A 23-year-old man who been a passenger in a minivan was brought to the ER after a high-speed road accident. He had transient hypotension and tachycardia, which improved after the administration of intravenous fluids.

An 18-year-old man with no notable medical history had sudden transient tetraplegia after heading a soccer ball. Ten minutes later, he had recovered normal strength. On examination, he had intense cervical pain, paresthesias on his shoulders and arms, and no other neurologic deficits.

A 42-year-old man presented with severe nausea and vertigo, which were precipitated by the application of pressure just anterior to the left external auditory canal. Otoscopic examination revealed a cholesteatoma arising from the pars flaccida of the left tympanic membrane.

A 61-year-old man with spinal cord compression underwent therapeutic laminectomy of the fifth vertebra and laminectomy and vertebroplasty of the fourth vertebra. During the vertebroplasty, polymethylmethacrylate cement leaked into the paravertebral vascular system.

An 18-year-old man presented with a history of progressive anasarca and exertional dyspnea. His jugular venous pressure was elevated and showed prominent systolic pulsations that were eliminated when gentle pressure was applied at the base of the neck.

A woman was referred to the dermatology department for evaluation of swelling and nodules in the right foot, which had been present for 11 years. The nodules were painful, drained material periodically, and made weight-bearing difficult.

A 40-year-old woman with asthma presented with pleuritic chest pain of acute onset. She had been coughing markedly for 2 weeks and had been treated with antibiotics for a lower respiratory tract infection. There was no history of trauma.