Computed-tomographic features of invasive lobular carcinoma.

We retrospectively analyzed contrast-enhanced computed tomography (CE-CT) findings in 18 patients with pure invasive lobular carcinoma (ILC). The features were divided into five types: an ill-defined and inhomogeneous mass with or without regional heterogeneous enhancement, a spiculated inhomogenous mass, a regional heterogeneous enhancement, and a normal finding. The correlation between tumor size on pathological examination was better with size estimation on CE-CT than that on mammography and sonography. CE-CT may provide additional information on the characteristics and extent of this carcinoma.