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148442 Microbiology

A 32-year-old female prostitute is seen at the public health clinic with fever, night sweats, and reports coughing up blood. Her medical history reveals that she is HIV positive and has lost 20 lbs over the past month. Acid-fast bacilli are observed in the sputum. After digestion of the sputum, isolation of the suspected organism is best accomplished by using which one of the following media?

ALoffler medium
BLowenstein-Jensen medium
CSheep blood agar
DTM agar
Microbiology
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148444 Pathology

Examination of a skin lesion demonstrates very abnormal squamous cells with a high nuclear/cytoplasmic ratio and clumped chromatin. These cells form nests within the epidermis that extend to the superficial surface of the epithelium. In some places, nests of these cells have central areas of abnormal keratin formation. The basement membrane is intact and no nests of cells are seen in the dermis. Which of the following terms best describes this lesion?

ACarcinoma in situ
BDysplasia
CInvasive carcinoma
DMetaplasia
Pathology
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