1. Lymphatic spread of endometriosis to pelvic sentinel lymph nodes: a prospective clinical study 
Clemens B. Tempfer, M.D., M.B.A., René Wenzl, M.D., M.B.A., Reinhard Horvat, M.D., Christoph Grimm, M.D., Stephan Polterauer, M.D., Bernd Buerkle, M.D., Alexander Reinthaller, M.D., Johannes C. Huber, M.D., Ph.D. 
Fertility and Sterility 
Volume 96, Issue 3, Pages (September 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Endometriotic lesion in a pelvic sentinel lymph node in a woman with endometriosis, demonstrating endometrioid glands with epithelium (white arrow) and stroma (black arrow). Endometriotic epithelial and stromal cells are strongly positive for estrogen receptor. Magnification ×40.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Endometriotic lesion in a pelvic sentinel lymph node in a woman with endometriosis, demonstrating cytokeratin-positive endometriotic epithelial cells (white arrow). Magnification ×100.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

4. Figure 3
(A) Isolated endometriotic-like cells with positive estrogen receptor staining (white arrow), and (B) progesterone receptor staining (white arrow) in a peripheral sinus of a pelvic sentinel lymph node in a woman with endometriosis. Magnification: ×100.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions