300 Longwood Avenue Boston, MA 02115 (617) 355-6000 Clinical Services (Pulmonary Hypertension Program): Patient Story Shannon's story When Shannon O'Donnell arrived at Children's in 2001, her condition was severe and life-threatening. Today, she is full of life and has a much improved prognosis thanks to doctors at Children's. Watch Out! Shannon O'Donnell is now a yellow belt in karate. Maggie's Double-Lung Transplant What started as a routine checkup in Virginia was the beginning of a life-altering journey for Maggie Mansfield. The information on this website should not be taken as medical advice, which can only be given to you by your personal health care professional. Copyright © Children's Hospital Boston. All rights reserved.