CT scan appearance of dysthyroid orbital disease.

Two cases of dysthyroid orbital diseases are presented which on CT scan had the characteristic appearance of intraorbital tumors. An operation was performed on one of these patients based on the CT scan appearance. This entity should not be confused with true intraorbital neoplasms. One must not rely exclusively on the CT scan in questionable cases as with any other ancillary diagnostic acid and one must bear in mind that dysthyroid disease in evolution may exactly mimic the CT scan appearance of an intraorbital tumor.