Painless Orbital Bone Infarction in a Child with Sickle Cell Anemia: A Case of Misdiagnosed Periorbital Cellulitis.

BACKGROUND Sickle cell orbitopathy is a rare complication of sickle cell disease that closely mimics other conditions, such as orbital cellulitis and osteomyelitis. We report a case of painless orbital bone infarction masquerading as periorbital cellulitis in a child with sickle cell anemia. CASE REPORT A 4-year-old Saudi girl with sickle cell disease presented to our hospital with vaso-occlusive crisis characterized by bilateral lower limb pain and painless left orbital swelling. On examination, she had swelling of the left upper eyelid with redness and mild ptosis (margin reflex distance 1 was 2 mm) without proptosis. Magnetic resonance imaging with contrast showed bilateral sub-periosteal heterogeneous collections (2×0.8×2.1 cm in the superolateral wall of the left orbit and 1×0.6 cm in the inferolateral wall of the right orbit), with intermediate-to-high T1 signal intensity and high T2 signal, causing a mass effect on the adjacent superior and lateral rectus muscles. The patient was treated with systemic antibiotics and supportive treatment for vaso-occlusive crisis under the care of the pediatric team and was discharged without complications. CONCLUSIONS The diagnosis of sickle cell orbitopathy can be challenging, and an accurate diagnosis is essential to ensure appropriate management. Thus, we report the case of a 4-year-old child with painless sickle cell orbitopathy masquerading as pre-septal cellulitis.