"Pseudo tumor" is an idiopathic orbital inflammatory disease characterized by non-specific inflammation involving the orbit. This condition being non-infectious, and non-neoplastic disease with unknown etiology. After thyroid orbitopathy and lymphoproliferative disorder, this is a common condition in paediatric patients. It may pose difficulties in diagnosis. We report a case of 9 months old male child presented with unilateral proptosis, swollen painful lids, with restricted movements for 3

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... s. In the beginning patient was misdiagnosed as orbital pre-septal cellulitis. We diagnosed this case on ultrasonography and contrast enhanced computerized tomography of brain with orbit. This condition needs to be differentiated from other orbital condition which are common in pediatric age group.