**Question:** According to Strasberg classification, lateral common bile duct (CBD) injuries are classified as:

**Core Concept:** Strasberg classification is a system used to categorize injuries to the extrahepatic bile ducts, specifically for lateral injuries. This classification helps guide treatment and prognosis.

**Why the Correct Answer is Right:** In the Strasberg classification, lateral CBD injuries are classified into five stages, based on the extent of the injury and the involvement of the CBD branches:

A. E1: Involving the left hepatic duct or the right hepatic duct
B. E2: Involving both hepatic ducts, with preservation of the cystic duct and artery
C. E3: Involving both hepatic ducts with injury to the cystic duct and artery
D. E4: Involving both hepatic ducts, with injury to the cystic duct and artery, with or without involvement of the common hepatic duct

Strasberg classification is important as it helps in determining the appropriate surgical approach for treating lateral CBD injuries.

**Why Each Wrong Option is Incorrect:**

A. The correct answer (D) includes both hepatic ducts, while option A only involves the left or right hepatic duct, which is not considered lateral CBD injury.

B. Option B involves both hepatic ducts but preserves the cystic duct and artery, while option D includes injury to these structures as well, making it the correct answer.

C. Option C involves both hepatic ducts and cystic duct and artery injury, but does not include involvement of the common hepatic duct, making it incorrect.

**Clinical Pearl:**

Understanding Strasberg classification allows physicians to accurately diagnose and treat lateral common bile duct injuries, ensuring appropriate management and improving patient outcomes. Familiarity with this classification system is crucial for treating bile duct injuries in clinical practice.

**Correct Answer:** D. Involving both hepatic ducts, with injury to the cystic duct and artery, with or without involvement of the common hepatic duct

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In summary, Strasberg classification classifies lateral common bile duct injuries into five stages based on the extent of duct involvement and the presence of cystic duct and artery injury. Option D correctly represents lateral CBD injuries by involving both hepatic ducts, cystic duct, and artery, with or without involvement of the common hepatic duct. This classification system helps physicians determine the appropriate surgical approach for treating these injuries, ultimately improving patient outcomes.