Lymphadenitis in children

Feature	Non-Tuberculous Mycobacteria	Tuberculosis	Suppurative Lymphadenitis
Species	Mycobacterium avium complex, Mycobacterium haemophilum, Mycobacterium malmoense, Mycobacterium kansasii	Mycobacterium tuberculosis	Staphylococcus aureus, Streptococcus pyogenes
Age	<5 years	>10 years	all ages
Tuberculosis Risk Factors	abset	present	absent
Time Course	weeks to months	weeks to months	days
Location	unilateral	unilateral or bilateral	unilateral
Skin Changes	re-purple discoloration	none	red discoloration, warm, tender
Constitutional Symptoms	rare	common	rare
Elevated CRP/ESR/WBC	normal or mildly elevated	elevated	elevated
TST >10 mm	30-60%	70-90%	none
IGRA	negative	positive 70-80%	negative