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소간세포암과 간혈광조의 진단에 있어서 EPI의 유용성 : 급속 T2WI와의 비교
김석,이준우,김창원,정현우,최상열,이석홍,김병수,Kim, Suk,Lee, Jun Woo,Kim, Chang Won,Jung, Hyun Woo,Choi, Sang Yoel,Lee, Suck Hong,Kim, Byung Soo 대한영상의학회 1998 대한영상의학회지 Vol.38 No.5
Purpose : To compare single-shot echo-planar MR imaging(EPI) with breath-hold fast T2-weighted imaging(HASTEor Turbo spin-echo T2WI) for evaluation of the role of EPI in distinguishing small hepatocellular carcinoma fromcavernous hemangioma. Materials and Methods : We retrospectively evaluated MR images of 35 patients (21 cases ofsmall HCC and 14 cases of cavernous hemangioma). EPI and breath-hold fast T2WI images were obtained and comparedon the basis of lesion detection sensitivity, lesion-to-liver signal intensity ratio(SIR), contrast ratio(CT), andlesion-to-liver contrast to noise ratio(CNR). Results : For the detection of small HCC, the sensitivity of EPI andbreath-hold fast T2WI were equal in 14 of 21 cases(71.4%). The detection sensitivity of cavernous hemangioma withEPI and breath-hold fast T2WI was 100%(14/14). Mean SIR on breath-hold fast T2WI was 2.02$\pm$0.45 for small HCC and3.65$\pm$0.97 for cavernous hemangioma; on EPI, the corresponding figures wer 2.91$\pm$0.57 and 6.98$\pm$1.37. Mean CR onbreath-hold fast T2WI was 1.16$\pm$0.58 for small HCC and 2.65$\pm$0.57 for cavernous hemangioma; On EPI, the figuresobtained were 2.27$\pm$0.52 and 6.26$\pm$2.19, respectively. Mean CNR on breath-hold fast T2WI was 14.24$\pm$ 4.098 forsmall HCC and 50.28$\pm$10.96 for cavernous hemangioma, while on EPI, the corresponding figures were 13.84$\pm$3.02 and45.44$\pm$11.21. Conclusion : In detecting focal hepatic mass, the sensitivity of EPI and breath-hold fast T2WI arecomparable; for the diagnosis of small HCC and cavernous hemangioma, EPI can provide additional information.
이선경,박성민,이석홍,박승근,김동헌,양웅석,송근암,조몽,강양호,송철수,오현명 대한소화기학회 1998 대한소화기학회지 Vol.31 No.4
In this report, we describe the clinical, histological, and immunohistochemical features for a case of primary low-grade B-cell lymphoma of liver which was found incidentally. It was a round solitary nodule with a diameter of 3 cm. On abdominal CT, it appeared as a well defined hypodense and non enhanced mass in Coudinauds segment 6. The MRI showed low signal intensity in Tl-weighted imaging and high signal intensity in T2-weighted imaging. There was no evidence of the lymphoma in the extrahepatic regions. Right posterior segmentectomy of the liver was performed. The pathology showed the typical manifestation of a low-grade B-cell lymphoma of mucosa-associa.ted lymphoid tissue (MALT)-type. The centrocyte-like cells surrounded reactive B-cell follicles and formed lymphoepithelial lesions on bile ducts. The atypical lymphocytes were CD20 positive and ?-light chain positive. Primary hepatic lymphomas are rare but the lympomas of MALT can occur in numerous sites including stornach, intestine, salivary gland, lun, thyroid, ocular adnexa, thymus, urinary bladder, kidney, trachea, gallbladder and breast. The liver should be added to the list of extranodal sites where low-grade MALT lymphoma may occur. Primary low-grade hepatic B-cell lymphoma of mucosa-associated lymphoma tissue is required to be considered when a hepatic mass is found incidentally.