Abstract
A 56-year-old woman who had been diagnosed with bilateral mastopathy 3 years previously was referred to our hospital with a palpable mass in her left breast. The physical examination revealed a hard mass in each breast ; 1.8 cm in the right and 3.0 cm in the left. Mammographic examination and ultrasonography followed by core needle biopsy, led to a diagnosis of bilateral breast cancer. Her left breast cancer was accompanied with an EIC lesion which was demonstrated as the enhanced frame towards her nipple by computed tomography (CT). Histologically she had right scirrhous carcinoma, and in her left breast she had both scirrhous and invasive lobular carcinoma.
Bilateral breast cancer has an overall incidence of 1-20% and the incidence of synchronous bilateral breast cancer is about 1%. It is thought to be important to evaluate the contra-lateral breast in patients with primary operable breast cancer.
