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배경국 대한영상의학회 1996 대한영상의학회지 Vol.35 No.4
Purpose : To determine the radiologic characteristics of the hepatocellular carcinoma with intrabile ducttumor growth and extension. Materials and Methods : We analyzed the arterial-dominant phase(ADP) CT scans, hepaticangiograms and cholangiograms in nine cases of hepatocellular carcinomas with intrabile duct tumor growth andextension confirmed by tumor thrombectomy. Results : The gross types were nodular in three cases and massive infive. Two masses were larger than 6cm, four were between 3 and 6cm, and three were less than 3cm. Among six casesof ADP-CT scan, dense contrast enhancement was observed in four, minimal enhancement in one, and no enhancement inone. In one case we were unable to find a primary mass. With regard to tumor staining on hepatic arteriograms,five cases were hypervascular, one case was hypovascular, and the remaing one was not found. All tumor thrombiwere seen as filling defects which were dilating the bile duct on cholangiograms. Among five intrabile ducttumors, thrombi were detected on ADP-CT scan(n=6), dense contrast enhancement was observed in one case, minimalenhancement in two cases and no enhancement in two cases. Conclusion : Intrabile duct tumor growth and extensionin hepatocellular carcinoma(HCC) does not correlate with location, mass size or tumor vascularity. It wasconcluded that tumor thrombi were formed through the direct invasion by a tumor of a branch of the intrahepaticduct, its growth in the distal direction in the biliary tree and subsequent extension to the common bile duct.Thrombi were more hypovascular than primary mass.
배경국 대한영상의학회 1997 대한영상의학회지 Vol.37 No.5
Linear sebaceous nevus syndrome, which is the association of nevus sebaceous of Jadassohn in the midfacialarea with seizure and mental deficiency, has been reported in at least 100 cases. Hemimegalencephaly is a raremalformation consisting of unilateral hypertrophy of the brain, an abnormal gyral pattern, thickened cortex, whitematter abnormality, and lateral ventricular dilatation. The authors report a case of linear sebaceous nevussyndrome with hemimegalencephaly, diagnosed on the basis of clinical data and brain MRI.
배경국 대한영상의학회 1996 대한영상의학회지 Vol.34 No.3
간의 원발성 평활근육종은 평활근세포에서 기원하는 매우 드문 종양으로 진단을 위 해서는 주의 깊은 기결정 검사를 통해 간 이외의 장기에서 발생한 원발성 평활근육종을 제 외시키는 것이 필수적이다. 저자들이 경험한 간의 원발성 평활근육종은 초음파에서 낭종성 종괴로 보였으며 등 혹은 고음영의 두꺼운 벽은 급속조영 CT상 조영전기에서 종괴 벽을 따 라 혈관구조물로 생각되는 사행성의 불규칙한 조영증강을보였고 조영후기에서 종괴의 벽이 조영전기에 비해 좀더 조영증강이 되어 보였으며 종괴중심부는 조영증강이 되지 않는 남성 병변을 보였다. 혈관조영검사에서는 종괴의 변연부를 따라 종양 혈관들이 풍부하게 분포하 는 과혈관성의 종괴로 관찰되었다. Primary hepatic leiomyosarcoma is an extremely rare neoplasm, with fewer than 60 previously reported cases. Apatient was admitted with pain and palpable mass in the right upper abdomen. An ultrasonogram showed a largecystic mass with irregular thick wall in the right lobe of the liver. On a CT scan, the mass showed irregularenhancement along its wall, but central portion was not enhanced. A celiac angiogram revealed a largehypervascular mass with abundant abnormal vascularities in its peripheral portion. Right hepatectomy wasundertaken, and histologic examination, revealed hepatic leiomyosarcoma.
배경국,권운정,최성훈,이종화,차희정 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.4
Pulmonary tumor embolism is commonly discovered at autopsy, but is rarely suspected ante-mortem. Microangiopathy is an uncommon and distinct form of simple tumor pulmonary embolism. Here, we present a 52-year-old male with tumor thrombotic microangiopathy and pulmonary infarction, which might have originated from intraductal papillary mucinous tumor of the pancreas. Multiple wedge-shaped consolidations were found initially and aggravated with cavitation. These CT features of pulmonary infarction were pathologically confirmed to result from pulmonary tumor thrombotic microangiopathy.
이중 초음파 검사를 이용한 미숙아의 전 뇌동맥 혈류 측정
황미수,배경국,이재교 영남대학교 의과대학 1997 Yeungnam University Journal of Medicine Vol.14 No.1
55명의 미숙아를 대상으로 이중 도플러 초음파 검사를 실시하여 대천문을 통한 전 뇌동맥의 혈류 속도 및 혈류형태를 조사하였다. 미숙아에서 뇌 혈류속도 및 pulsatility index는 재태기간, 출생 체중, 및 미숙아의 나이 등의 증가에 따라 비례하여 증가하였으나 resistive index는 감소하였다. 뇌실 출혈이 있는 환아 군에서는 특징적인 resistive index의 증가가 보였지만 혈류속도 및 pulsatility index는 불규칙하였다. 정상 미숙아의 뇌혈류 관찰 및 환아 군에서의 뇌혈류 검사에서 이중 도플러 초음파 검사는 비침습적이고 재현성도 뛰어나 선별검사로 유용한 방법이라고 생각한다. We measured the blood flow velocity of the anterior cerebral artery via anterior fontancelle approach of fifty five preterm neonates woth duplex Doppler sonography and analyzed the waveform and calculated pulsatility index, resistive index. Intracranial velocities and pulsatility indexes were increased with increasing gestational age, birth weight, and age of the neonate, but resistive indices decreased. In sick babies, characteristic resistive index indrement were seen in patients with intraventricular hemorrhage, but no statistical difference was seen in patients with respiratory distress syndrome. Our results suggest that duplex Doppler sonograghy is a useful noninvasive means of monitoring cerebrohemodynamics in normal preterm neonates and flow change of sick babies.
이중 초음파 검사를 이용한 미숙아의 전 노동맥 혈류 측정
황미수,배경국,이재교 영남대학교 의과대학 1997 Yeungnam University Journal of Medicine Vol.14 No.1
We measured the blood flow velocity of the anterior cerebral artery via anterior fontanelle approach of fifty five preterm neonates with duplex Doppler sonography and analyzed the waveform and calculated pulsatility index were increased with increasing gestational age, birth weight, and age of the neonate, but resistive indices decreased. In sick babies, characteristic resistive index increment were seen in patients with intraventricular hemorrhage, but no statistical difference was seen in patients with respiratory distress syndrome. Our results suggest that duplex Doppler sonography is a use ful noninvasive means of monitoring cerebrohemodynamics in normal pretem neonates and flow change of sick babies