A 37-year-old is hospitalized for 2 weeks with epigastric pain radiating to his back, nausea, and vomiting. Initial laboratory values revealed an elevated amylase level consistent with acute pancreatitis. He complains of early satiety, epigastric pain, and fevers. His white blood cell (WBC) count is 23,000/mm” and his amylase level is normal. CT scan demonstrating a 6 cm by 6 cm rim-enhancing fluid collection in the body of the pancreas. Which is most definitive management of the fluid collection?

**Core Concept**
The patient is presenting with symptoms and imaging consistent with a pancreatic pseudocyst, a complication of acute pancreatitis. **Pancreatic pseudocysts** are fluid collections that can develop in the abdomen after an episode of acute pancreatitis. The management of these pseudocysts depends on their size, symptoms, and whether they are infected.

**Why the Correct Answer is Right**
Given the patient's symptoms of early satiety, epigastric pain, fevers, and an elevated white blood cell count, along with the CT scan findings of a large rim-enhancing fluid collection, the most likely diagnosis is an **infected pancreatic pseudocyst**. The definitive management of an infected pancreatic pseudocyst often involves **drainage** of the collection, which can be done percutaneously, endoscopically, or surgically, depending on the patient's condition and the pseudocyst's characteristics.

**Why Each Wrong Option is Incorrect**
**Option A:** Would be incorrect as it does not specify the method of drainage or management.
**Option B:** Might be considered for smaller, asymptomatic pseudocysts but not for infected ones.
**Option C:** Could be a part of the management but is not definitive for an infected pseudocyst.
**Option D:** Is not a standard approach for managing infected pancreatic pseudocysts.

**Clinical Pearl / High-Yield Fact**
The presence of fever, elevated white blood cell count, and a rim-enhancing fluid collection on CT scan are highly suggestive of an infected pancreatic pseudocyst, which requires prompt drainage to prevent further complications.

**Correct Answer:** D. Drainage of the pseudocyst.

✓ Correct Answer: A. Antibiotics and percutaneous catheter drainage