OBJETIVO: Descrever as principais caracteristicas de imagem do linfoma nao-Hodgkin apresentando-se comomassa hepatica unica. MATERIAIS E METODOS: Realizamos estudo retrospectivo mediante analise de ca-sos de pacientes com massa hepatica unica aos exames de ultrassonografia, tomografia computadorizada eressonância magnetica, com diagnostico histologico de linfoma nao-Hodgkin. Esses exames foram analisa-dos por dois examinadores em consenso. RESULTADOS: Identificamos tres pacientes, todos do sexo mas-culino, na quinta decada de vida, com quadro clinico inespecifico e que apresentavam massa hepatica unicae com diagnostico de linfoma nao-Hodgkin. Na ultrassonografia a lesao hepatica apresentava-se como massacom aspecto “em alvo” nos tres casos estudados. Na tomografia computadorizada observou-se massa hipo-densa e heterogenea, com realce anelar em todos os casos. Na ressonância magnetica as lesoes apresenta-vam-se heterogeneas, hipointensas em T1 e hiperintensas em T2, e tambem com realce anelar apos a inje-cao do contraste. Nenhum paciente apresentava linfonodomegalia ou comprometimento de outras viscerassolidas no momento do diagnostico. CONCLUSAO: Na presenca de massa hepatica solitaria e com aspecto“em alvo” deve-se considerar, entre as hipoteses, o diagnostico de linfoma.Unitermos: Linfoma; Figado; Ultrassonografia; Tomografia computadorizada; Imagem por ressonância mag-netica.OBJECTIVE: To describe the main imaging findings of non-Hodgkin’s lymphoma presenting as a single livermass. MATERIALS AND METHODS: A retrospective study was developed with analysis of cases where asingle liver mass was observed at ultrasonography, computed tomography and magnetic resonance imaging,and histologically diagnosed as non-Hodgkin’s lymphoma. The studies were reviewed by two observers inconsensus. RESULTS: Three male patients in the fifth decade of life, with non-specific clinical manifestationsand single liver mass diagnosed as non-Hodgkin’s lymphoma were identified. A hepatic lesion with targetsign was observed at ultrasonography in all of the cases. At computed tomography, all the patients presenteda heterogeneous, hypodense mass with a ring enhancement. At magnetic resonance imaging, the lesionswere heterogeneous and hypointense on T1-weighted and hyperintense on T2-weighted images. Additionally,a ring enhancement was observed in all of the cases after contrast injection. At the moment of the diagnosis,none of the patients presented lymphadenomegaly or involvement of other solid viscera. CONCLUSION: Thediagnosis of hepatic lymphoma should be considered in the presence of a ring-enhanced single liver mass.Keywords: Lymphoma; Liver; Ultrasonography; Computed tomography; Magnetic resonance imaging.