Spot Diagnosis

A 53-year-old woman was admitted to the hospital for evaluation of a 1-week history of lower abdominal pain and dysuria. She was afebrile.

A 23-year-old man presented to the emergency department with rapidly progressive left arm pain and erythema extending from the hand to the axilla. He had felt well until the previous night, when his left third finger was injured during a lacrosse game.

An 86-year-old man was hospitalized for repeated episodes of septic shock due to methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. In 1948, the patient had pulmonary tuberculosis. What do you see on this Chest X-ray ?

A 49-year-old woman with morbid obesity and hypertension presented with extensive areas of redness and weeping sores on her legs. What is the most likely cause of these skin changes?

A 24-year-old man who had been wearing a seatbelt while driving a car involved in a high-speed motor vehicle crash. Which structure has been disrupted and what's the diagnosis ?

A 39-year-old woman presented with painless, nonpruritic, flagellate hyperpigmentation on her trunk, 1 week after intralesional sclerotherapy of vascular malformation of the posterior tongue. What's the diagnosis and what could have caused these skin changes ?

A 67-year-old woman presented with a 6-month history of dyspnea and dysphagia. What is the diagnosis?

A 12-year-old girl presented with a one-month history of decreased appetite, vomiting, and weight loss. The patient had had no fevers or night sweats. What is the most likely diagnosis?

A 47-year-old homeless man presented to the emergency department 1 week after the onset of chest pain. He was hemodynamically stable. The physical examination was unremarkable. What's the Diagnosis ?

What is the diagnosis in this 70-year-old patient who developed bilateral tender erythematous, fluctuant, subcutaneous masses over each elbow that had been gradually enlarging for several years?