Figure 2
From: Mixed epithelial and stromal tumor of the kidney: report of eight cases and literature review
Representative pathological findings of mixed epithelial and stromal tumor of the kidney. (A) MESTK showed characteristic biphasic components, including tubules embedded in the spindle cell stroma. (B) The mesenchymal component resembled that of densely cellular ovarian stroma. (C) The ovarian-like stroma underwent myxoid change. (D) Smooth muscle marker such as desmin was strongly positive in the stroma of MESTK. (E) The stroma showed a positive reaction against vimentin. (F) Progesterone receptors were seen in the nuclei of the stromal cells of MESTK.