Lateral radiographs of the nasopharynx in 257 children two years of age or less were evaluated to determine the age at which lymphoid tissue in the posterior nasopharynx becomes visible radiographically. Soft tissue was observed in the nasopharynx in all infants over six months old but in only half of those under six months. In no infant less than one month old was a soft-tissue mass seen in the posterior nasopharynx on lateral films of that area. These findings suggest that in children over six months of age, absence of this lymphoid tissue may be significant and imply an immune deficiency; its absence in infants under six months may be normal.
No takes yet. Share an insight, caveat, or question.
Capitanio et al. (1970) studied this question.