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Year : 2022  |  Volume : 2  |  Issue : 4  |  Page : 971-973

Orbital intramuscular lipoma with bone erosion: A case report and review of literature

1 Department of Ophthalmology, Queen Sirikit National Institute of Child Health, Bangkok, Thailand
2 Department of Surgery, Division of Neurosurgery, Queen Sirikit National Institute of Child Health, Bangkok, Thailand

Correspondence Address:
Dr. Nutsuchar Wangtiraumnuay
Department of Ophthalmology, Pediatrics Ophthalmologist and Ocular Genetics, Queen Sirikit National Institute of Child Health, Bangkok
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_248_22

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This report highlights a rare case of a benign orbital intramuscular lipoma mimicking a malignant tumor with unusual sphenoid wing destruction. A 2-year-old female patient presented with proptosis of the left eye, left temporal fullness, and motility disturbance during abduction. Brain and orbital computed tomography revealed an inhomogeneous enhancing density partially circumscribed mass in the left extraconal space (36.6 × 34.4 × 34.2 mm) with bone erosion of the greater wing of the left sphenoid bone. The clinical and radiologic findings suggested rhabdomyosarcoma. Histopathology revealed diffuse infiltration of mature adipocytes in the striated muscle. An intramuscular lipoma, a rare subtype of benign lipoma, can mimic malignant orbital tumors due to adjacent bone erosion.

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