Fig. 3C). Medical evaluation for lymphoma, metastatic disease,
and atypical infection was performed. All pertinent
laboratory workup, including but not limited to human immunodeficiency
virus, aspergillus, acid-fast bacillus, fungal
culture, antineutrophil cytoplasmic antibody, and perinuclear
antineutrophil cytoplasmic antibody was negative. However,
IgA deficiency with a value of less than 10 was discovered
(normal range 15).