## **Core Concept**
Cholangiography via a T-tube is a procedure used to visualize the bile ducts after cholecystectomy. It involves injecting contrast material through the T-tube to check for any bile duct stones or strictures. The timing of performing this procedure is crucial for its effectiveness and safety.

## **Why the Correct Answer is Right**
The correct answer, **10-14 days**, is the recommended period after cholecystectomy when a T-tube cholangiogram is typically performed. This timing allows for the resolution of any immediate postoperative edema and reduces the risk of bile duct injury. It also helps in identifying any retained bile duct stones that might have been missed during the surgery.

## **Why Each Wrong Option is Incorrect**
- **Option A: 1-3 days** - Performing a T-tube cholangiogram too early after surgery may not be ideal due to postoperative edema, which could lead to false-negative results or increase the risk of bile duct injury.
- **Option B: 5-7 days** - Although closer to the correct range, this period might still be early for optimal results, as some postoperative changes could interfere with the interpretation of the cholangiogram.
- **Option D: 21-28 days** - Waiting too long (more than 2-3 weeks) may not be necessary for routine T-tube cholangiography, as most bile duct stones or issues would be identified earlier.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the T-tube cholangiogram should ideally be performed after the patient has recovered from the immediate effects of surgery but before hospital discharge, usually around **10-14 days** post-cholecystectomy. This timing aids in early detection and management of any bile duct issues.

## **Correct Answer: C. 10-14 days**