Pancreatic Pseudocysts

On this page

Intro & Etiology - Cystic Conundrum

  • Definition: Localized fluid collection (amylase-rich) near pancreas, enclosed by a non-epithelialized, fibrous, or granulation tissue wall.
  • Lacks true epithelial lining (unlike true cysts).
  • Etiology:
    • Acute Pancreatitis: Most common cause.

      ⭐ Most pseudocysts (75-85%) are a sequela of acute pancreatitis.

    • Chronic Pancreatitis: Often due to ductal obstruction.
    • Pancreatic Trauma: Blunt abdominal injury, iatrogenic (post-surgical/ERCP).
    • Pancreatic Neoplasms (rarely).
    • Idiopathic.

Pancreatic Pseudocyst Location Diagram

Pathophys & Histo - Wall Woes

Error generating content for this concept group: Failed to process successful response

Clinical Features & Diagnosis - Tummy Troubles & Tell-Tales

  • Symptoms: Often asymptomatic. If present: epigastric pain (radiates to back), nausea, vomiting, early satiety, weight loss. Palpable mass. Jaundice (biliary compression).
  • History: Prior pancreatitis or trauma.
  • Labs: Amylase/lipase may be ↑ or normal (esp. if chronic, >6 wks). CA 19-9 mildly ↑ possible.
  • Imaging:
    • USG: Initial scan for fluid.
    • CECT Abdomen: Confirms (wall forms ~4-6 wks), details size, location, complications (infection, hemorrhage).
    • MRI/MRCP: If CECT unclear or for ductal anatomy.
    • EUS+FNA: Complex cases/rule out neoplasm (fluid: ↑ amylase, low CEA).

CECT abdomen showing large pancreatic pseudocyst

⭐ CECT abdomen is the gold standard for diagnosing pancreatic pseudocysts (mature wall visible after 4-6 weeks) and assessing complications.

Complications & Management - Perilous Pockets & Plans

  • Key Complications:
    • Infection (abscess formation), hemorrhage (e.g., from pseudoaneurysm).
    • Rupture (peritonitis), obstruction (gastric, biliary), persistent severe pain.
  • Management Strategy:
    • Conservative: Watchful waiting if asymptomatic, <6cm, AND <6wks old.

      ⭐ Spontaneous resolution in up to 50% of pseudocysts, especially if <6cm and asymptomatic; watchful waiting is often the initial approach.

    • Intervention indicated if: Symptomatic, size >6cm, duration >6wks, or complications present.
      • Endoscopic drainage (cystogastrostomy/duodenostomy) is first-line.
      • Percutaneous drainage: Alternative, especially for infected pseudocysts.
      • Surgical drainage (e.g., cystojejunostomy): Reserved for failures or specific anatomical challenges.

Endoscopic drainage of pancreatic pseudocyst

High‑Yield Points - ⚡ Biggest Takeaways

  • Most common pancreatic cystic lesion, often a sequela of acute/chronic pancreatitis or trauma.
  • Distinctive feature: lacks a true epithelial lining; wall is fibrous and granulation tissue.
  • Typically peripancreatic, frequently located in the lesser sac.
  • Fluid analysis reveals markedly elevated amylase and lipase levels.
  • CT scan is the primary diagnostic imaging modality.
  • Major complications: infection, hemorrhage, rupture, pseudoaneurysm.
  • Management: observation for asymptomatic cases; drainage if symptomatic, large (>6cm), or complicated.

Practice Questions: Pancreatic Pseudocysts

Test your understanding with these related questions

True about pancreatic pseudocysts is:

1 of 5

Flashcards: Pancreatic Pseudocysts

1/9

_____ are the most common cystic neoplasms of the pancreas.

TAP TO REVEAL ANSWER

_____ are the most common cystic neoplasms of the pancreas.

Mucinous cystadenomas (MCNs)

browseSpaceflip

Enjoying this lesson?

Get full access to all lessons, practice questions, and more.

Start Your Free Trial
Pancreatic Pseudocysts - Free Indian Medical PG Review