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A 17-year-old male presents to his primary doctor complaining about an extremely itchy rash on his elbows and other extensor surfaces. This rash is shown in Figure A. Given the clinical associations of this rash, what other disease must be considered in this patient?
Juvenile rheumatoid arthritis
Systemic lupus erythematosis
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A 35-year-old Caucasian female presents with anemia, malaise, bloating, and diarrhea. Past genetic testing revealed that this patient carries the HLA-DQ2 allele. The physician suspects that the patient's presentation is dietary in cause. Which of the following findings would definitively confirm this diagnosis?
CT scan showing inflammation of the small bowel wall
Biopsy of the duodenum showing atrophy and blunting of villi
Biopsy of the colon showing epithelial cell apoptosis
Liver biopsy showing apoptosis of hepatocytes
Esophageal endoscopy showing lower esophageal metaplasia
A 30-year-old Caucasian female presents with weight loss, pallor, and periodic abdominal discomfort. Physical exam reveals pruritic, red lesions on the patient’s shoulders, elbows, and knees. An endoscopic duodenal biopsy is taken and shown in Figure A. Which of the following diseases is associated with the patient’s condition?
Helicobacter pylori infection
A 22-year-old woman presents to her primary care physician complaining of a red, itchy rash on her elbows and shoulders for 2 months. She has no history of medical problems, and review of systems is positive only for occasional loose stools. She is appropriately prescribed dapsone, which relieves the rash within hours. What is the diagnosis?
Porphyria cutanea tarda
Systemic lupus erythematousus