Chondrosternal Arthritis in Infant: An Unusual Entity

Table 1

Clinical data of the 3 patients.

Patient’s data	Case  1	Case  2	Case  3
Sex	F	M	F
Age (months)	12	12	8
Predisposing factors	—	—	—
Symptoms duration before admission	3 days	15 days	7 days
Symptoms
Fever (>38°C)	3 days (two weeks before first admission)	Days 0–3	Day 0, once
Palpable mass	Yes	Yes	Yes
Pain	No	Yes	Yes
Biological data
CRP (normal <1 mg/dL)	1.8	3.5	0.8
WBC	10500	8800	9900
Imaging
Chest radiograph	Normal	Normal	Normal
Ultrasound	Inflammatory mass of the 3rd chondrosternal joint	Inflammatory mass of a chondrosternal joint	Inflammatory mass of a chondrosternal joint
Thoracic CT	Not performed	Negative	Not performed
Cultures
Blood culture	Negative	Negative	Negative
Joint puncture	Not performed	Negative	Negative
Treatment	Oral oxacillin; 100 mg/kg/day	Initial IV cefotaxime-oxacillin followed by oral amoxicilline-clavulanic acid	Oral oxacillin; 100 mg/kg/day
Total duration of antibiotherapy	6 weeks	8 weeks	7 days
Follow-up	2 years	2 years	2 years
	No relapse	No relapse	No relapse

F = female, M = male, IV = intravenous, CT = computerized tomography.