Most neck lumps are benign, but cancer is a possible cause. For adults, the chance that a neck lump is cancerous increases after the age of 50, according to the Cleveland Clinic. Lifestyle choices, such as smoking and drinking, can also have an impact.
Moreover, there are several theories whether or not Dr Wells in the one who killed Barry's mother. Movie pilot speculates that even though Dr Wells is the Reverse Flash, he isn't the one who killed Nora Allen.
The Flash just blew up the entire DC Universe in the Season 2 finale. Once again, Barry (Grant Gustin) returned to the night his mother, Nora (Michelle Harrison), died, only this time he didn't back down. Barry stopped Reverse-Flash (Matt Letscher) and saved Nora's life, all while Season 1 Barry looked on.