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Background: A multi-modality imaging approach plays a vital role for diagnosis however have a nonspecific appearance and need pathological confirmation to arrive at a specific diagnosis.

Objective: Evaluation of the demographic profile and Clinical Presentation in orbital mass lesion among paediatric group would provide a general guideline to diagnose the nature of orbital mass lesion along with each histological variety.

Methodology: This cross sectional study was conducted in the Department of Radiology and Imaging of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh during the period of January 2012 to December 2013 for duration of two year. The all patient below 18 years of age presented with suspected orbital mass and performed CT scan of orbit for diagnosis of the disease and also done histopathology after operation.

Result: A total number of seventy cases were selected among them majority 25(35.7%) patients belonged to age ≤5 years and distribution of male to female ratio was 1.3:1.Clinical presentation of the patients showed that majority 52(74.1%) had decrease vision of eye and 24(34.3%) had proptosis. In this study a total of 42 benign cases was identified by histopathology among them 21.4% patients had dermoid and identified 28 malignant cases, among them 12.9% had retinoblastoma.

Conclusion: Evaluation of CT scan findings in orbital mass lesion among paediatric group would provide a general guideline to diagnose the nature of mass lesion.

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