In case of choledochal cyst, bile diversion into the small intestine is not done because of the risk of –
**Core Concept**
Choledochal cysts are congenital anomalies of the bile ducts, leading to bile stasis and increased risk of bile duct cancer. Bile diversion into the small intestine is a surgical procedure to alleviate symptoms and prevent complications.
**Why the Correct Answer is Right**
The primary concern with diverting bile into the small intestine in the case of choledochal cysts is the risk of **malignant transformation** of the bile duct epithelium. The abnormal bile duct lining is already at an increased risk of cancer due to chronic stasis and inflammation. By bypassing the normal bile duct anatomy, the risk of malignant transformation and **adenocarcinoma** development is significantly increased.
**Why Each Wrong Option is Incorrect**
**Option A:** Pancreatitis - While pancreatitis is a potential complication of surgical intervention for choledochal cysts, it is not the primary reason for avoiding bile diversion into the small intestine.
**Option B:** Cholangitis - Cholangitis is a potential complication of bile duct obstruction, but it is not directly related to the risk of malignant transformation associated with bile diversion.
**Option C:** Intestinal obstruction - Intestinal obstruction is a potential complication of surgical procedures involving the small intestine, but it is not the primary concern in the context of choledochal cysts and bile diversion.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that the primary goal of surgical management of choledochal cysts is to **remove the cyst and the affected segment of the bile duct**, rather than simply diverting bile into the small intestine.
**Correct Answer: D. Malignant transformation.**