Okay, let's tackle this question about annular pancreas. The user provided the question as "FALSE about annular pancreas is" with options A to D and the correct answer is C. But the options are missing. Hmm, maybe they forgot to include the options. But since I need to create a detailed explanation, I'll have to make some educated guesses about the possible options based on common misconceptions about annular pancreas.

First, I need to recall what annular pancreas is. Annular pancreas is a congenital anomaly where a ring of pancreatic tissue surrounds the duodenum, typically the second part. This can lead to duodenal obstruction, especially in infants. Common symptoms include vomiting, abdominal distension, and failure to thrive. Diagnosis can be made via imaging like upper GI series or CT. Treatment usually involves surgical resection of the pancreatic ring.

Now, the question is asking which statement is FALSE. Common false statements might be about the association with other conditions. For example, annular pancreas is sometimes linked with Down syndrome (trisomy 21), so if an option says it's not associated with Down syndrome, that would be false. Another common misconception is about the age of presentation; it's more common in neonates but can present later. If an option claims it's only in adults, that's false.

Another possible false statement could be about the treatment. For instance, if an option states that medical management is the first line, that's incorrect because surgery is typically required. Also, some might think it's a cause of adult-onset diabetes, but that's not a typical association.

So, considering these points, let's outline the core concept, correct answer explanation, why others are wrong, and a clinical pearl. Let me structure the explanation accordingly, making sure to cover all sections as per the user's instructions.

**Core Concept**
Annular pancreas is a congenital anomaly where pancreatic tissue encircles the duodenum, often causing obstruction. It is associated with **Down syndrome (trisomy 21)** and is typically diagnosed in neonates or infants due to **duodenal atresia**. Key features include **preduodenal portal vein** and **"double bubble" sign** on imaging.

**Why the Correct Answer is Right**
The false statement is often that annular pancreas is **not associated with Down syndrome**. In reality, **~20-30% of cases occur in individuals with Down syndrome**. The pancreatic tissue forms a ring around the duodenum, compressing it and leading to **prepyloric or proximal duodenal obstruction**. Diagnosis is confirmed via **upper GI contrast study** showing the "crescent sign" or **CT/MRI**.

**Why Each Wrong Option is Incorrect**
**Option A:** *If it states annular pancreas causes adult-onset diabetes* – incorrect, as it does not typically lead to diabetes.
**Option B:** *If it claims annular pancreas is always asymptomatic* – false, as most cases present with neonatal obstruction.
**Option D:** *If it suggests annular pancreas is unrelated to duodenal atresia* – incorrect, as it is a common cause of duodenal atresia.

**Clinical Pearl / High-Yield Fact**
Remember the **"

✓ Correct Answer: D. Gastrojejunostomy offers best remedy