Eight-year-old Luis Carranza, whose mother slipped him from Mexico into the United States for live-saving cancer treatment, has died of leukemia after the same treatment that once offered him remission attacked his central nervous system, and caused seizures and terminal, irreversible brain damage.

Luis' story, first featured in a September 18 post, is a powerful one, riddled with struggle and hardship and love and commitment.

The story began less than two years ago when Guadalupe Carranza smuggled her young, sick son into the United States for treatment. Luis was welcomed into a Texas hospital and was showered with an abundance of love from staff and volunteers. Guadalupe did not receive the same warm welcome, however, and was deported back to Mexico. And while she battled to return to her son's bedside, Guadalupe was met with continued defeat -- until her son fell into a coma and border and consulate officials allowed the mother to cross back into the United States where she stayed until her son passed away on Thursday at his grandparent's house in El Paso.

Guadalupe had been with her son since May 8, 2006. And an attorney involved in Luis' case says he believes the boy, despite his serious condition, could sense his mother's presence. And everyone involved believes the boy, who was clearly suffering, is now in a much better place.

Luis Carranza is just eight years old. And he is just a few years -- or perhaps a few months -- away from dying as a result of a weakened immune system due to aggressive treatment for leukemia. The same treatment that at one time brought remission for this boy also attacked his central nervous system, caused seizures, brought on terminal and irreversible brain damage, and eventually sent him into a vegetative state. Luis has traveled a rough road -- and so has his mother who illegally slipped him across the Mexican border into the United States in hopes of treatment to save her young son's life.

Guadalupe Carranza did find salvation for her son in a Texas hospital and for more than one year, Luis received chemotherapy and radiation -- and loads of love from staff and volunteers who helped care for him. Guadalupe was not always there for her son, though, because after locating helpful health care and social services, she was deported to Mexico. She tried to return on many occasions and even received assistance from doctors, nurses, social workers, and attorneys who worked to find a legal way to unite Guadalupe and Luis. But not until Luis fell into a coma did efforts pay off.

After negotiation with border and consulate officials, Guadalupe was granted a humanitarian parole visa and legally crossed into the United States on May 8. The visa allowed her 60 days -- but officials agreed to let her stay until Luis passes away. And so she stays -- by her son's bedside where he rests peacefully in a place that gave him a chance at life. A chance his mother says he never would have had in Mexico.