Dedifferentiated Leiomyosarcoma of the Uterus with Heterologous Elements: A Potential Diagnostic Pitfall
Figure 1
(a) Uterine tumor, areas of transition between the high-grade component (lower right field) and the “leiomyoma-like” areas (upper left field) (hematoxylin and eosin, original magnification ×100). (b) Uterine tumor, low-grade areas reminiscent of leiomyoma (hematoxylin and eosin, original magnification ×200). (c) Uterine tumor, High grade areas (hematoxylin and eosin, original magnification ×200). (d) Extrauterine tumor (hematoxylin and eosin, original magnification ×200). (e) Extrauterine tumor, showing osteoid formation (hematoxylin and eosin, original magnification ×200). (f) Extrauterine tumor, showing scattered cells with expression of the estrogen receptor (immunoperoxidase, original magnification ×200).
