Danielle Fishel, known for her role of Topanga Lawrence on the sitcom “Boy Meets World,” has revealed she's been diagnosed with early stage breast cancer. The 43 year-old credits her annual mammogram exam as the reason for catching it early. NBC’s Emilie Ikeda reports for TODAY. » Subscribe to TODAY: youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TODAY on Instagram: instagram.com/todayshow » Stream TODAY All Day: today.com/allday About: TODAY All Day is a...