Tamoxifen-Induced Endometrial Polyp

Figure 1. A 76-year-old woman with breast cancer who had been receiving adjuvant therapy with tamoxifen (20 mg per day) for 30 months presented with minimal vaginal bleeding. Color Doppler imaging revealed multiple arterial vessels with a very low resistance to flow (pulsatility index, 0.50; resistance index, 0.37) within the endometrium. The presence of a large endometrial polyp was demonstrated by the intrauterine instillation of sterile saline under ultrasonographic control (Panel A). Except for the large floating polyp (P), the endometrium (arrows) was thin and regular. M denotes the surrounding myometrium. The hysteroscopic view of the polyp, which measured 5.5 . . .