86.A 41-year-old woman presents to the ED complaining of pain in her
RUQ that is steady but gets worse with eating over the past 2 days. The pain
also radiates to the right side of her midback. She denies vomiting. Her only
medication is an oral contraceptive. Her BP is 140/75 mm Hg, HR is 80 beats
per minute, temperature is 98.7°F, and RR is 16 breaths per minute. Labora-
tory tests are within normal limits. An abdominal ultrasound reveals stones
in her gallbladder, but no thickened wall or pericholecystic fluid. What is the
most likely diagnosis?
a. Cholangitis
b. Urolithiasis
c. Cholecystitis
d. Biliary colic
e. Peptic ulcer disease
Abdominal and Pelvic Pain 83