Spot Diagnosis

A 42-year-old man presented with seizures and approximately 300 palpable intramuscular cysts.

A 71-year-old man presented with fever and excruciating left-hand pain that developed 12 hours after eating raw seafood.

A 30-year-old man presented with a 15-month history of intermittent discomfort in the right upper quadrant of the abdomen. He lived in a rural area of Morocco and had occasional contact with dogs.

A 73-year-old woman presented to the emergency department with a painful umbilical nodule that had been enlarging over the past 4 months.

An 86-year-old woman with hypertension who had been treated for pulmonary tuberculosis in the 1950s presented with burning chest and epigastric pain. She had no respiratory symptoms.

A 52-year-old woman presented to the emergency department with a 24-hour history of severe pain and blurred vision in the left eye.

A 9-year-old boy came in for an evaluation of a lesion on his right posterior shoulder that developed approximately three months prior to presentation. The lesion was not painful, but it bled with minimal contact.

Pediatric burn victim with an acute onset of respiratory distress and oxygen desaturation.

This patient presented with acute onset of erythema. Nearly a year earlier she was treated for invasive breast cancer. What is the diagnosis?

A 72-year-old woman presented with a 2-day history of abdominal pain associated with nausea and vomiting. Over the previous 10 years, she had had progressive Alzheimer's disease, requiring her to live in a long-term care facility.