RESUMO
Resource-limited settings often have financial barriers to genetic testing for heritable cancer. This retrospective study investigated the pattern of heritable cancer predisposition testing in a middle-income country over the period 2014-2021, excluding retinoblastoma. After establishing a specific fund in 2019, rate of tests increased from 1.1% to 10.9% of new diagnoses. Most common testing was for constitutional mismatch repair deficiency (CMMRD), rhabdoid predisposition syndrome, TP53 (tumor protein 53) mutation, and hereditary cancer panel. Of 33 patients, 13 (39%) tested positive, 12 (36%) negative, and eight (24%) had variants of unknown significance. Positivity rate was 43% for a clinical phenotype and 44% for a tumor type indication.
Assuntos
Neoplasias Encefálicas , Neoplasias Colorretais , Síndromes Neoplásicas Hereditárias , Neoplasias da Retina , Retinoblastoma , Neoplasias Encefálicas/patologia , Neoplasias Colorretais/genética , Reparo de Erro de Pareamento de DNA , Predisposição Genética para Doença , Testes Genéticos , Humanos , Síndromes Neoplásicas Hereditárias/diagnóstico , Síndromes Neoplásicas Hereditárias/genética , Neoplasias da Retina/diagnóstico , Neoplasias da Retina/genética , Retinoblastoma/diagnóstico , Retinoblastoma/genética , Estudos RetrospectivosRESUMO
Purpose: To report a rare case of a conjunctival blue nevus in a child. Observations: A 10-year-old girl underwent an excisional biopsy for an atypical growing melanocytic conjunctival lesion. The diagnosis of a conjunctival blue nevus was confirmed on histopathology. We describe the histopathology and the anterior segment optical coherence tomography features of a blue nevus in a 10-year-old child along with a review of literature. Conclusion and importance: Conjunctival blue nevus is rare and has rarely been reported in a child. Multimodal imaging may help document lesion progression. This condition should remain in the differential for a growing, pigmented conjunctival lesion.