Pediatr Emerg Med J.  2023 Oct;10(4):165-168. 10.22470/pemj.2023.00787.

Unusual presentation of primary iliopsoas abscess in an infant: a case report

• Choi S
• Son J
• Na JY

• KMID: 2546292
• DOI: http://doi.org/10.22470/pemj.2023.00787

Abstract

Iliopsoas abscess (IPA) rarely occurs in newborns and infants. Symptom triad, including fever, inguinal swelling or discoloration, and limited lower limb movement, is observed in most cases. Herein, we report a case of unusual IPA in an 82-day-old boy who presented with fever as the only symptom. To our best knowledge, there have been no reports of infant IPA presenting without localizing signs. This report highlights the importance of a high degree of suspicion for timely diagnosis of infant IPA when an infant presents only with fever.

Keyword

Case Reports; Infant; Fever; Fever of Unknown Origin; Psoas Abscess; Staphylococcus aureus

Figure

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  Fig. 1. Abdominal ultrasonogram on day 3. It shows a 3.1 cm-sized hypoechoic lesion occupying the left pelvis.

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  Fig. 2. Pelvic magnetic resonance imaging on day 3. Axial scans show a 3.4 cm-sized peripheral enhancing mass involving the left iliopsoas muscle (arrow, A [T1-weighted image]) and right-sided deviation of the rectum and bladder (arrowheads, B [T2-weighted image]). The mass is also noted on coronal scan (arrowheads, C [T2]).

Reference

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