Diagnosis of dynamic enhanced MSCT in hepatic lymphoma
WU Jian-ming1, MA Zhou-peng1, ZHANG Shun-zhuang1, ZHOU Jian-jun2
1.Department of Radiology, Affiliated Cixi Hospital of Wenzhou Medical College, Cixi Zhejiang 315300, China;2.Department of Radiology, Affiliated Zhongshan Hospital of Fudan University, Shanghai 200032, China
Abstract：Objective: To analyse the multi-slice spiral CT(MSCT) appearances of hepatic lymphoma, and improve its diagnostic accuracy. Methods: Eight cases of MSCT findings with hepatic lymphoma were reviewed which were proved by pathology or clinical follow up. Results: There were 6 cases of secondary lymphoma, and 2 cases of primary lymphoma. In the 8 cases 3 cases with single focus, 5 cases with multi-foci, in 6 cases the lesion located near the branch of portal vein or converge area, in 2 cases the lesion located in the border of liver. The foci showed low density on plain scan, CT value were 18.8~32.1HU; in 3 cases the lesion appeared as round or oval, 4 cases were multi-irregular tumors, and 1 case appeared as diffused with multi-speckled nodules in left lobe of liver. 4 cases tumors had clear edge, the other 4 cases with dim edge. 2 cases with local dilation of bile duct. In contrast enhancement, 6 cases intensified slightly in arterial phase and the intensity was lower than normal tissue, 2 cases intensified obviously in arterial phase, the density was higher than normal tissue, 8 cases with continued enhancement in portal vein-phase, but were fainter than normal tissue, in delayed phase, the enhancement of tumor decreased, blood vessels were seen within the lesion in 6 cases as “blood vessel floating-sign”, the vessel was compressed. Six cases had enlarged retroperitoneal lymph-nodes with different sizes, slightly to moderate homogeneous enhancement, and without obvious necrosis. Calcification and necrosis were not be seen in all tumors. Conclusion: Hepatic lymphoma can be single or multiple tumor, located near the branch of portal vein or its supplied area, without obvious necrosis, CT showed homogeneous density on plain scan, and with slightly to moderate homogeneous enhancement. Some tumors showed “blood vessel floating-sign”. MSCT can show the position, number, shape of tumor and the blood supply clearly and the change of adjacent tissue and organ, is useful for the diagnosis of hepatic lymphoma.
2011, Vol. 22 
