A 35-year-old man with a history of ulcerative colitis and recent abdominal surgery presents with abdominal pain.

A 68-year-old man on hemodialysis via a left arm arteriovenous fistula presents with left-hand weakness and numbness. 

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

A 49-year-old woman with menorrhagia and pelvic pressure for the past three months.

A 74-year-old man with acute slurred speech after being found down.

A 63-year-old man with hematuria and light-headedness after partial nephrectomy.

A 32-year-old woman with left leg edema for the past several months.

A 62-year-old man with pancreatic head mass and obstructive cholangitis presents for biliary drainage.

A 43-year-old man presents with progressive lower-extremity weakness and can no longer walk.

An 83-year-old man with a history of anemia and bloody stools.

A 79-year-old man with a history of endovascular aneurysm repair now presents with enlarging aneurysm on CT angiography.

A 61-year-old woman with several days of melena.

A 75-year-old woman presents with abdominal cramping and diarrhea.

A 30-year-old woman presents to the emergency department with abnormal uterine bleeding.

A 56-year-old man with a metastatic pancreatic neuroendocrine tumor presents with intractable abdominal pain.

A 65-year-old man with urinary retention, urinary frequency, and recurrent urinary tract infections (UTIs).

A 52-year-old woman with abdominal pain, fever, and elevated bilirubin following a liver transplant four months prior.

A 55-year-old woman with a history of congestive heart failure presents with fever, hypotension, and a white blood cell count of 22,000.

A 28-year-old woman with worsening vaginal bleeding following a recent spontaneous abortion.

A 50-year-old woman with a history of multiple abdominal surgeries now presents for evaluation of a small-bowel obstruction.