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김순영,이상길,류향주 대한상부위장관ㆍ헬리코박터학회 2017 Korean Journal of Helicobacter Upper Gastrointesti Vol.17 No.3
Esophageal squamous cell carcinoma (ESCC) presenting as subepithelial tumor-like growth is a very rare form of the disease. We report a case of primary ESCC with intramural growth, covered with normal esophageal epithelium. The patient was initially referred due to a subepithelial tumor at the mid-esophagus, butendoscopic ultrasonography revealed a heterogeneously hypoechoic mass, which disrupted the structure of the muscularis propria. An endoscopic submucosal dissection was performed for accurate diagnosis, and the lesion was diagnosed histopathologically as moderately differentiated squamous cell carcinoma. Computed tomography revealed an enlarged left upper paratracheal lymph node, which showed increased uptake on positron emission tomography. The patient underwent subtotal esophagectomy with total mediastinal lymphadenectomy and adjuvant chemotherapy. Primary ESCC with intramural growth is extremely rare. For accurate diagnosis, when there is a high index of suspicion, additional investigations such as endoscopic ultrasonography or diagnostic endoscopic submucosal dissection might be needed.
송승환,신정훈,류향주,김대준,박성용 대한흉부외과학회 2018 Journal of Chest Surgery (J Chest Surg) Vol.51 No.2
Malignant gastrointestinal neuroectodermal tumor (GNET) is a very rare disease entity, especially in the esophagus. The diagnosis of GNET is based on histologic, immunohistochemical, and genetic findings. The choice o f treatment is c omplete resection, a nd further treatment o ptions c an b e considered. H erein, w e describe a case of successful surgical treatment of a 23-year-old man with recurrent malignant esophageal GNET.
침샘관암에서 PD-L1의 발현율 분석과 종양 표지자로서의 효용성에 대한 고찰
이용주,고윤우,윤선옥,류향주,김혜련,신향애,Lee, Yong Ju,Koh, Yoon Woo,Yoon, Sun Och,Ryu, Hyang Joo,Kim, Hye Ryun,Shin, Hyang Ae 대한두경부종양학회 2019 대한두경부 종양학회지 Vol.35 No.1
Background/Objectives: Despite multiple approaches of treatments for salivary duct carcinoma, there has been a need for more successful treatment methods because of its poor prognosis. Treatment options like immunotherapy using new technologies have been attempted. Based on recent study results indicating that targeting programmed death receptors are effective in treating various cancers, this study aimed to identify the frequency of PD-L1 expression and its impact on survival rate in salivary duct carcinoma. Materials & Methods: We studied 33 patients with salivary gland cancer who were available for histologic specimens. We examined the expression of PD-L1 in the tissues and analyzed the association with the survival rate and the association with various clinical parameters. Results: According to this study and review of similar studies, we discovered that the expression of PD-L1 in salivary duct carcinoma was lower than other types of cancers. The impact of PD-L1 on survival rate also showed inconsistency in salivary duct carcinoma. Conclusion: Immunotherapy by PD-1/PD-L1 checkpoint blockade in salivary duct carcinoma needs further evaluation for clinical application.
홍종원,김요한,최윤락,주동진,백우열,서영철,오원택,조재용,이상철,김상겸,류향주,전경옥,이원재 연세대학교의과대학 2024 Yonsei medical journal Vol.65 No.2
Purpose: With the revision of the Organ and Transplantation Act in 2018, the hand has become legal as an area of transplantable organs in Korea. In January 2021, the first hand allotransplantation since legalization was successfully performed, and we have per formed a total of three successful hand transplantation since then. By comparing and incorporating our experiences, this study aimed to provide a comprehensive reconstructive solution for hand amputation in Korea. Materials and Methods: Recipients were selected through a structured preoperative evaluation, and hand transplantations were performed at the distal forearm level. Postoperatively, patients were treated with three-drug immunosuppressive regimen, and func tional outcomes were monitored. Results: The hand transplantations were performed without intraoperative complications. All patients had partial skin necrosis and underwent additional surgical procedures in 2 months after transplantation. After additional operations, no further severe complications were observed. Also, patients developed acute rejection within 3 months of surgery, but all resolved within 2 weeks after steroid pulse therapy. Motor and sensory function improved dramatically, and patients were very satisfied with the appear ance and function of their transplanted hands. Conclusion: Hand transplantation is a viable reconstructive option, and patients have shown positive functional and psychologi cal outcomes. Although this study has limitations, such as the small number of patients and short follow-up period, we should fo cus on continued recovery of hand function, and be careful not to develop side effects from immunosuppressive drugs. Through the present study, we will continue to strive for a bright future regarding hand transplantation in Korea.