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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

Phlebotomy Essentials
Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
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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
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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