(BMJ)—A 24-yo Filipino man presented w/ a 1-mo hx of a rapidly growing tender mass on his chest. Exam: vital signs WNL; 7x6-cm smooth, immobile, firm mass over upper sternum, w/ mild erythema, + cervical nodes. CT confirmed the dx. What is it?
Lipoma
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Actinomycosis
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Lymphoma
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Tuberculosis
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Chondrosarcoma
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(BMJ)—A 34-yo woman presented w/ a 9-day hx of progressive bilateral limb weakness and mild dysphagia w/ fluids. Exam: periorbital rash. Grade 3-4/5 bilateral proximal limb and neck flexor weakness. Deep tendon reflexes and sensation intact. Labs: creatine kinase elevated; positive antinuclear matrix protein 2 antibody; weakly positive antinuclear antibody (1:80); negative anti-dsDNA antibody. MRI: hyperintensities in thigh muscles. What is the dx?
Thyrotoxic periodic paralysis
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Systemic lupus erythematosus
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Inclusion body myositis
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Myasthenia gravis
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Dermatomyositis
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(BMJ)—An 11-yo boy w/ autism who ate only potato-containing foods presented w/ bilateral blurred vision, eye pain, and nyctalopia for several weeks. Exam: visual acuity 20/60 in both eyes; superficial punctate keratopathy; severe conjunctival xerosis. What is the dx?
Vitamin A deficiency
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Episcleritis
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Hypothyroidism
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Vitamin E deficiency
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Sjögren syndrome
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(BMJ)—A 73-yo man presented w/ a vascular lesion in his R eye. Exam: tortuous dilated vessel emerging from iris root to pupillary margin, w/ associated episcleral vessel. What is the dx?
Proliferative diabetic retinopathy
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Arteriovenous malformation
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Ocular ischemic syndrome
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Uveitis
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Retinal vein occlusion
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