Abstract
Background
Nontuberculous mycobacteria (NTM) are a common cause of chronic cervicofacial lymphadenitis in young children. The differential diagnosis includes other infections, lymphoepithelial cysts and malignancies.
Objective
To assess the sonographic findings of NTM cervicofacial lymphadenitis in children.
Materials and methods
We analysed the sonograms of cervicofacial lymph nodes of 145 children with microbiologically proven NTM lymphadenitis.
Results
The size of the involved lymph nodes ranged from 1.9 cm to 4.4 cm. Most of the NTM patients (85%) presented in a stage of lymph node fluctuation with violaceous skin discoloration. On sonography, marked decreased echogenicity was seen in all cases. In 133 of the patients (92%) liquefaction with intranodal cystic necrosis, nodal matting and adjacent soft-tissue oedema were present. 66 children received antibiotic treatment, and the other children underwent surgical excision of the involved lymph nodes. In 69% of the patients successfully treated with antibiotics, multiple intranodal calcifications were present on sonography after 1 year.
Conclusions
Sonographic findings can provide additional diagnostic clues for NTM lymphadenitis in childhood. A marked decrease of echogenicity in the early stages, with intranodal liquefaction in the advanced stages, are universal features, albeit not entirely specific. Multiple intranodal calcifications are rather characteristic of end-stage mycobacterial infection.
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Acknowledgements
The study was supported by grants from the Netherlands Organization for Scientific Research (ZonMw), grant no. 945-02-019, and from the Leiden Foundation Microbiology. We thank all the children who took part in the study, and their parents.
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Lindeboom, J.A., Smets, A.M.J.B., Kuijper, E.J. et al. The sonographic characteristics of nontuberculous mycobacterial cervicofacial lymphadenitis in children. Pediatr Radiol 36, 1063–1067 (2006). https://doi.org/10.1007/s00247-006-0271-6
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DOI: https://doi.org/10.1007/s00247-006-0271-6