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1.
Zhejiang Da Xue Xue Bao Yi Xue Ban ; 37(2): 203-7, 2008 03.
Artigo em Zh | MEDLINE | ID: mdl-18422284

RESUMO

OBJECTIVE: To evaluate three dimensional dynamic contrast-enhanced magnetic resonance angiography (3D-DCE MRA) in diagnosis of cavernous transformation of portal vein (CTPV). METHODS: Twenty-four patients with CTPV underwent 3D-DCE MRA examinations and the reconstructed images were retrospectively analyzed. A series of clinical, laboratory and imaging studies were performed on all these cases. Among all cases 14 underwent operations and 2 with hepatocellular carcinoma complicated portal thrombosis received transhepatic artery chemoembolization. RESULT: The CTPA was located in the main trunk in 10 cases, in both the main trunk and left/right branches in 8, and in left or right branches of the portal vein in 4. In the remaining 2 cases CTPA was located at the level of superior mesenteric vein. MRA revealed multiple circuitous collateral veins striding over obstruction to extend into the liver in 9 cases,and in 7 it simultaneously showed streaky or dot-like low signal intensities representing thrombi in the extensively dilated network of portal system. MRA did not clearly demonstrate the structure of the portal vein but only showed multiple sinuous network of venous collaterals strangling together in 6 cases. In 15 cases it also showed the route and distribution of multiple hepatofugal venous collaterals. CONCLUSION: 3D-DCE MRA can provide adequate information about the site and severity of CTPA.


Assuntos
Hemangioma Cavernoso/diagnóstico , Imageamento Tridimensional , Angiografia por Ressonância Magnética , Veia Porta/patologia , Trombose Venosa/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Meios de Contraste , Feminino , Hemangioma Cavernoso/etiologia , Hemangioma Cavernoso/patologia , Humanos , Processamento de Imagem Assistida por Computador , Neoplasias Hepáticas/complicações , Angiografia por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Trombose Venosa/etiologia , Trombose Venosa/patologia
2.
Zhejiang Da Xue Xue Bao Yi Xue Ban ; 35(5): 551-4, 2006 09.
Artigo em Zh | MEDLINE | ID: mdl-17063551

RESUMO

OBJECTIVE: To assess the value of X-ray stereotactic core needle biopsy (SCNB) in diagnosis of mammographic minimal lesions. METHODS: Thirty-one cases with suspicious malignant lesions detected by mammography underwent breast biopsy using computer-assisted stereotactic system with spring-loaded biopsy guns and 16G core needles. All specimens underwent histopathologic examination. Surgical operations were performed in 24 cases after SCNB, and pathological findings of SCNB specimens were compared with those of surgical biopsy. RESULT: Among 24 cases with surgical excision, 8 cases (33.3%) were confirmed as breast carcinoma, and the other 16 cases (66.7%) was benign breast lesions. The consistency rate of diagnosis with two methods was 87.5%. CONCLUSION: As a safe and effective diagnostic method, SCNB is preferred approach to differentiate between malignant and benign diseases of minimal breast lesions before surgery.


Assuntos
Doenças Mamárias/patologia , Mama/patologia , Mamografia , Adulto , Idoso , Biópsia por Agulha/métodos , Doenças Mamárias/diagnóstico por imagem , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Feminino , Humanos , Pessoa de Meia-Idade
3.
Zhejiang Da Xue Xue Bao Yi Xue Ban ; 35(3): 323-6, 2006 05.
Artigo em Zh | MEDLINE | ID: mdl-16764038

RESUMO

OBJECTIVE: To investigate the imaging characteristics of abdominal solitary fibrous tumor (SFT) with its pathological features. METHODS: Six cases of abdominal solitary fibrous tumors were studied using X-ray, CT, MRI examination as well as histopathological and immunohistochemical techniques. RESULT: Contrast enhanced CT showed early intense enhancement as a result of the rich vascularization. On MRI the parenchyma of the tumors showed hypointensity on T1WI, T2WI and some tumors might manifest areas of hyperintensity on T2WI due to myxoid degeneration or hemorrhage. Microscopically, SFT was composed of spindle cells with various patterns and these spindle cells were CD34 positive on immunohistochemistry. CONCLUSION: SFT is a soft tissue tumor originating from mesenchyma. Abdominal SFT shows variable appearance and enhancement pattern on CT and MRI according to tumor cells distribution and myxoid degeneration or hemorrhage within the tumor pathologically.


Assuntos
Fibroma/diagnóstico , Imageamento por Ressonância Magnética , Neoplasias Peritoneais/diagnóstico , Adulto , Idoso , Feminino , Fibroma/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Peritoneais/patologia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
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