Leah Still officially declared in remission; Devon offers heartfelt comments

Last week Devon Still announced on Instagram that the doctors found there was no active cancer left in Leah Still's body, but that the father-daughter duo still had to wait for her MRI and bone biopsy results. Well, those results have come in and after 296 days of fighting a hard fight, Leah is officially in remission.

June 2, 2014 and March 25, 2015 are days I will remember for the rest of my life. As everyone probably knows, June 2nd was the day doctors walked into the waiting room to tell me my daughter had cancer. It was the most devastating day of my life. March 25th , however, is feeling like the best day of my life. Today we received news from Leah's oncologist that her cancer, stage four neuroblastoma, is officially in remission! After 296 days of day dreaming about what it would feel like to hear the doctors say my daughter is in remission, I finally know the feeling. Funny thing is there is really no way of describing it because I never knew this feeling existed. When I look at my daughter all I can do is smile and hug her. It was not easy but every day, and every treatment Leah fought like hell and kicked cancers butt! I'm so proud and blessed to call her my daughter. She has made an impact on me and on the world, at the age of four, that I can only wish to make in a lifetime. Thank you to my family and friends for the support through all those tough days. Thank you to everyone who has sent a letter to give Leah and our family motivation to keep fighting, a toy that helped Leah get through her days in the hospital, and more importantly a prayer that helped God hear our cries for healing. Thank you to the doctors at CHOP for putting together the best plan of action for my daughter. Thank you to Child Life members Sarah, Laura, and Lindsey for really turning what could be a scary place into a place where Leah would enjoy going because she knew she would have fun with you guys. Thank you to the Bengals for taking on my situation and standing by me and my family and for helping to raise money to fight pediatric cancer. To every media outlet and persons that helped raise much needed awareness, thank you. Leah is not done with treatments yet. She still needs more to make sure the cancer cells do not return and to build back up her immune system and other damage from the chemo but I know my little warrior will get through it! #FistBump #LeahStrong #BeatCancer #TheFightAgainstChildhoodCancerIsFarFromOver #ThrowingTheBiggestKidPartyEver #WaitForIt

A photo posted by Devon Still (@man_of_still75) on Mar 25, 2015 at 1:29pm PDT

June 2, 2014 and March 25, 2015 are days I will remember for the rest of my life. As everyone probably knows, June 2nd was the day doctors walked into the waiting room to tell me my daughter had cancer. It was the most devastating day of my life. March 25th , however, is feeling like the best day of my life. Today we received news from Leah's oncologist that her cancer, stage four neuroblastoma, is officially in remission! After 296 days of day dreaming about what it would feel like to hear the doctors say my daughter is in remission, I finally know the feeling. Funny thing is there is really no way of describing it because I never knew this feeling existed. When I look at my daughter all I can do is smile and hug her. It was not easy but every day, and every treatment Leah fought like hell and kicked cancers butt! I'm so proud and blessed to call her my daughter. She has made an impact on me and on the world, at the age of four, that I can only wish to make in a lifetime. Thank you to my family and friends for the support through all those tough days. Thank you to everyone who has sent a letter to give Leah and our family motivation to keep fighting, a toy that helped Leah get through her days in the hospital, and more importantly a prayer that helped God hear our cries for healing. Thank you to the doctors at CHOP for putting together the best plan of action for my daughter. Thank you to Child Life members Sarah, Laura, and Lindsey for really turning what could be a scary place into a place where Leah would enjoy going because she knew she would have fun with you guys. Thank you to the Bengals for taking on my situation and standing by me and my family and for helping to raise money to fight pediatric cancer. To every media outlet and persons that helped raise much needed awareness, thank you. Leah is not done with treatments yet. She still needs more to make sure the cancer cells do not return and to build back up her immune system and other damage from the chemo but I know my little warrior will get through it! #FistBump #LeahStrong #BeatCancer #TheFightAgainstChildhoodCancerIsFarFromOver #ThrowingTheBiggestKidPartyEver #WaitForIt

We're thrilled for the four-year-old and her dad, who resigned with the Bengals last week.

According to cancer.org, to qualify as being in remission, "the reduction in the size of the tumor must last for at least one month. There’s no way to tell how long a remission will last, so remission [doesn't mean] the cancer definitely has been cured."

As Devon said, Leah is not done yet and will need to undergo more treatment to build back up her immune system and ensure the cancer cells do not return.