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. 2015 Nov 18;15:161. doi: 10.1186/s12876-015-0391-2

Fig. 2.

Fig. 2

a Microscopically the tumor is characterized by a predominant cystic lesion composed of a columnar mucinous epithelium with atypical nuclei, numerous mitoses and stromal invasion. An ovarian-type stroma is absent (hematoxylin/eosin staining, 20x). b The solid area contains mononuclear spindle-shaped cells, pleomorphic giant cells and scattered multinucleated osteoclast-like giant cells (hematoxylin/eosin staining, 20x)