[The clinical significance of calcification in orbital computed tomography].

OBJECTIVE

To study clinic significance of ocular and orbital diseases with computed tomographic (CT) scans.

METHODS

2181 ocular and orbital photos of computed tomographic scans were reviewed. The relevance with pathogenesis, diagnosis criteria and differential diagnosis of calcification was analyzed.

RESULTS

Of 2181 CT scans, 129 showed calcified densities. 40 cases (31%) with retinoblastoma, and 3 cases (1%) with chorodal osteoma were revealed intraocular lesions containing calcium. The massive calcification was demonstrated in orbital diseases including 58 cases (45%) with vascular lesions, 19 (15%) cases with other orbital benign tumors and 9 cases (8%) with orbital malignant tumors.

CONCLUSION

The calcification number, location and shape within lesions are of great value in the diagnosis of ocular and orbital diseases.