Right upper quadrant pain, fever, nausea and vomiting for three days.
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The gallbladder is distended, showing mild mural thickening and mural enhancement with surrounding inflammatory fat stranding. No radio-dense stone is detected in the lumen of the gallbladder and biliary ducts. No dilatation of the intra and extrahepatic biliary ducts is noted.
Included sections from the lung base demonstrate; air space consolidatory changes with basal atelectasis predominantly in the right side.
Incidental retro-aortic left renal vein. Rest of examination is unremarkable.
Acute cholecystitis is the most common cause of right upper quadrant pain. Ultrasound is considered more sensitive because isodense gallstones will be missed on CT.
The advantage of CT is better evaluation of other pathologies at the same time.