Ilio-psoas abscess in a neonate

Neonatal Iliopsoas Abscess: The First Korean Case

Iliopsoas abscess (IPA) is rare in neonates. We present a case of neonatal IPA that was initially believed to bean inguinal hernia. A 20-day-old male infant was referred to our hospital for herniorrhaphy after a 2-day history of swelling and bluish discoloration of the left inguinal area and leg without limitation of motion. Abdominal and pelvic ultrasonography suggested a femoral hernia, but the anatomy was unclear. Abdominal computed tomography revealed a multi-septated cystic mass extending into the psoas muscle from the lower pole of the left kidney to the femur neck. Broad spectrum antibiotics were initiated, and prompt surgical exploration was planned. After opening the retroperitoneal cavity via an inguinal incision, an IPA was diagnosed and surgically drained. Culture of the abscess fluid detected Staphylococcus aureus, sensitive to methicillin. The patient was discharged without complication on the 17th postoperative day.

Neonatal iliopsoas abscess

Iliopsoas abscess (IPA) is rare in children, particularly in neonates. A male neonate was born at 38 weeks of gestation with a weight of 2915 g. On day 22 after birth, his family noticed that his right thigh was swollen. Abdominal computed tomography showed a mass extending to the right iliopsoas from the right thigh with thick septa. Puncture to the right groin yielded purulent fluid, and so a diagnosis of abscess was made. The puncture was followed by surgical drainage through a small inguinal incision, and the abscess cavity was irrigated thoroughly using normal saline. Culture of abscess fluid was positive for Streptococcus pneumoniae, so intravenous ABPC infusion was continued. The postoperative magnetic resonance imaging indicate that the IPA was derived from arthritis of the hip, and the patients received Riemenbügel for the incomplete hip dislocation. He is doing well at 2 years of age.

Iliopsoas abscess in the neonate

Iliopsoas abscess (IPA) is rare, especially in the neonatal period. The major presenting symptoms of IPA are leg or groin swelling, limitation of leg motion, and pain. The etiologies of IPA in many cases remain unknown, and the etiologic agent in many cases is Staphylococcus aureus. Ultrasonography and computed tomography are useful in diagnosing this disease. Antibiotics therapy and appropriate drainage are effective, and the prognosis is good. The authors present a neonatal case of IPA and discuss clinical symptoms, etiologic agents, methods of diagnosis and therapy, and prognosis.

Ilio-psoas abscess caused by methicillin-resistant Staphylococcus aureus (MRSA): a rare but potentially dangerous condition in neonates

We report a case of methicillin-resistant Staphylococcus aureus ilio-psoas abscess (IPA) in a neonate. This case has clinical importance because this neonate had toxic shock syndrome-like exanthematous disease, known as NTED, before developing IPA. A high index of suspicion is required for IPA if a neonate presents with limb disuse and fever of unknown origin. Our case required surgical drainage, since ultrasound-guided percutaneous needle aspiration failed.