Breast cancer metastasis presenting as ethmoiditis

Metastasis from primary tumours to the paranasal sinuses is infrequent. We report an unusual case of breast cancer metastasis presenting as ethmoiditi s in MRI. MRI changes are unspecific and sometimes inflammatory lesions can not be distinguished from neoplastic lesions. Inflammatory changes in the paranasal sinuses are also frequently noted on MRT even in normal persons w ithout disease. A high index of metastasis suspicion in any patient with br east cancer must be kept in mind.