Immunopathology — MCQs

All of the following statements regarding mast cells are true except?

DiGeorge syndrome is characterized by which of the following?

A 40-year-old man presents with a chronic cough and fever for several months. Chest radiography reveals a diffuse reticulonodular pattern. Microscopic examination of a transbronchial biopsy shows focal areas of inflammation containing epithelioid cell granulomas, Langhans giant cells, and lymphocytes. These findings are typical for which of the following types of hypersensitivity immunologic responses?

What is the most common malignancy in patients with AIDS?

A 40-year-old man with a 10-year history of HIV infection presents with newly diagnosed Kaposi sarcoma involving the skin and a 7-kg weight loss in the past 6 months. His HIV-1 RNA viral load is currently 60,000 copies/mL. Which of the following types of cells is most depleted in his lymph nodes?

Amyloidosis is most commonly secondary to which of the following conditions?

Transfusion reactions are due to which type of hypersensitivity?

A clinical study is performed in which the subjects are children 1 to 4 years old who have had multiple infections with viral, fungal, and parasitic diseases. Compared with a normal control group, these children do not have thymic cells that bear markers of cortical lymphocytes. Which of the following karyotypic abnormalities is most likely to be seen in the children in this study?

The amyloid protein in primary systemic amyloidosis belongs to which of the following classes of fibril proteins?

The type of immunological reaction seen in endothelial corneal graft rejection is: