Doctors struggle to diagnose man's mysterious illness: Part 2
A lymph node biopsy confirmed that Jonathan Koch had hemophagocytic lymphohistiocytosis (HLH).
September 3, 2017
Top Stories
ABC News Live Presents
A variety of news and talk shows featuring our flagship programming.
21:27
Daddy Yankee: A Higher Note
- Nov 20, 2025
24:43
Gut Check: The Foods We Eat
- Nov 19, 2025
22:59
All Access with Linsey Davis: Andrew Cuomo
- Oct 30, 2025
ABC News Specials on
