Hmmm, I hadn't seen he wrote on his homepage, he sounds a bit more cautious there:
"I am expecting the results next week. But I sincerely hope that everything is fine and that there will be no long-term setbacks... I reckon that it will be all systems go in San José and Mephis which would be very convenient as I can meet up with two doctors with whom I have experienced the most excellent treatment in the past. Keep your fingers crossed for me that it's nothing serious!"
The other article is pretty categorical and quotes him saying that it's nothing serious.