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1416 Pathology

A 25-year-old woman is concerned about a lump on the left side of her neck that has remained the same size for the past year. Physical examination shows a painless, movable, 3-cm nodule beneath the skin of the left lateral neck just above the level of the thyroid cartilage. There are no other remarkable findings. Fine-needle aspiration of the mass is performed. Her physician is less than impressed by the pathology report, which notes, “Granular and keratinaceous cellular debris”. Fortunately, she has saved her Robbins pathology textbook from medical school. She consults the head and neck chapter to arrive at a diagnosis, using the data from the report. Which of the following terms best describes this nodule?

ABranchial cyst
BMetastatic thyroid carcinoma
CMucocele
DMucoepidermoid tumor
Pathology
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1419 Pathology

During heterosexual intercourse, seminal fluid containing HIV contacts vaginal squamous mucosa. Cells capture virions and transport the virus via lymphatics to regional lymph nodes. Within the germinal centers of these lymph nodes, the virions infect CD4+ lymphocytes and proliferate, causing CD4+ cell lysis with release of more virions, which are taken up on the surface of cells having Fc receptors, allowing continued infection by HIV of more CD4+ cells passing through the nodes. Which of the following types of cells is most likely to capture HIV on its surface via Fc receptors?

AB lymphocyte
BCD8+ cytotoxic lymphocyte
CFollicular dendritic cell
DNatural Killer cell
Pathology
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