142. A 1-year-old boy has had recurrent pyogenic infections of the skin and upper respiratory tract. His brother died at the age of 6 months from an undiagnosed infection; his sister appears healthy. Laboratory studies of serum show: IgG IgA, IgM Peripheral lymphocytes 120 mg/dL undetectable 80% T lymphocytes, <1% B lymphocytes Which of the following findings is most likely on examination of tonsillar tissue? A) Absence of lymphoid follicles and germinal centers B) Absence of macrophages OC) Decreased cellularity of the parafollicular cortex
142. A 1-year-old boy has had recurrent pyogenic infections of the skin and upper respiratory tract. His brother died at the age of 6 months from an undiagnosed infection; his sister appears healthy. Laboratory studies of serum show: IgG IgA, IgM Peripheral lymphocytes 120 mg/dL undetectable 80% T lymphocytes, <1% B lymphocytes Which of the following findings is most likely on examination of tonsillar tissue? A) Absence of lymphoid follicles and germinal centers B) Absence of macrophages OC) Decreased cellularity of the parafollicular cortex
Chapter14: Allergy: An Overview
Section: Chapter Questions
Problem 24RQ
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Transcribed Image Text:142. A 1-year-old boy has had recurrent pyogenic infections of the skin and upper respiratory
tract. His brother died at the age of 6 months from an undiagnosed infection; his sister
appears healthy. Laboratory studies of serum show:
IgG
IgA, IgM
Peripheral lymphocytes
120 mg/dL
undetectable
80% T lymphocytes, <1% B lymphocytes
Which of the following findings is most likely on examination of tonsillar tissue?
OA) Absence of lymphoid follicles and germinal centers
B) Absence of macrophages
C) Decreased cellularity of the parafollicular cortex
D) Hyperplasia of endothelial cells lining lymphatic sinusoids
E) Increased numbers of eosinophils and plasma cells
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