Gastrointestinal

HBV serology interpretation · the 5 scenarios, the window period trap, and the pattern-matching game that makes it click.

Two cholestatic liver diseases that boards love to confuse. Split-screen comparison, pathophysiology chains, sensory blocks, drag-drop sorting, and the histology traps that cost you points.

HCC risk factors, AFP as the tumor marker, and the vinyl chloride trap: why one toxin causes angiosarcoma instead of HCC.

Why the liver is the #1 destination for GI cancer. Portal venous drainage, gross pathology, and the "magnet" effect that makes it the most common site for mets.

The two faces of IBD. Side-by-side comparison, drag-drop sorting, decision tree, elimination game, and the extraintestinal manifestations that show up on boards.

Acute pancreatitis: why kids and adults get it differently, the saponification cycle that keeps it going, and the calcium trap that makes it worse.

You suppressed the acid. Now gastrin is throwing a party. Interactive stomach anatomy map, feedback loop simulator (toggle PPI on/off), elimination game for elevated gastrin causes, and the Zollinger-Ellison differential that boards love.

The rash around the mouth, the hair that quit, the food that stopped tasting like anything. Interactive body map, deficiency elimination game, sensory styling, and the four differentials boards use to trap you.