A 71-year-old woman with hematuria and left flank pain.

A 50-year-old woman undergoing imaging after a syncopal episode.

A 16-year-old girl with amenorrhea and cyclical abdominopelvic pain.

A 17-year-old boy with a history of Crohn's disease presents with nausea and vomiting.

A 27-year-old man undergoing imaging after a motor vehicle accident.

A 23-year-old woman with several months of diarrhea, weight loss, and abdominal pain.

A 70-year-old woman with right upper quadrant pain, jaundice, tea-colored urine, and clay-colored stool.

A 62-year-old woman with left lower quadrant pain, nausea and vomiting, and low-grade fever for the past week.

A 67-year-old woman with elevated liver function tests.

A 36-year-old woman undergoes a routine renal ultrasound scan one day after renal transplant.

A 43-year-old man with abdominal pain, diffuse itching, and dark urine.

A 48-year-old man presents for follow-up imaging one year after surgery.

A 29-year-old woman with persistent pain in the left iliac fossa, suprapubic pain, nausea, and vomiting.

A 63-year-old woman with partial gastric outlet obstruction due to pyloric stenosis.

A 62-year-old man with intermittent left lower quadrant pain and diffuse lower abdominal discomfort.

A 75-year-old man with abdominal pain, loss of appetite, and shortness of breath.

A 39-year-old woman with right upper quadrant pain, bloating, and nausea.

A 40-year-old man with chronic abdominal cramping and indigestion.

An 18-year-old woman presents with chronic abdominal discomfort.

A 38-year-old man with gram-negative bacteremia and an infection of unclear source.