RESUMO
Follicular dendritic cell sarcoma is a rare malignant neoplasm and little is known about its radiological features. We present here four cases of follicular dendritic cell sarcomas and we provide the image characteristics of these tumors to help radiologists recognize this entity when making a diagnosis.
Assuntos
Sarcoma de Células Dendríticas Foliculares/diagnóstico por imagem , Adulto , Sarcoma de Células Dendríticas Foliculares/patologia , Diagnóstico Diferencial , Feminino , Neoplasias Gastrointestinais/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Masculino , Neoplasias do Mediastino/diagnóstico por imagem , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios XRESUMO
AIM: To investigate the feasibility of using diffusion-weighted MR imaging (DWI) to accurately measure breast cancer extension. MATERIALS AND METHODS: The extensions of 59 breast lesions were investigated on DW images and apparent diffusion coefficient (ADC) maps and compared to the pathological exams. RESULTS: Three groups were observed: accurate, overdiagnosis, and false negative. There were no significant differences seen in accurate or false-negative group when b was 500 and 1000 s/mm(2) when two lesions in the overdiagnosis group at both b values. CONCLUSION: DWI and the ADC value have potential for evaluating cancer extension.