Would you offer adjuvant radiation in a woman with solitary plasmacytoma of the breast who underwent lumpectomy with clear surgical margins?  

Postoperative radiotherapy for extraosseous solitary plasmacytoma is often offered, since many of these tumors arise in areas where wide surgical margins cannot be obtained and the risk of recurrence is high, one common scenario (as far as one can call extraosseous plasmacytomas "common“) are ...