Free USMLE USMLE Exam Questions

A couple presents to a clinic for workup of infertility after 5 years of unprotected intercourse. The wife denies any medical problems and notes regular menstrual cycles. The husband states that he has had chronic sinusitis and lower respiratory tract infections. Physical examination of the woman is unremarkable. Examination of the man is remarkable for dextrocardia. Further workup of the husband will most likely reveal

Which of the following is a disease characterized by hyperactive sebaceous glands and often associated with dandruff?

Which of the following are not treated with Dexamethasone? 

A 31-year-old woman with type 2 diabetes mellitus comes to the physician because of an oozing, foulsmelling wound on her foot for 2 days. Physical examination shows a 4-cm, necrotizing wound with a purplish black discoloration over the heel. Crepitant bullae producing profuse amounts of serous drainage are seen. A Gram stain of a tissue biopsy specimen shows gram-positive rods. The causal organism most likely produces which of the following virulence factors?

Which of the following is not directly related with Buerger's disease?