STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Endometrial stromal sarcoma, light micrograph of a section of uterus. Endometrial stromal sarcoma (ESS) is a rare malignant tumor of the endometrium, occurring in the age group of 40â50 years. ESS is a malignant subtype of endometrial stromal tumor arising from the stroma (connective tissue) of the endometrium rather than the glands (purple). These cancers are rare, representing less than 1% of all uterine cancers and are generally low-grade. Magnification: x 150 when printed at 10 centimetres wide. Human tissue.
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