Mesenteric malignant lymphoma detected with routine color Doppler ultrasonography.

This report concerns a case of primary mesenteric malignant lymphoma detected with routine color Doppler ultrasonography. When a 44-year-old man underwent a first-time medical checkup, ultrasonographic imaging and computed tomography showed the presence of a large tumor measuring about 8 cm in transverse diameter. Color Doppler ultrasonography identified the characteristic vessel structure of a nodal lesion, namely, a hilar vessel, a curved section of the central vessel together with peripheral branches, and focal absence of perfusion in a hypoechoic imaging of the left periumbilical area. These findings contributed to the diagnosis of a malignant lymphoma and the surgical treatment of the tumor was successful.