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유두형 신세포암종의 세침흡인 세포학적 소견 - 1예 보고 -
우영주,김성숙,이종화,Woo, Yeong-Ju,Kim, Sung-Sook,Lee, Jong-Wha 대한세포병리학회 1998 대한세포병리학회지 Vol.9 No.1
Papillary renal cell carcinoma (RCC) is an uncommon subtype of RCC that has distinctive gross, histologic, and cytogenetic features. The cytologic features of FNA are abundant papillary clusters and relatively few single cells. The cells are usually small and contain uniform nuclei; numerous macrophages with foamy cytoplasm are often found in the background. We describe a case of papillary renal cell carcinoma evaluated by fine needle aspiration cytology(FNAC) in a 42 year-old man. The smear showed a few papillary clusters and numerous macrophages with foamy cytoplasm in the background. With adequate cellularity, papillary RCC can be distinguished reliably from non-papillary RCC by FNAC.
체강 삼출액의 진단에 있어서 $PLC-{\gamma}1$ 면역 염색의 유용성
우영주,김성숙,Woo, Yeong-Ju,Kim, Sung-Sook 대한세포병리학회 1997 대한세포병리학회지 Vol.8 No.2
Cytologic diagnosis of reactive or malignant effusion is sometimes difficult. Especially, differentiation of benign reactive mesothelial cells from malignant cells in body effusion is more difficult. Recently, immunohistochemistry has been used to diagnose difficult cases. Phospholipase $C(PLC)-{\gamma}1$ is one of the isoenzyme of the PLC which plays central role in signal transduction involving cellular growth, differentiation and transformation by phosphorylating many protein component. Increased expression of $PLC-{\gamma}1$ in human breast carcinoma, colorectal carcinoma and stomach cancers are reported. To evaluate the efficacy of positive $PLC-{\gamma}1$ immunostaining in the diagnosis of malignancy in effusions, paraffin-embedded cell blocks of pleural fluid and ascites from 10 patients(5 metastatic adenocarcinomas, and 5 reactive mesothelial cells) were immunostained with a monoclonal antibody to $PLC-{\gamma}1$. $PLC-{\gamma}1$ immuostained all the adenocarcinomas in cell block(5/5) with intense membrane pattern, however, none of the reactive mesothelial proliferations stained with the diagnostic membrane pattern. Thus, our study strongly supports the conclusion that $PLC-{\gamma}1$ immunopositivity is likely to become a useful adjunct for the diagnosis of malignancy in effusions.
우영주,최연선 한국소음진동공학회 2003 한국소음진동공학회 논문집 Vol.13 No.11
The nonlinear vibration of moving viscoelastic belts excited by the eccentricity of pulleys is investigated through experimental and analytical methods. Laboratory measurements demonstrate the nonlinearities in the responses of the belt particularly in the resonance region and with the variation of tension, The measurements of the belt motion are made using noncontact laser sensors. Jump and hysteresis phenomenon are observed experimentally and were studied with a model. which considers the nonlinear relation of belt stretch. An ordinary differential equation is derived as a working form of the belt equation of motion, Numerical results show good agreements with the experimental observations, which demonstrates the nonlinearity of viscoelastic moving belts,