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Difficulty: MediumGastroenterology and Hepatology

A male patient, aged 4242, presents to a gastroenterology practice for a follow-up evaluation. He complains of a persistent sensation of abdominal fullness and an inability to finish normal-sized meals, which began three weeks ago. He also notes experiencing intermittent waves of nausea without vomiting. The patient was hospitalized eight weeks prior for a severe episode of acute pancreatitis secondary to heavy alcohol consumption, which was managed with supportive care. His vital signs are currently within normal limits, and he is afebrile. Physical examination is notable for a palpable, non-tender fullness in the epigastric region. Laboratory test results show a normal leukocyte count, normal serum lipase, and normal liver function panels. A contrast-enhanced abdominal computed tomography scan demonstrates a 99 cm unilocular, well-circumscribed, thin-walled fluid collection located in the lesser sac, tightly abutting the posterior wall of the stomach. There is no solid debris or free air within the collection. Based on these clinical and radiographic findings, which of the following is the most appropriate next step in management?

  1. Endoscopic transmural drainage of the collectionAnswer
  2. B
    Empiric initiation of broad-spectrum antibiotic therapy
  3. C
    Percutaneous catheter drainage under radiological guidance
  4. D
    Expectant management with repeat computed tomography in six weeks
  5. E
    Urgent open surgical debridement of the fluid collection

Answer

The most appropriate next step is endoscopic transmural drainage of the fluid collection.
The correct intervention is endoscopic transmural drainage. This patient has a pancreatic pseudocyst, a common complication of acute pancreatitis defined as an encapsulated collection of pancreatic fluid that typically matures ≥4\geq 4 weeks after the initial inflammatory event. While small or asymptomatic pseudocysts can be managed with observation alone (as they often spontaneously resolve), intervention is required when the cyst becomes symptomatic (e.g., causing early satiety, abdominal pain, or biliary obstruction) or develops complications. This patient has a large (99 cm) cyst causing gastric compression and early satiety. For pseudocysts that are mature and tightly abut the posterior wall of the stomach or duodenum, endoscopic transmural drainage (cystogastrostomy) is the first-line treatment. It is minimally invasive, highly effective, and avoids the major complication of percutaneous drainage, which is the formation of a chronic pancreaticocutaneous fistula.

Step-by-Step Solution

1
Analyze the patient's history and imaging findings.
The patient has a 99 cm unilocular, well-circumscribed fluid collection in the lesser sac 88 weeks after an episode of acute pancreatitis.
To establish the diagnosis of a mature pancreatic pseudocyst.
2
Evaluate the patient's symptoms in relation to the fluid collection.
The patient is experiencing early satiety and nausea due to the 99 cm cyst causing mechanical mass effect on the stomach.
To determine whether intervention is indicated. Symptomatic pseudocysts or those rapidly enlarging require drainage, whereas asymptomatic ones can be observed.
3
Select the optimal interventional modality.
Endoscopic transmural drainage (cystogastrostomy) is chosen.
Because the cyst is mature (present for >4>4 weeks) and directly abuts the posterior stomach wall, endoscopic drainage is the preferred first-line therapy, offering a lower risk of pancreaticocutaneous fistula compared to percutaneous drainage.

Key Concept

Management of symptomatic pancreatic pseudocysts requires minimally invasive drainage, with endoscopic transmural drainage being the preferred modality for collections abutting the stomach.
Estimated Time:1m 15s
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Topics

Gastroenterology and Hepatology

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