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Correlation between PET/CT results and histological and immunohistochemical findings in breast carcinomas / Correlação entre resultado do PET/CT e achados histológicos e imuno-histoquímicos em carcinomas mamários
Bitencourt, Almir Galvão Vieira; Lima, Eduardo Nóbrega Pereira; Chojniak, Rubens; Marques, Elvira Ferreira; Souza, Juliana Alves de; Graziano, Luciana; Andrade, Wesley Pereira; Osório, Cynthia Aparecida Bueno de Toledo.
  • Bitencourt, Almir Galvão Vieira; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Lima, Eduardo Nóbrega Pereira; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Chojniak, Rubens; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Marques, Elvira Ferreira; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Souza, Juliana Alves de; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Graziano, Luciana; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Andrade, Wesley Pereira; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
  • Osório, Cynthia Aparecida Bueno de Toledo; A.C.Camargo Cancer Center. Department of Imaging. São Paulo. BR
Radiol. bras ; 47(2): 67-73, Mar-Apr/2014. tab, graf
Article in English | LILACS | ID: lil-710027
ABSTRACT
Objective To correlate the results of 18F-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) performed with a specific protocol for assessment of breasts with histological/immunohistochemical findings in breast carcinoma patients. Materials and Methods Cross-sectional study with prospective data collection, where patients with biopsy-confirmed breast carcinomas were studied. The patients underwent PET/CT examination in prone position, with a specific protocol for assessment of breasts. PET/CT findings were compared with histological and immunohistochemical data. Results The authors identified 59 malignant breast lesions in 50 patients. The maximum diameter of the lesions ranged from 6 to 80 mm (mean: 32.2 mm). Invasive ductal carcinoma was the most common histological type (n = 47; 79.7%). At PET/CT, 53 (89.8%) of the lesions demonstrated anomalous concentrations of 18F-FDG, with maximum SUV ranging from 0.8 to 23.1 (mean: 5.5). A statistically significant association was observed between higher values of maximum SUV and histological type, histological grade, molecular subtype, tumor diameter, mitotic index and Ki-67 expression. Conclusion PET/CT performed with specific protocol for assessment of breasts has demonstrated good sensitivity and was associated with relevant histological/immunohistochemical factors related to aggressiveness and prognosis of breast carcinomas. .
RESUMO
Objetivo Correlacionar o resultado da tomografia por emissão de pósitrons/tomografia computadorizada (PET/CT) com 18F-flúor-2-deoxi-D-glicose (18F-FDG) realizado com protocolo específico para avaliação das mamas com achados histológicos/imuno-histoquímicos em pacientes com carcinomas mamários. Materiais e Métodos Estudo transversal, com coleta prospectiva dos dados, em que foram estudadas pacientes com carcinomas mamários confirmados por biópsia. As pacientes incluídas foram submetidas a exame de PET/CT realizado em decúbito ventral, com protocolo específico para avaliação das mamas. Os achados do PET/CT foram comparados aos dados histológicos e imuno-histoquímicos. Resultados Foram identificadas 59 lesões mamárias malignas nas 50 pacientes incluídas no estudo. O diâmetro máximo das lesões variou de 6 a 80 mm (média : 32,2 mm). O tipo histológico mais comum foi o carcinoma ductal invasivo (n = 47; 79,7%). No PET/CT, 53 (89,8%) destas lesões apresentaram concentração anômala de 18F-FDG, com SUV máximo variando de 0,8 a 23,1 (média: 5,5). Houve associação estatisticamente significante entre maiores valores de SUV máximo e tipo histológico, grau histológico, subtipo molecular, diâmetro do tumor, índice mitótico e expressão de Ki-67. Conclusão O PET/CT realizado com protocolo específico para avaliação das mamas demonstrou boa sensibilidade e apresentou associação com importantes fatores histológicos/imuno-histoquímicos relacionados à agressividade e prognóstico dos carcinomas mamários. .


Full text: Available Index: LILACS (Americas) Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Language: English Journal: Radiol. bras Journal subject: Diagnostic Imaging / Radiology Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C.Camargo Cancer Center/BR

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Full text: Available Index: LILACS (Americas) Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Language: English Journal: Radiol. bras Journal subject: Diagnostic Imaging / Radiology Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C.Camargo Cancer Center/BR