Infectious Diseases — MCQs

What is the mechanism of acute rheumatic fever?

A 40-year-old man presents with a year-long history of oral candidiasis, fever, and diarrhea. Physical examination reveals muscle wasting, with his weight at 70% of normal for his height and age. He has generalized nontender lymphadenopathy but no hepatosplenomegaly. Over the past 3 months, he has developed three irregular, 1- to 2-cm, reddish-purple, nodular skin lesions on his forearm. Laboratory findings show hemoglobin, 12.2 g/dL; hematocrit, 36.5%; MCV, 85 mm3; platelet count, 188,000/mm3; and WBC count, 2460/mm3 with 82% segmented neutrophils, 4% bands, 6% lymphocytes, 6% monocytes, and 2% eosinophils. Infection with which of the following organisms is most likely to produce these findings?

Kaposi sarcoma is caused by:

A 30-year-old man presents with persistent cough, night sweats, low-grade fever, and general malaise. A chest X-ray shows findings consistent with a Ghon complex, and sputum cultures are positive for acid-fast bacilli. Examination of the hilar lymph nodes in this patient would most likely demonstrate which of the following pathologic changes?

Which of the following are granulomatous diseases?

All of the following tumours are associated with organisms, EXCEPT:

All of the following are prion diseases EXCEPT:

Cloudy cornea is a feature of which of the following diseases?

In which of the following types of tumors can HPV-6 be detected?

Stellate granuloma is characteristic of which condition?