Since returning from the Surface of Tau Ceti 5, patient has experienced numerous novel phenomena, evidenced by inflammatory nodular growth and the presence of a large wormlike parasite. This morning, the parasite penetrated the subject's chest... from the inside... and attached one end of itself to the subject's forehead. If I remove it, I could kill the kid. If I leave it... Final Diagnosis: beats the hell out me. I'd love to refer this to Madorsky at CDC, but unfortunately, he's 67 trillion miles away.