part_of part of part of has_disease_location endometrium endometrial neoplasm Endometrial Stromal Nodule NCIt:C4262 A non-infiltrating, benign mesenchymal neoplasm arising from the uterine corpus. It is characterized by the presence of neoplastic cells that resemble the cells of the proliferative phase of endometrial stroma and numerous thin-walled small vessels. It usually presents with abnormal uterine bleeding and menorrhagia.