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Pseudomelanoma diagnosis in a tertiary ophthalmologic centre in Spain.
Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie 2024 Februrary 20
BACKGROUND: The purpose of this study was to determine the types and frequency of lesions that can be misdiagnosed as choroidal or ciliary body melanomas (posterior uveal tract melanoma [PUM]).
METHODS: This is a retrospective, descriptive study examining data from patients referred to Hospital La Paz in Madrid with the diagnosis of possible PUM between January 2005 and March 2020. All patients referred for PUM were studied. In collaboration with an oncology-specialized ophthalmologic centre, each patient underwent a full ophthalmic examination, ultrasonography, and optical coherence tomography, with agreed clinical criteria used to differentiate melanomas from pseudomelanomas.
RESULTS: In our cohort of 715 patients, 48.9% had pseudomelanomas. Thirty-five different conditions were misdiagnosed as melanomas. The 5 most common conditions were choroidal nevus (40.5%), peripheral exudative hemorrhagic chorioretinopathy (12%), choroidal hemangioma (10.5%), choroidal metastasis (8%), and age-related macular degeneration (4%).
CONCLUSIONS: Altering the diagnosis and changing the treatment and prognosis for patients can be difficult for a referral centre. Herein we present the largest European cohort investigated and highlight the importance of identifying the correct diagnosis to prevent mistreatment and possible overtreatment. These misdiagnoses can have an emotional effect on patients and their families, which could be avoided with a correct diagnosis. We analyze the most common pseudomelanoma diagnoses to help physicians better diagnose patients in their care.
METHODS: This is a retrospective, descriptive study examining data from patients referred to Hospital La Paz in Madrid with the diagnosis of possible PUM between January 2005 and March 2020. All patients referred for PUM were studied. In collaboration with an oncology-specialized ophthalmologic centre, each patient underwent a full ophthalmic examination, ultrasonography, and optical coherence tomography, with agreed clinical criteria used to differentiate melanomas from pseudomelanomas.
RESULTS: In our cohort of 715 patients, 48.9% had pseudomelanomas. Thirty-five different conditions were misdiagnosed as melanomas. The 5 most common conditions were choroidal nevus (40.5%), peripheral exudative hemorrhagic chorioretinopathy (12%), choroidal hemangioma (10.5%), choroidal metastasis (8%), and age-related macular degeneration (4%).
CONCLUSIONS: Altering the diagnosis and changing the treatment and prognosis for patients can be difficult for a referral centre. Herein we present the largest European cohort investigated and highlight the importance of identifying the correct diagnosis to prevent mistreatment and possible overtreatment. These misdiagnoses can have an emotional effect on patients and their families, which could be avoided with a correct diagnosis. We analyze the most common pseudomelanoma diagnoses to help physicians better diagnose patients in their care.
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