Follicular Lesions with Papillary Nuclear Characteristics: Differences in Chromatin Detected by Computerized Image Analysis

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Bárbara Parente Coelho ; Flávia de Oliveira Valentim ; Hélio Amante Miot ; Danilo Takeshi Abe Jaune ; Caroline Yuki Hayashi ; Cristiano Claudino de Oliveira ; Mariângela de Alencar Marques ; José Vicente Tagliarini ; Emanuel Celice Castilho ; Paula Soares ; Gláucia Maria Ferreira da Silva Mazeto

• Tipo de documento: Artigo Científico
• Fonte: ARCHIVES OF ENDOCRINOLOGY METABOLISM; n. ahead, p. -, 2020.

Resumo

ABSTRACT Objective: Follicular lesions of the thyroid with papillary carcinoma nuclear characteristics are classified as infiltrative follicular variant of papillary thyroid carcinoma-FVPTC (IFVPTC), encapsulated/well demarcated FVPTC with tumour capsular invasion (IEFVPTC), and the newly described category “non-invasive follicular thyroid neoplasm with papillary-like nuclear features” (NIFTP) formerly known as non-invasive encapsulated FVPTC. This study evaluated whether computerized image analysis can detect nuclear differences between these three tumour subtypes. Materials and methods: Slides with histological material from 15 cases of NIFTP and 33 cases of FVPTC subtypes (22 IEFVPTC, and 11 IFVPTC) were analyzed using the Image J image processing program. Tumour cells were compared for both nuclear morphometry and chromatin textural characteristics. Results: Nuclei from NIFTP and IFVPTC tumours differed in terms of chromatin textural features (grey intensity): mean (92.37 ± 21.01 vs 72.99 ± 14.73, p = 0.02), median (84.93 ± 21.17 vs 65.18 ± 17.08, p = 0.02), standard deviation (47.77 ± 9.55 vs 39.39 ± 7.18; p = 0.02), and coefficient of variation of standard deviation (19.96 ± 4.01 vs 24.75 ± 3.31; p = 0.003). No differences were found in relation to IEFVPTC. Conclusion: Computerized image analysis revealed differences in nuclear texture between NIFTP and IFVPTC, but not for IEFVPTC. (AU)

• Processo FAPESP: 14/10028-2 - Morfometria nuclear e características texturais da cromatina de lesões foliculares tireoidianas
• Beneficiário: Bárbara Parente Coelho
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica