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Diagnostic ultrasound ( PDFDrive )

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1662 PART V Pediatric Sonography

A

B

FIG. 48.56 Lymphadenopathy Related to Epstein-Barr Virus. (A) Left anterior cervical chain demonstrates enlarged hypoechoic nodal mass.

(B) Color Doppler demonstrates increased central vascularity.

A

B

FIG. 48.57 Complicated Lymphadenitis With Myositis. (A) Ultrasound image shows a hypoechoic collection deep to the sternocleidomastoid

muscle with extension of inlammatory material into muscle (arrow). The sternocleidomastoid (dotted arrows) is heterogeneous and swollen,

consistent with myositis. (B) Axial contrast-enhanced computed tomography conirms presence of an abscess in the right upper neck and associated

adjacent cellulitis and right sternocleidomastoid myositis (arrows).

TABLE 48.3 Age and Causes of

Lymphadenopathy

TABLE 48.4 Site of Node and Causes of

Lymphadenopathy

Pediatric Category

Common Infectious Causes

Node Site

Common Causes

Newborn

Infant and child younger

than 5 years

School-age child and

adolescent

Staphylococcus aureus most

common

Occasionally, late-onset group B

streptococci

Group A streptococci and S.

aureus

Nontuberculous Mycobacterium

Epstein-Barr virus,

cytomegalovirus,

toxoplasmosis

Tuberculosis or infectious

mononucleosis

Occipital

Periauricular

Cervical

Submandibular

Roseola, rubella, scalp infections

Eye infections, cat-scratch disease

Streptococcal or staphylococcal adenitis

or tonsillitis

Mononucleosis, toxoplasmosis,

malignancies, Kawasaki disease

Hodgkin or non-Hodgkin lymphoma,

tuberculosis, histoplasmosis

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