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**Cystic dilation of glands focally that do not have (glandular) secretions - '''key feature'''. | **Cystic dilation of glands focally that do not have (glandular) secretions - '''key feature'''. | ||
***Glands >2x normal size - usu. 3-4x normal. | ***Glands >2x normal size - usu. 3-4x normal. | ||
***Irregular shape, e.g. contour has inflection points. | ***Irregular shape, e.g. gland contour has inflection points. | ||
*+/-Stromal condensation -- balls of stromal tissue, aka "blue balls" (due to breakdown of endometrium). | *+/-Stromal condensation -- balls of stromal tissue, aka "blue balls" (due to breakdown of endometrium). | ||
DDx: | DDx: | ||
*[[Proliferative phase endometrium]]. | |||
*[[Simple endometrial hyperplasia]] without atypia - architectural atypia diffuse. | *[[Simple endometrial hyperplasia]] without atypia - architectural atypia diffuse. | ||
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