[Lobular carcinoma of the breast in magnetic resonance tomography. A case report].

The invasive lobular carcinoma of the breast, the incidence of which is 10-15 per cent, occupies a special position in respect of histological differentiation and biological behaviour. No MR signal enhancement was seen after contrast medium application in the tumoral tissue in the case described here, namely, an invasive lobular carcinoma of the breast of 2 cm size. Hence, it is not always possible to exclude with absolute certainty the presence especially of an invasive lobular carcinoma of the breast in the absence of contrast medium uptake.