An 80-year-old woman presented with abdominal pain and tachycardia that began several hours ago.

A 42-year-old woman with a history of hyperlipidemia was found to have a mass on abdominal CT.

An 18-year-old male cross-country runner presented with bilateral calf pain and cramping with exercise over the previous few months.

A 91-year-old woman was referred to the emergency room for left hip pain after falling.

A 71-year-old man presented with edema and redness along his right arm.

A 38-year-old woman with known alcoholic liver cirrhosis (Child-Turcotte-Pugh class C, decompensated liver disease) presented to the emergency department after a witnessed generalized tonic-clonic seizure secondary to alcohol withdrawal.

An 86-year-old woman with an unknown previous medical history presented with vague abdominal pain and chest pain. 

An 81-year-old man presented with left groin pain and swelling. The patient's history was significant for paroxysmal atrial fibrillation and flutter, which had been recently treated with cardiac and pulmonary vein ablation.

A 60-year-old man with recently diagnosed esophageal cancer was transferred from an outside hospital with hemorrhagic shock.

A 32-year-old woman with recurring abdominal pain, nausea, vomiting, and unintentional weight loss.

A 42-year-old man with sickle cell anemia and epigastric pain.

A 60-year-old man with new-onset hematuria and hypertension.

A 25-year-old woman with generalized abdominal pain associated with nausea.

A 30-year-old man with acute-onset midsternal chest pain.

Woman with deep vein thrombosis for whom anticoagulation was contraindicated.

A 33-year-old pregnant woman with new hypoxia.

A 47-year-old woman with a severe acute-onset headache.

A 20-year-old woman with abnormal uterine bleeding and worsening diffuse lower abdominal pain that started three days ago.

An 89-year-old woman with new-onset atrial fibrillation.

A 49-year-old woman with intermittent chest discomfort.