A subperiosteal abscess is a form of orbital cellulitis characterized by a collection of fluid and pus confined by the periosteal lining of the orbit. In neonates, orbital abscesses are extremely rare. We present a case of a 26-day-old baby girl with severe orbital cellulitis in the right eye. A computed tomography (CT) scan of the orbits and paranasal sinuses revealed right orbital cellulitis with medial subperiosteal and retro-orbital abscess. The growth of Staphylococcus aureus was found in eye discharges. The patient was started on intravenous ceftriaxone and intravenous metronidazole. Urgent drainage of the abscess was performed via functional endoscopic sinus surgery (FESS). She recovered well after intravenous antibiotics and surgical drainage. Surgical drainage via endoscopic technique is the preferred treatment to prevent further complications.%骨膜下脓肿是眼眶蜂窝织炎的一种,以脓和渗出液汇集在眼眶内骨膜下为特点.对于新生儿,眼眶脓肿非常罕见.我们报告1例年龄为26d的右眼患有严重眼眶蜂窝织炎的女患儿.眼眶和副鼻窦CT扫描显示右眼眶蜂窝织炎并内侧骨膜下和眼眶后部脓肿.眼分泌物培养见葡萄球菌生长,经用先锋霉素和甲硝唑静脉注射和经内窥镜鼻窦手术行急诊脓肿引流,恢复良好.通过内窥镜的鼻窦引流手术是预防更严重的并发症的首选治疗.
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