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조은윤,박희대,김선희,박운선,채승완,김어진,손진희,Cho, Eun-Yoon,Park, Hee-Dae,Kim, Sun-Hee,Park, Woon-Sun,Chae, Seoung-Wan,Kim, Eo-Jin,Sohn, Jin-Hee 대한세포병리학회 2004 대한세포병리학회지 Vol.15 No.2
To analyze the accuracy and usefulness of sputum cytology as a screening method, 103 cases of histologically proven lung cancer registered from 1998 to 2000 at Kangbuk Samsung Hospital were retrospectively examined. We reviewed the original cytologic and surgical diagnoses for the cases, and the cytology slides of all cytologically negative cases. The overall sensitivity of sputum cytology was 0.83 ; the sensitivity of prebronchoscopy sputum cytology for bronchogenic carcinoma was 0.87. Central tumor location (P=0.002), tumor size (>2.4 cm), (P=0.027) and the number of sputum samples $(\geq3)$ (P=0.001) were associated with a positive cytologic diagnosis. Of the 18 cytologically negative cases, 9 cases(38% of smears) were determined to be insufficient for diagnosis, due strictly to low cellularity and saliva. After a review of the cytology slides of cytologically negative cases, we identified several atypical clusters in one case of bronchioloalveolar carcinoma. This negativity was thus attributed to an interpretation error (1/18, 5.6%). Our results suggest that its sensitivity is more strongly related to the specimen adequacy and the times of sampling than to interpretation error. In terms of sensitivity, specificity, accessibility, cost, and morbidity associated with the screening tests, sputum cytology was found to be an accurate effective screening method for lung cancer.
Analysis of Fine Needle Aspiration Cytology and Ultrasonography of Metastatic Tumors to the Thyroid
조은윤,오영륜,Cho, Eun-Yoon,Oh, Young-Lyun The Korean Society for Cytopathology 2007 대한세포병리학회지 Vol.18 No.2
Cytologic diagnosis of the metastatic tumors to the thyroid is important in the management of the patients. There have been rare reports analyzing fine-needle aspiration (FNA) cytology of metastatic tumors to the thyroid. This study examines comprehensive cytologic findings of metastatic tumors to the thyroid with radiologic findings. The FNA cytology slides obtained from 12 cases with metastatic tumors of the thyroid; lung cancer (n=5), tongue and tonsil cancer (n=3), esophageal cancer (n=2), and breast cancer (n=2) were reviewed. Radiological study showed single mass with heterogeneous texture or multiple masses without calcification. Metastatic tumor was easily considered in a differential diagnosis of FNA cytology because they had peculiar cytological features which were not seen in primary thyroid tumor. The smear background varied from predominantly necrotic, bloody, and inflammatory to colloid. The aspirates exhibited a mixture of benign follicular cells and malignant cells in 6 cases. The characteristic cytoplasmic features of the tumor cells, such as keratin, mucin and melanin, were found in 9 cases. Although some cases mimic primary thyroid neoplasm, a careful examination of the cytological characteristics may help cytopathologists to recognize a metastatic tumor in the thyroid by FNA, and may help the clinicians to establish a proper treatment plan.
세침흡인 세포검사와 조직검사의 진단 일치율 및 정확도에 대한 조사
손진희,채승완,조은윤,김어진,Sohn, Jin-Hee,Chae, Seoung-Wan,Cho, Eun-Yoon,Kim, Eo-Jin 대한세포병리학회 2003 대한세포병리학회지 Vol.14 No.2
Fine needle aspiration cytology (FNAC) has been known as a very sensitive and effective method for preoperative diagnosis. We studied cases preoperatively diagnosed by FNAC and confirmed by the histopathologic examination to define the effectiveness of FNAC. A total of 567 cases including breast, thyroid gland, lymph node, and soft tissue confirmed histologically after FNAC were enrolled, among 2,844 FNAC cases from January 1996 to March 2000. Overall sensitivity and specificity of FNAC were 93% and 100%, respectively. Sensitivity and specificity of FNAC by sites or organs were 91% and 100% in breast, 100% and 100% in thyroid, 97% and 100% in lymph node, and 71% and 100% in soft tissue, respectively. Nine cases showed diagnostic discrepancy; eight cases of sampling error and one case of interpretation error. Five cases, diagnosed as fibrocystic change at FNAC but invasive ductal carcinoma after the histopathologic examination, were categorized as sampling error due to the presence of diffuse fibrosis or deep seated location. One case of breast, diagnosed descriptively as atypical ductal and stromal cells suggesting invasive ductal carcinoma at FNAC but malignant phyllodes tumor histologically, was categorized as interpretation error. Other cases of sampling errors were two cases of soft tissue, a case of lymph node, and a case of salivary gland.
성기선,손정경,조은윤,Sung, Ki-Sun,Son, Jeong-Gyeong,Cho, Eun-Yoon 대한근골격종양학회 2005 대한골관절종양학회지 Vol.11 No.2
간엽성 연골육종은 전형적인 연골육종과는 달리 매우 드문 것으로 알려져 있으며, 골격계 부위에서는 하지, 특히 대퇴골에서 대부분 발생하며, 다음으로 두안면부, 골반부에서 발생하는 것으로 보고되어 왔다. 11세 남아가 좌측 후족부 통증으로 타 병원에서 양성 골 종양 추정 하에 수술적 제거술을 시행 받고, 수술 후 조직검사 결과, 악성 종양으로 진단되어, 본원으로 전원 되었다. 조직 재 판독 결과, 좌측 종골 간엽성 연골 육종으로 진단되어, 슬하부 절단을 시행하였다. 외래 경과 관찰 중 술 후 3개월에 흉부 컴퓨터 촬영상 다발성 폐 전이성 결절 소견 보여 전이절제술 및 항암 치료를 시행하였다. 문헌상 간엽성 연골육종이 족저부 연부 조직에 발생한 경우는 1예가 있으나 종골 골조직에 발생한 경우는 없어 문헌 고찰과 함께 보고하는 바이다. Mesenchymal chondrosarcoma is very rare and mostly occurs in lower extremity, especially femur, head and face, and pelvis in order. An eleven-year old male patient suffered from left heel pain for several months and underwent biopsy at another hospital. A Malignant bone tumor was suspected, so the patient was transferred to our hospital. We reviewed the outside pathologic slide, which revealed the diagnosis of mesenchymal chondrosarcoma. It was treated by a below knee amputation. Three months later, a chest computed tomography (CT) revealed multiple metastatic nodules in both lungs. All metastatic nodules were surgically excised and the patient received postoperative chemotherapy. As far as our knowledge, mesenchymal chondrosarcoma in the calcaneus is the first case in the world. Thus, we report a case of mesenchymal chondrosarcoma in the calcaneus with thorough review of documents.
조승일 ( Seong-il Cho ),최명섭 ( Myung-sup Choi ),배문환 ( Moon-hwan Bae ),이문정 ( Moon-jung Lee ),우희숙 ( Hee-suck Woo ),박순채 ( Soon-chae Park ),조은윤 ( Eun-yoon Cho ) 대한임상검사과학회 2010 대한임상검사과학회지(KJCLS) Vol.42 No.3
To improve accuracy of the immunohistochemical testing and fluorescence in situ hybridization (FISH) study as well as a routine histology diagnosis in breast cancer, quality improvement for optimal tissue handling is mandatory. We evaluate fraction defective of 7107 blocks from 349 breast cancer patients, who underwent surgical treatment at Samsung Medical Center Seoul, Korea from January 1, 2009 to March 31, 2010. We decided pre-improvement period from January, 2009 to June, 2009. In the first quality improvement period (July, 2009 to September, 2009) we made improvements in protocol of gross examination. In the second quality improvement period (October, 2009 to December, 2009) we attempted more effective formalin fixation such as frequent exchange of formalin and use of separate fixation container for each case. In the third quality improvement period (January, 2010 to March, 2010) improvement of tissue processor was performed. We achieved a marked reduction of fraction defective (9-16%) through efforts to improve quality of formalin-fixed, paraffin-embedded blocks when compared to pre-improvement period.
유방암 환자의 감시림프절 생검술에서 발견되는 고립종양세포의 의미
김균지(Gyunji Kim),최재혁(Jae Hyuck Choi),김완욱(Wan Wook Kim),이세경(Se Kyung Lee),임혜인(Hye In Lim),조은윤(Eun Yoon Cho),이정언(Jeong Eon Lee),남석진(Seok Jin Nam),양정현(Jung-Hyun Yang) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.77 No.6
Purpose: Sentinel lymph node (SLN) biopsy has replaced unnecessary axillary dissection in breast cancer surgery except when the nodes are positive for macrometastasis. But guidelines for isolated tumor cells (ITCs) found in SLNs has not yet been established and further study is ongoing. The goal of this study was to consider the implication of the isolated tumor cells found in the SLNs of Korean breast cancer patients. Methods: Between September 2003 and March 2008, 985 primary breast cancer patients underwent SLN biopsy. On reviewing the medical records, 81 patients were found to have ITCs in SLNs without macrometastasis or micrometastasis. ITCs were detected by serial sectioning and immunohistochemistry. Results: The mean number of detected SLNs was 3.5±1.7. Thirty three patients had multifocally distributed ITCs and 9 had ITCs in multiple SLNs whose N stage was N0 (i+). Completion axillary dissection has been performed in 9 patients and 3 of them (33.3%) finally were found to be N1 or N1mi. Conclusion: The characteristics of ITCs are not clear yet and their prognostic value is still under investigation. Until the significance of ITCs found in SLNs become definite, axillary dissection should be more aggressively considered.