Atypical CT findings of metastatic lung tumor

Diagnosis of metastatic lung tumors is relatively easy due to the clinical and imaging features in most cases. However, atypical imaging findings of metastatic lung tumors are observed occasionally, which make diagnosis difficult. For a correct diagnosis, it is necessary to determine the nature of unusual imaging features and to understand the underlying histopathological change. Here we review the atypical imaging features with the pathologic correlation of metastatic lung tumors.