Liposarcoma mixoide de mama. A propósito de un caso y revisión de la literatura

A 40 year old woman presented with a palpable swelling in her right breast. She had no relevant past medical history. Mammography revealed a 34 mm, well-defined heterogeneous nodular mass in the axillary tail of the upper external quadrant of the right breast. An ultrasound guided biopsy was performed, in which a mesenchymal tumour was found, with myxoid stroma, a plexiform capillary pattern and scattered cells that resembled lipoblasts. Subsequently, the tumour was excised. Macroscopy showed regular margins on the cut surface and a myxoid lesion. Microscopically the lesion was diagnosed as myxoid liposarcoma. The clinico-pathological features of the case are described and the pertinent literature discussed.