Objective To observe the value of contrast-enhanced ultrasound(CEUS)for diagnosing splenic lymphoma.Methods Eighteen patients with pathologically confirmed splenic lymphoma were retrospectively collected.The routine ultrasound and CEUS manifestations of lesions were observed,and the diagnostic accuracy of these two methods for diagnosing splenic lymphoma were compared.Results Among 18 cases,conventional ultrasound showed single lesion in 8(8/18,44.44％)and multiple lesions in 10 cases(10/18,55.56％).The maximum diameter of lesions was(5.43±2.03)cm.For the largest lesion(target lesion)in 18 cases,5(5/18,27.78％)were found with very low echo,11(11/18,61.11％)with low echo and 2(2/18,11.11％)with mixed echo.The internal echo was uneven in 10 lesions(10/18,55.56％)while uniform in 8 lesions(8/18,44.44％),8(8/18,44.44％)shaped regularly but 10(10/18,55.56％)irregularly,15(15/18,83.33％)with clear and 3(3/18,16.67％)with unclear boundaries.CDFI showed blood flow signals in 10(10/18,55.56％)but not in 8 lesions(8/18,44.44％).During CEUS of 18 target lesions,no enhancement was detected in 1 lesion(1/18,5.56％),peripheral to central enhancement,central to peripheral enhancement and synchronous enhancement was observed in 12(12/18,66.67％),2(2/18,11.11％)and 3 lesions(3/18,16.67％),respectively,which at the peak mainly presented as low(8/18,44.44％)or high(7/18,38.89％)enhancement,while no enhancement or equal enhancement was noticed in 1(1/18,5.56％)and 2(2/18,11.11％)lesions,respectively.Uniform and uneven distribution of contrast agents was found in 5(5/18,27.78％)and 12(12/18,66.67％)lesions,respectively,while 1 lesion(1/18,5.56％)without distribution of contrast agents.Annular and dendritic enhancement in peripheral area was observed in 7(7/18,38.89％)and 5 lesions(5/18,27.78％),while nodular enhancement(3/18,16.67％)or no enhancement(3/18,16.67％)was noticed each in 3 lesions.The scope enlarged after enhancement in 1 lesion(1/18,5.56％),while 17 lesions(17/18,94.44％)did not increase significantly.In the late stage of enhancement,16 lesions(16/18,88.89％)showed low enhancement,while 2(2/18 11.11％)showed no enhancement.Among 18 target lesions,CEUS showed blood supply in 17 lesions(17/18,94.44％),while no blood supply was found in 1 lesion(1/18,5.56％).CEUS correctly diagnosed 11 cases of splenic lymphoma,with diagnostic accuracy of 61.11％(11/18),higher than that of conventional ultrasound([4/18,22.22％],P=0.020).Conclusion CEUS had important clinical value for diagnosing splenic lymphoma.

Objective To observe the value of contrast-enhanced ultrasound(CEUS)for diagnosing splenic lymphoma.Methods Eighteen patients with pathologically confirmed splenic lymphoma were retrospectively collected.The routine ultrasound and CEUS manifestations of lesions were observed,and the diagnostic accuracy of these two methods for diagnosing splenic lymphoma were compared.Results Among 18 cases,conventional ultrasound showed single lesion in 8(8/18,44.44％)and multiple lesions in 10 cases(10/18,55.56％).The maximum diameter of lesions was(5.43±2.03)cm.For the largest lesion(target lesion)in 18 cases,5(5/18,27.78％)were found with very low echo,11(11/18,61.11％)with low echo and 2(2/18,11.11％)with mixed echo.The internal echo was uneven in 10 lesions(10/18,55.56％)while uniform in 8 lesions(8/18,44.44％),8(8/18,44.44％)shaped regularly but 10(10/18,55.56％)irregularly,15(15/18,83.33％)with clear and 3(3/18,16.67％)with unclear boundaries.CDFI showed blood flow signals in 10(10/18,55.56％)but not in 8 lesions(8/18,44.44％).During CEUS of 18 target lesions,no enhancement was detected in 1 lesion(1/18,5.56％),peripheral to central enhancement,central to peripheral enhancement and synchronous enhancement was observed in 12(12/18,66.67％),2(2/18,11.11％)and 3 lesions(3/18,16.67％),respectively,which at the peak mainly presented as low(8/18,44.44％)or high(7/18,38.89％)enhancement,while no enhancement or equal enhancement was noticed in 1(1/18,5.56％)and 2(2/18,11.11％)lesions,respectively.Uniform and uneven distribution of contrast agents was found in 5(5/18,27.78％)and 12(12/18,66.67％)lesions,respectively,while 1 lesion(1/18,5.56％)without distribution of contrast agents.Annular and dendritic enhancement in peripheral area was observed in 7(7/18,38.89％)and 5 lesions(5/18,27.78％),while nodular enhancement(3/18,16.67％)or no enhancement(3/18,16.67％)was noticed each in 3 lesions.The scope enlarged after enhancement in 1 lesion(1/18,5.56％),while 17 lesions(17/18,94.44％)did not increase significantly.In the late stage of enhancement,16 lesions(16/18,88.89％)showed low enhancement,while 2(2/18 11.11％)showed no enhancement.Among 18 target lesions,CEUS showed blood supply in 17 lesions(17/18,94.44％),while no blood supply was found in 1 lesion(1/18,5.56％).CEUS correctly diagnosed 11 cases of splenic lymphoma,with diagnostic accuracy of 61.11％(11/18),higher than that of conventional ultrasound([4/18,22.22％],P=0.020).Conclusion CEUS had important clinical value for diagnosing splenic lymphoma.