204082.fig.001a
(a)
204082.fig.001b
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204082.fig.001c
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204082.fig.001d
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204082.fig.001e
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204082.fig.001f
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Figure 1: Endometrial stromal hyperplasia. (a) An endometrial fragment composed exclusively of small uniform spindle cells with scanty cytoplasm and ill-defined cell borders (H and E ×20). (b) The corresponding endometrial polyp showing a similar histological appearance (H and E ×10). (c) Endometrial stromal hyperplasia forming a small polyp composed of dense endometrial stroma with thick-walled vessels of the arteriolar type (H and E ×4). (d) The intraendometrial lesion of the same case at a higher magnification (H and E ×40). (e) Section from the polyp formed of spindle-shaped stromal cells and thick-walled vessels of the arteriolar type (H and E ×20). (f) Immunohistochemical expression of ER of the same case (×20).