Astavalence

PathoSchema® by Astavalence · Biliary Stone Migration Simulator

PathoSchema® by Astavalence

Biliary Stone Migration Simulator

Stone at gallbladder neck causing acute cholecystitis

Move the stone

Slide the stone through the biliary tree and watch the disease change in real time

GB gallbladder neck

Stone position Gallbladder neck or cystic duct

Current mechanism

A stone impacted at the gallbladder neck blocks cystic drainage. The gallbladder distends, the wall inflames and acute cholecystitis follows.

What you are seeing

Move the stone to a new site. The anatomy, symptoms, bloods and imaging clues update instantly so students can understand why the same stone causes different diseases in different locations.

Current syndrome

A model

Current state

Acute cholecystitis

The location defines the disease. Here the stone is stuck at the gallbladder neck or cystic duct, so the gallbladder becomes trapped, distended and inflamed.

Symptoms and signs

Bloods and imaging

Affected structures

Hotspot focus

Priority management

Core rule

Same stone. Different location. Different syndrome. Gallbladder neck or cystic duct obstruction gives acute cholecystitis. Common bile duct obstruction with infection gives Charcot triad. Distal obstruction at the ampulla can also obstruct pancreatic drainage and trigger acute pancreatitis.

Reset

Start by understanding acute cholecystitis. Then move the stone distally to see why jaundice and pancreatitis appear.

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