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Gastric Neuroendocrine Carcinoma Presenting as a Wandering Exophytic Mass: A Case Report
Hyo-SungKwak,Jeong-MinLee,Young-HwanLee,Young-KonKim,Chong-SooKim 대한영상의학회 2002 대한영상의학회지 Vol.47 No.2
We describe a case of poorly differentiated gastric neuroendocrine carcinoma presenting as a wandering exophytic mass. CT imaging revealed a 14.5×10.0×8.0 cm, lobulated, solid mass with a multifocal necrotic portion at the right of the peritoneal cavity. It was attached to the antrum of the stomach by a broad stalk, and shown by MR imaging to be well-defined, lobulated and solid, with a multifocal necrotic portion, and at the left of the peritoneal cavity. Isointensity was apparent at T1-weighted imaging, and slightly hyperintensity at T2-weighted imaging, and after gadolinium injection, enhancement was stronger than at precontrast imaging. 방사선 검사에서 유주 외장성 종양으로 나타난 미분화성 신경내분비성 암종 1예를 보고한다. 전산화단층촬영에서 복막강 우측에 위치한 약 14.5×10.0×8.0 cm 크기의 내부에 괴상부위를 가진 분엽성 고형 종양이 있었다. 종양은 넓은줄기(stalk)에 의해 위문부와 연결되어 있었다. 자기공명영상에서 종양은 복막강 좌측에 위치하며, T1 강조영상에서 등신호강도, T2 강조영상에서 고신호강도를 보였으며, 강한 조영증강소견을 보였다. 이러한 방사선 검사에서 종양의 유주는 위와 연결된 부위를 확인함으로써 종양의 원발부위를 알 수 있다.
Jeong-MinLee,In-HwanKim,Hyo-SungKwak,Ji-HyunYouk,Young-MinHan,Chong-SooKim 대한영상의학회 2003 Korean Journal of Radiology Vol.4 No.1
Objective: To compare the performance of superparamagnetic iron oxide (SPIO)-enhanced magnetic resonance (MR) imaging at 1.5T and dual-phase spiral computed tomography (CT) for the depiction of small hypervascular hepatocellular carcinomas (HCCs). Materials and Methods: Forty-three patients with 70 small nodular HCCs (5-20 mm; mean, 13.7 mm) were examined. Diagnosis was based on the results of surgical biopsy in 22 patients and by the combined assessment of MR imaging, lipiodol CT, alpha feto-protein levels, and angiographic findings in 21. MR imaging consisted of respiratory-triggered turbo spin-echo T2-weighted imaging, T1- weighted fast low-angle shot, and T2 -weighted fast imaging with steady-state precession imaging before and after SPIO enhancement. CT imaging was performed with 5-mm collimation and 1:1.4 pitch, and began 30 and 65 secs after the injection of 150 mL of contrast medium at a rate of 3 mL/sec. Two blinded observers reviewed all images independently on a segment-by-segment basis. Diagnostic accuracy was evaluated using receiver operating characteristics (ROC) analysis. Results: The mean areas (Az) under the ROC curves were 0.85 for SPIOenhanced MR imaging and 0.79 for dual-phase spiral CT (p < .05). The mean sensitivity of SPIO-enhanced MR imaging was significantly higher than that of CT (p < .05), i.e. 70.6% for MR imaging and 58.1% for CT. MR imaging had higher false-positive rates than dual-phase spiral CT, but the difference was not statistically significant (3.7% vs 3.3%) (p > .05). Conclusion: SPIO-enhanced MR imaging is more sensitive than dual-phase spiral CT for the depiction of small hypervascular hepatocellular carcinomas.
서재빈,Kyung-WooPark,Hae-Young Lee,Hyun-Jae Kang,Bon-Kwon Koo,Sang-Hyun Kim,Hyo-SooKim 대한심장학회 2013 Korean Circulation Journal Vol.43 No.5
Background and Objectives: Intravascular ultrasound (IVUS) is helpful during percutaneous coronary intervention (PCI), because it can be used to confirm good apposition or optimal expansion of stents. In this study, we compared angiographic result as well as clinical out-comes between two different strategies of IVUS-guidance, the selective vs. the routine. Subjects and Methods: The study population consisted of 279 patients undergoing electric and emergency intracoronary implatation of TAXUS stent from August 2003 through September 2006. For this study, we divided physicians into two groups; doctors to perform PCI under ‘routine’ IVUS-guidance vs. PCI under ‘selective’ IVUS-guidance. Among a total of 279 patients (384 lesions) who underwent PCI with TAXUS stent, 87 patients underwent the procedure under the strategy of ‘routine’ IVUS-guidance, whereas 192 patients under ‘se-lective’ IVUS-guidance. Results: The baseline clinical features of the patients are similar between the two groups. The actual rate of IVUS usage was 89.2% in the routine group and 68.2% in the selective group (p<0.01). A high rate of adjunctive ballooning was determined as a remarkable procedure-related parameter which was comparable between the two groups (72.5% vs. 76.1% in routine vs. selective, p=0.57). The minimal lumen diameter at immediate post-PCI was significantly larger in the routine IVUS group than that in the selective group (2.58 mm vs. 2.48 mm,p=0.03). However, the difference disappeared during the follow-up period (1.98 mm vs. 1.98 mm, p=0.94). Clinical outcomes at 1 year were not different between the two groups. Conclusion: PCI under the strategy of ‘selective’ IVUS-guidance was comparable to PCI under ‘routine’ IVUS-guidance in terms of angiographic and clinical outcomes in circumstances with frequent use of adjunctive ballooning after stenting.