1. Umbilical endometriosis elucidates cause of recurrent pneumothorax
Christen Mowad, MD, Cassondra Andreychik, BA, Timothy Murphy, MD 
Journal of the American Academy of Dermatology 
Volume 71, Issue 3, Pages e79-e80 (September 2014)
DOI: /j.jaad
Copyright © 2014 American Academy of Dermatology, Inc. Terms and Conditions

2. Fig 1
Histology of endometriosis in umbilical papule demonstrates erythrocytes inside endometrial glands, endometrial stroma, and hemosiderin in surrounding bed of fibrous tissue consistent with endometriosis (arrow). (Hematoxylin-eosin stain; original magnification ×100.)
Journal of the American Academy of Dermatology  , e79-e80DOI: ( /j.jaad )
Copyright © 2014 American Academy of Dermatology, Inc. Terms and Conditions

3. Fig 2
Endometrial deposits on the diaphragm appear as hyperpigmented lesions on thoracoscopy (arrows).
Journal of the American Academy of Dermatology  , e79-e80DOI: ( /j.jaad )
Copyright © 2014 American Academy of Dermatology, Inc. Terms and Conditions