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| Ultrason ographic Evaluation of Suppurative Cervical Lymphadenitis in Children : Focusing on Abscess Formation |
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| Min-Hee Lee, M.D., Sun-Wha Lee, M.D., Byung-Chul Kang, M.D. |
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| Department of Diagnostic Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, *Department of Diagnostic Radiology, College of Medicine, Ewha Womans University |
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| Purpose : To analyze the US findings of suppurative cervical lymphadenitis in children and to define the US features
of drainable abscess.
Materials and Methods : We retrospectively evaluated the US findings of suppurative cervical lymphadenitis in 22 chil-dren
(age; 40 days-14 years). Among them, eighteen were confirmed by drainage or needle aspiration, and four
diagnosed on the basis of typical findings of abscess on enhanced CT. Echogenicity, shape (ratio of long/short
diameter) of suppurative lymph nodes, and the changes of adjacent soft tissue on US were assessed, and color
signal patterns of 17 suppurative lymph nodes on color Doppler imaging were also recorded. We compared the
US with CT findings (n=14).
Results : Eight of 22 were abscesses of typical US pattern, showing the characteristic anechoic central cores. Forteen
demonstrated low echogenicity with mottled anechoic portions, atypical US pattern. Ratio of long/short diame-ter
measured more than 2 in 16 of 22, and less than 2 in 6. Adjacent subcutaneous tissue was thickened and in-creased
in echogenicity with hypoechoic irregular lines in all cases. On color Doppler imaging, only peripheral
pattern was seen in four of 5 suppurative lymph nodes of typical pattern. In 12 suppurative lymph nodes of atyp-ical
pattern, there were 4 peripheral patterns, 2 central patterns and 6 mixed patterns. Compared the US findings
with CT, all three suppurative lymph nodes of typical US pattern showed peripheral rim enhancement.
Peripheral rim enhancement containing low attenuated internal portion (n=8) and inhomogeneous enhancement
(n=3) were observed in 11 suppurative lympy nodes of atypical pattern.
Conclusion : Any lymph node with complex echogenicity containing mottled anechoic portions with adjacent edema-tous
subcutaneous tissue as well as central anechoic core could be regarded as the findings of drainable abscess
in US diagnosis of suppurative cervical lymphadenitis in children. |
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| Keyword : Lymphatic system, diseases, Lymphatic system, US, Neck, abscess |
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pdf파일 : 313이민희1.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 1999 ; 18 (4) : p.313-318
