A 45-year-old man with new-onset flank pain.

A 31-year-old woman with acute retention of urine for one day and pain in the lower abdomen for two months.

A 60-year-old woman with weeks of right flank pain.

A 55-year-old man with new-onset, mild, nonspecific abdominal pain.

A 35-year-old transgender man with history of sex reassignment surgery undergoing routine follow-up.

A 64-year-old woman with prior lower-extremity varicose veins now with distended abdominal veins.

A 53-year-old woman with amenorrhea and a history of fibroids and menorrhagia.

A 33-year-old woman at 26 weeks' gestation undergoing prenatal screening.

A 73-year-old man with an elevated prostate-specific antigen (PSA) level and history of cancer.

A 50-year-old man with discomfort in the bilateral testicles.

A 67-year-old man undergoing surveillance imaging after cystectomy for bladder cancer.

A 0-day-old boy (gestational age, 36 weeks and 2 days) with notable scrotal swelling on physical exam.

A 41-year-old man with low cortisol and hypoglycemia.

A 65-year-old woman with left lower quadrant abdominal pain and hematuria.

A 19-year-old man with left flank pain after ureteroscopy and urinary calculus removal.

A 65-year-old woman with new onset dysuria/hematuria and a history of diabetes.

An 82-year-old woman with fever, gross hematuria, and lower abdominal pain for one day.

A 26-year-old woman with a palpable right groin mass and acute worsening of abdominal pain.

A 20-year-old man with an incidentally noted painless testicular mass.

A 28-year-old man with acute worsening of scrotal swelling.