Spot Diagnosis

A 42-year-old man who was undergoing treatment for non-Hodgkin’s lymphoma presented to the oncology clinic with changes in his fingernails. What is the most likely underlying cause of this presentation?

A 70-year-old woman presented with a 1-week history of dizziness and generalized rash following the onset of a viral respiratory tract infection. On physical examination, she had a generalized, macular, nonblanching, purplish rash.

A 30-year-old man presented with a rash on his face, hands, and feet. He had a history of HIV with a CD4+ T-cell count of 374 per cubic millimeter. Physical examination showed circinate lesions on the palms, soles, and face and patchy alopecia.

A 37-year-old man presented with a 4-year history of excessive sweating, headaches, and joint pain. His wife had also noticed increasing skin folds on his scalp. He also had enlarged feet and hands and a protruding lower jaw.

What could be the most likely diagnosis for this incidental finding on an MRI?

An 84-year-old man presented with fever, malaise, and discoloration and pain in his fingers and toes ongoing for 2 weeks. What is the most likely diagnosis?

What is the Diagnosis Based on This Head CT ?

A 73-year-old woman presented to the dermatology clinic with an 11-month history of an evolving pruritic, erythematous rash on her thighs and buttocks. On physical examination she was noted to have polycyclic erythematous plaques.

An 83-year-old healthy woman was admitted with episodes of nausea and vertigo that had increased in frequency over several months. Many of the episodes involved brief periods of unresponsiveness and staring spells.

A 69-year-old man presented to the dermatology clinic with a 2-month history of a pruritic rash. The rash first appeared on his right wrist and within 2 weeks had spread to his arms, legs, and trunk. His medical history was notable for chronic hepatitis C virus (HCV) infection.