Spot Diagnosis

A 47-year-old woman with no medical history presented with swelling, pain, and reddish discoloration of the right arm and hand after strenuous effort. What is the diagnosis?

This lesion developed on the chest of a 35-year-old man during treatment for a respiratory tract infection. What is the diagnosis?

An 85-year-old male cigar smoker with no notable medical history presented with black discoloration and hairy appearance of the tongue, which had lasted for several years. What is the diagnosis?

Twelve hours after urgent coronary angiography, the appearance of this patient's feet had changed. What is the most likely explanation for the finding?

A 51-year-old woman presented with weight loss (despite good appetite), palpitations, tremor, and heat intolerance. This patient was being treated by an endocrinologist for which condition?

A 37-year-old man presented with a brownish-black nail on the great toe of the right foot. A darkly pigmented linear patch had started to form within the toenail 4 years earlier and had widened and darkened over time. What is the diagnosis?

A 62-year-old man presented with lesion on his face which was determined to be a neovascular formation, with an arteriole in the central region that radiated out in numerous small vessels that resembled the legs of a spider. What is the most likely underlying diagnosis?

A 56-year-old woman began to have pain and redness of the left leg the day after a six-hour car ride. Two days later she was found to have erythema and tenderness on the medial aspect of the left knee and moderate pitting edema of the left ankle. What's the Diagnosis ?

A 26-year-old malnourished woman presented with a 4-day history of mouth pain and a 3-month history of fatigue, general malaise, and palpitations. What is the most likely diagnosis?

A 69-year-old man was referred for the evaluation of changes to his fingernails. Physical examination revealed multiple white lines on the fingernails. What is the most likely cause of this presentation?