sized GIST at the fundus and a small early gastric cancer at the antrum were confirmed pathologically. Some explanations for this rare case exist, but in our opinion, the synchronous occurrence is a rare but probable event that can happen in an endemic area. We describe a case of synchronous occurrence of a gastric adenocarcinoma and GIST in the stomach, with a review of the literature.

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Extraskeletal Ewing Sarcomas in Late Adolescence and Adults: A Study of 37 Patients

  • Tao, Hai-Tao;Hu, Yi;Wang, Jin-Liang;Cheng, Yao;Zhang, Xin;Wang, Huan;Zhang, Su-Jie
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.5
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    • pp.2967-2971
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    • 2013
  • Background: Extraskeletal Ewing sarcoma (EES)/primitive neuroectodermal tumours (PNET) are rare soft tissue sarcomas. Prognostic factors and optimal therapy are still unconfirmed. Materials and Methods: We performed a retrospective analysis on patients to explore the clinic characteristics and prognostic factors of this rare disease. A total of 37 patients older than 15 years referred to our institute from Jan., 2002 to Jan., 2012 were reviewed. The characteristics, treatment and outcome were collected and analyzed. Results: The median age was 28 years (range 15-65); the median size of primary tumours was 8.2 cm (range 2-19). Sixteen patients (43%) had metastatic disease at the initial presentation. Wide surgical margins were achieved in 14 cases (38%). Anthracycline or platinum-based chemotherapy was performed on 29 patients (74%). Radiotherapy was delivered in 13 (35%). At a median follow-up visit of 24 months (range 2-81), the media event-free survival (EFS) and overall survival (OS) were 15.8 and 30.2 months, respectively. The 3-year EFS and OS rates were 24% and 43%, respectively. Metastases at presentation and wide surgical margins were significantly associated with OS and EFS. Tumour size was significantly associated with OS but not EFS. There were no significant differences between anthracycline and platinum based chemotherapy regarding EFS and OS. Conclusions: EES/PNET is a malignant tumour with high recurrence and frequent distant metastasis. Multimodality therapy featuring wide surgical margins, aggressive chemotherapy and adjuvant local radiotherapy is necessary for this rare disease. Platinum-based chemotherapy can be used as an adjuvant therapy.