Gallstone

3 things to know first

1. Many gallstones cause no symptoms. An incidental stone does not automatically need treatment.
2. Location matters. A stone in a bile duct can be more urgent than one sitting quietly in the gallbladder.
3. Symptoms change the picture. Persistent pain, fever, or jaundice needs medical review.

What it is

Gallstones are hardened deposits that form from substances in bile. They usually form inside the gallbladder and can vary in size and number. A stone may remain in the gallbladder or move into a bile duct, where it can block normal bile flow.

Why it appears on your report

Abdominal ultrasound is commonly used to find gallstones. CT may show some stones but can miss others; MRI with MRCP can help examine the bile ducts when needed. A report may mention the stone's location, whether the gallbladder wall is thickened, or whether the bile ducts are enlarged.

How serious is it

An asymptomatic gallbladder stone is often observed. A stone that blocks a duct may cause attacks of pain and sometimes inflammation or infection. The scan must be interpreted with symptoms, examination, and blood tests.

When to seek care urgently

Seek prompt care for upper abdominal pain lasting several hours, especially with fever, repeated vomiting, yellow skin or eyes, dark urine, or pale stools.

What usually happens next

1. Review symptoms and the exact stone location.
2. If symptoms suggest blockage or infection, discuss blood tests and further evaluation.
3. Ask your clinician whether observation or treatment is appropriate.

A simple analogy

The gallbladder is a small storage pouch connected to drainage tubes. A stone resting in the pouch may do nothing; one lodged in a tube can block the flow.

Further reading

• NIDDK — Symptoms and Causes of Gallstones
• RadiologyInfo — Abdominal Ultrasound