True/False regarding pancreatitis- CECT is the IOC for acute pancreatitis. Modified Balthazar CT severity index score >6 indicates good prognosis. ‘Duct penetrating sign’ is seen in adenocarcinoma of pancreas. Colon cut off sign is seen in acute pancreatitis. IOC for chronic pancreatitis is MRCP.
**Core Concept**
The question tests knowledge on the imaging modalities used in diagnosing and grading pancreatitis, specifically acute and chronic forms. The correct answer requires understanding the strengths and limitations of various imaging techniques, including CT scans, MRI, and MRCP.
**Why the Correct Answer is Right**
CECT (Contrast-Enhanced Computed Tomography) is indeed the imaging modality of choice for diagnosing acute pancreatitis due to its high sensitivity and specificity in detecting pancreatic inflammation and necrosis. The Modified Balthazar CT severity index score is used to grade the severity of pancreatitis, with scores ≤6 indicating a good prognosis. However, scores >6 suggest severe pancreatitis. The "duct penetrating sign" is a characteristic feature of pancreatic adenocarcinoma, where the tumor erodes into adjacent structures. The "colon cut off sign" is a radiological finding associated with acute pancreatitis, where contrast extravasation is seen in the bowel wall, indicating inflammation. MRCP (Magnetic Resonance Cholangiopancreatography) is the imaging modality of choice for chronic pancreatitis, as it provides detailed visualization of pancreatic ductal anatomy and potential strictures.
**Why Each Wrong Option is Incorrect**
**Option A:** The statement about CECT being the IOC for acute pancreatitis is true, but it does not address the other options.
**Option B:** Modified Balthazar CT severity index score >6 indicates poor prognosis, not good prognosis.
**Option C:** The "duct penetrating sign" is seen in adenocarcinoma of the pancreas, not in chronic pancreatitis.
**Option D:** MRCP is the IOC for chronic pancreatitis, not acute pancreatitis.
**Clinical Pearl / High-Yield Fact**
Remember that CECT with a Modified Balthazar CT severity index score >6 indicates severe pancreatitis, which requires aggressive management and close monitoring. Also, be aware that the "colon cut off sign" is a radiological finding that can be seen in other conditions besides acute pancreatitis, such as bowel obstruction or ischemia.
**Correct Answer: D. IOC for chronic pancreatitis is MRCP.**