Causes of Hemobilia All/Except –
**Core Concept**
Hemobilia refers to the presence of blood in the biliary tract, which can be caused by various conditions affecting the liver, gallbladder, bile ducts, or the vasculature surrounding these structures. The causes of hemobilia can be broadly classified into traumatic and non-traumatic etiologies.
**Why the Correct Answer is Right**
Hemobilia can result from traumatic causes such as bile duct injuries during cholecystectomy, liver lacerations, or penetrating trauma to the abdomen. Non-traumatic causes include liver diseases like hepatocellular carcinoma, liver hemangiomas, or vascular malformations. Additionally, conditions affecting the bile ducts, such as choledocholithiasis, cholangiocarcinoma, or primary sclerosing cholangitis, can also lead to hemobilia.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is not a recognized cause of hemobilia. However, **portal hypertension** can lead to hemobilia by causing bleeding from esophageal varices or gastric varices, which are complications of liver cirrhosis.
* **Option B:** This option is incorrect because **pancreatitis** is not a direct cause of hemobilia, although pancreatitis can cause bile duct obstruction or pancreato-biliary fistula, which may lead to hemobilia.
* **Option C:** This option is incorrect because **gallstones** are a common cause of biliary colic and cholecystitis but are not typically associated with hemobilia.
**Clinical Pearl / High-Yield Fact**
It is essential to consider hemobilia as a possible diagnosis in patients presenting with melena or hematochezia after a recent episode of biliary colic or abdominal trauma.
**Correct Answer: D. Gallstones**