The gallbladder of a 51-year-old female patient is characterized by the presence of multiple gallstones, consistent with the diagnosis of cholecystitis. Which of the following tests would be anticipated to be positive in this patient?
**Core Concept**
The patient's presentation of multiple gallstones and cholecystitis suggests a diagnosis of chronic cholecystitis, a condition characterized by inflammation of the gallbladder due to chronic obstruction by gallstones. This condition often leads to thickening of the gallbladder wall and fibrosis.
**Why the Correct Answer is Right**
The most relevant test in this scenario is the ultrasound, which is highly sensitive for detecting gallstones and gallbladder wall thickening. Ultrasound can also assess the size and number of gallstones, as well as the thickness of the gallbladder wall, providing valuable information for diagnosing chronic cholecystitis. The presence of multiple gallstones and wall thickening would be consistent with chronic cholecystitis.
**Why Each Wrong Option is Incorrect**
**Option A:** Liver function tests (LFTs) may be elevated in patients with cholecystitis due to bile duct obstruction, but they are not specific for diagnosing gallstones or gallbladder inflammation.
**Option B:** Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) are nonspecific markers of inflammation and may be elevated in patients with cholecystitis, but they do not specifically diagnose gallstones or gallbladder inflammation.
**Option C:** Abdominal computed tomography (CT) scan may be useful for detecting complications of cholecystitis, such as gangrene or perforation, but it is not the first-line test for diagnosing gallstones or gallbladder inflammation.
**Option D:** Magnetic resonance cholangiopancreatography (MRCP) is a highly sensitive test for detecting bile duct stones and strictures, but it is not typically used for diagnosing gallstones or gallbladder inflammation.
**Clinical Pearl / High-Yield Fact**
Chronic cholecystitis is often associated with a history of recurrent biliary colic, which is characterized by episodic pain in the right upper quadrant of the abdomen, usually radiating to the right shoulder.
**Correct Answer:** C.