• Journal of Chest Surgery
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• 제33권4호
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• pp.338-341
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• 2000

Renal transplant recipients who received immunosuporessive agent are in high risk of development Kaposi's sarcoma. In Korea a few report of Kaposi's sarcoma has been pubilshed but any report of intrathoracic Kaposi's sarcoma provedn by open lung biopsy has not been pulbilshed until now. We report a case of intrathoracic Kaposi's sarcoma developed in a 25 year old Korean man, who had been operated renal transplantation due to end stage renal disease and received cyclosporine and prednisolone as immunosuppessive agent, without any other organ involvment and was proven by open lung biopsy. Although discontinuation of immunosuppressive agent, temporary symptomatic and radilolgic improvement were observed, he died 11 days later after open lung biopsy because of intractable resiratory failure.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제29권3호
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• pp.186-190
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• 2003

본과에서는 신장 이식자에서 매우 드물게 발현되는 구강내의 카포시 육종을 경험하였으며 이와 같이 장기 이식 후 면역 억제제를 투여하는 환자에서 구강내 카포시 육종의 발현시에는 전신적으로 이환된 경우가 많으므로 특별한 주의를 요하리라 사료된다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제31권4호
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• pp.343-348
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• 2009

본 증례는 전신성 홍반성 낭창으로 인해 2000년 4월부터 면역 억제제인 azathioprine 75mg과 prednisolne 35mg을 복용 중인 42세 여성 환자가 2004년 12월 상악 협측 치은의 종창, 증식, 동통 및 출혈을 주소로 내원하여 조직 생검 결과 모세 혈관종으로 진단되었으나, 2005년 1월 치은의 재발 병소의 절제 및 조직 생검으로 카포시 육종으로 진단되었고, 흉부의 피부 병변의 조직 생검과 흉부 전산화 단층 촬영 검사에서도 양측 폐에 다수의 결절을 보이는 카포시 육종으로 진단되었다. 의인성 면역억제제에 의한 카포시 육종으로 최종 진단되어, 면역 억제제와 부신피질호르몬제의 중단과, paclitaxel을 이용한 전신적인 항암화학 요법으로, 2008년11월 현재까지 재발의 징후 없이 구강, 피부, 폐의 병소에 대해 양호한 치료 결과를 얻었으나, 향후 전신성 홍반성 낭창의 악화 또는 카포시 육종의 재발 가능성이 있으므로 지속적인 추적 관찰이 요할 것으로 사료된다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제35권3호
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• pp.182-186
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• 2009

There are several oral lesions related with AIDS, such as candidiasis, hairy leukoplakia, Kaposi's sarcoma, aphthous stomatitis, lichen planus, and other opportunistic infectious diseases. Among the others, Kaposi's sarcoma, the most common malignant tumor associated with AIDS, is closely linked to the number of CD4+ T cell. Kaposi's sarcoma often occurs in palate, the most prone site, and has characteristic clinical features in most cases. Sometimes, the tumor induces underlying bone destruction at late stage. We report a case of a 27 year-old man with AIDS-associated Kaposi's sarcoma at left lower retromolar triangle, parapharyngeal area and discuss the management of AIDS patients in dentistry.

• Journal of Microbiology and Biotechnology
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• 제27권1호
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• pp.189-196
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• 2017

Kaposi's sarcoma-associated herpesvirus (KSHV) is associated with formation of Kaposi's sarcoma, multicentric Castleman's disease, and primary effusion lymphoma. Replication and transcription activator (RTA) genes are expressed upon reactivation of KSHV, which displays a biphasic life cycle consisting of latent and lytic replication phases. RTA protein expression results in KSHV genome amplification and successive viral lytic gene expression. Transcriptional activity of viral lytic genes is regulated through epigenetic modifications. In Raji cells latently infected with Epstein-Barr virus, various modifications, such as acetylation and methylation, have been identified at specific lysine residues in histone H4 during viral reactivation, supporting the theory that expression of specific lytic genes is controlled by histone modification processes. Data obtained from chromatin immunoprecipitation and quantitative real-time PCR analyses revealed alterations in the H4K8ac and H4K20me3 levels at lytic gene promoters during reactivation. Our results indicate that H4K20me3 is associated with the maintenance of latency, while H4K8ac contributes to KSHV reactivation in infected TREx BCBL-1 RTA cells.

• 대한피부과학회지
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• 제56권10호
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• pp.631-635
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• 2018

Microvenular hemangioma (MVH) is a rare acquired benign vascular neoplasm, which presents commonly as a solitary purple-to-red nodule or plaque measuring approximately 10 mm in diameter. MVH occurs primarily on the extremities or the trunk. Most lesions are solitary, and multiple lesions are rare. Histopathological features of MVH include numerous, scattered, thin and irregularly branching small vessels in the dermis and endothelial cells without atypia. Owing to similarities in clinical morphology and histopathological features, MVH may often be indistinguishable from the early patch stage of Kaposi sarcoma. Immunohistochemical (IHC) analysis helps differentiate between the 2 diseases. The results of IHC tests in patients with MVH show positive staining for CD31 and smooth muscle actin and typically, negative staining for the human herpes virus 8 antigen. We report a rare case of multiple MVH clinically mimicking the early patch stage of Kaposi sarcoma in a 63-year-old woman who presented with a 3-year history of slowly growing, compressible, soft, bluish-purple macules and plaques on the trunk and right arm.

• Genomics & Informatics
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• 제19권4호
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• pp.47.1-47.12
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• 2021

Kaposi's sarcoma-associated herpesvirus (KSHV) is one of the few human oncogenic viruses, which causes a variety of malignancies, including Kaposi's sarcoma, multicentric Castleman disease, and primary effusion lymphoma, particularly in human immunodeficiency virus patients. The currently available treatment options cannot always prevent the invasion and dissemination of this virus. In recent times, siRNA-based therapeutics are gaining prominence over conventional medications as siRNA can be designed to target almost any gene of interest. The ORF57 is a crucial regulatory protein for lytic gene expression of KSHV. Disruption of this gene translation will inevitably inhibit the replication of the virus in the host cell. Therefore, the ORF57 of KSHV could be a potential target for designing siRNA-based therapeutics. Considering both sequence preferences and target site accessibility, several online tools (i-SCORE Designer, Sfold web server) had been utilized to predict the siRNA guide strand against the ORF57. Subsequently, off-target filtration (BLAST), conservancy test (fuzznuc), and thermodynamics analysis (RNAcofold, RNAalifold, and RNA Structure web server) were also performed to select the most suitable siRNA sequences. Finally, two siRNAs were identified that passed all of the filtration phases and fulfilled the thermodynamic criteria. We hope that the siRNAs predicted in this study would be helpful for the development of new effective therapeutics against KSHV.

• Archives of Plastic Surgery
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• 제49권3호
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• pp.457-461
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• 2022

Kaposi's sarcoma (KS) is a cancer that causes patches of abnormal tissue to grow under the skin. It also occurs in the immunosuppressive population. KS is currently believed to be caused by infection with human herpes virus-8 (HHV-8) in non-human immunodeficiency virus patient. A 79-year-old female visited the outpatient clinic presenting with increasing number and size of palpable masses on both upper and lower extremities. She was first diagnosed as drug-erupted dermatitis and stopped her medications, but the symptoms got worse. We did partial biopsy, and KS with HHV-8 was diagnosed histopathologically. She planned to undergo further evaluations and proper treatments. This rare case suggests the need to consider a classic type of KS in the differential diagnosis of specific dermatologic symptoms such as macular, nodular, and darkish patches of upper or lower extremities in elderly patients. It is believed that this case helps to strengthen awareness of this rare disease.

• Radiation Oncology Journal
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• 제30권4호
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• pp.153-157
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• 2012

Purpose: There has been no definite consensus on standard treatment, either local or systemic, for the Kaposi's sarcoma (KS). Radiotherapy (RT) can be a good local therapeutic choice especially in non-AIDS associated KS (NAKS) for its indolent behavior. Materials and Methods: Medical records of 17 KS patients treated with RT at the Seoul National University Hospital from February 1998 to January 2012 were retrospectively reviewed. One human immunodeficiency virus (HIV)+ patient with 3 lesions was excluded. The total number of the lesion was 23 among the 16 patients. The median follow-up period was 27.9 months. Correlation between response and variables was analyzed using the logistic regression model. Median age of the patients was 75 years. All the 23 lesions were located at the extremities. Fourteen (61%) of those had pain or local swelling as the initial presentation. Ten patients had possible causes of immunodeficiency and were regarded as iatrogenic, and other 6 were classic KS. Median dose of RT was 36 Gy. Results: No KS-related death was observed. Excluding 2 with short-term follow-up only, complete response and partial response were obtained in 2 (9%) and 19 (73%) lesions, respectively. Of those, 3 lesions underwent local progression. Six had out-of-field recurrence after RT. Symptom improvement was achieved in 13 (93%) of 14 patients. Grade 2 skin toxicities were found in 9 lesions but all got improvement after treatment. When divided into responsive and progressive group, free from progression was not related to any of the possible variables. Conclusion: RT is effective in local control of NAKS resulting great response rate.

• 대한영상의학회지
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• 제81권5호
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• pp.1260-1265
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• 2020

카포시 육종은 후천성 면역 결핍 증후군(acquired immunodeficiency syndrome; 이하 AIDS)와 연관되어, 피부, 점막과 여러 장기를 침범하는 다발성의 혈관성 결절로 나타나는 신생물을 일컫는다. AIDS와 연관되어 생기는 위장관 카포시 육종은 내장에 파종성 질환으로 가장 흔하게 발생한다. 우리는 다양한 장기를 침범하여 복통과 함께 장관 내 출혈을 유발한 드문 카포시 육종의 영상 소견에 대해 보고한다. 회장 대장내시경을 통해 말단 회장, S자 결장, 직장 내 다양한 병변이 발견되었으며 소장 투시검사로 공장과 회장의 병변을 확인할 수 있었다. 복부 골반 전산화단층촬영에서 회장 내 조영증강된 다양한 납작한 병변과 복강 내 크기가 커진 림프절을 발견하였다. 조직병리학 검사에서 카포시 육종으로 최종 진단이 된 환자는 항레트로바이러스제로 치료를 시행 받았다. 최근 AIDS 환자의 수가 늘고 있는 상황에서, AIDS와 연관된 Kaposi's sarcoma의 영상학적 소견을 숙지하는 것은 영상의학과 의사를 비롯한 임상의사들에게 빠른 진단과 치료뿐만이 아니라 예상치 못한 AIDS의 감염 위험에 노출될 수 있는 의료진의 안전을 위해서도 필수적이다.