Giant nodular posterior scleritis simulating choroidal melanoma and birdshot retinochoroidopathy

A case of nodular posterior scleritis simulating both a choroidal tumor and birdshot chorioretinopathy is described. Fluorescein angiography, indocyanine green angiography, and ultrasound were performed. Results of laboratory tests were normal, including HLA-A29, erythrocyte sedimentation rate, rheumatoid factor, and antinuclear antibodies. A chest x-ray was normal. A diagnosis of nodular posterior scleritis was made and the minimally symptomatic patient without ocular pain was observed unless symptoms progressed. In this case, certain clinical features led to the proper diagnosis.