RESUMO
Rosai-Dorfman disease (sinus histiocytosis with massive lymphadenopathy) is an uncommon histiocytic disease of the lymph nodes. Extranodal presentation, especially in breast parenchymal tissue, is rare. A 54-year-old woman presented with a painful and palpable lump in the right breast. Ultrasonography revealed an irregular, indistinct, hypoechoic mass with a hyperechoic halo. Pathological analysis revealed proliferation of large histiocytes and stromal fibrosis with emperipolesis and positive immunoreactivity for S-100 and CD68. The clinical and radiologic manifestations of Rosai-Dorfman disease may vary, and differentiation from other inflammatory diseases and malignancies is challenging; thus, accurate pathological diagnosis plays an important role in appropriate management.
Assuntos
Doenças Mamárias/diagnóstico por imagem , Histiocitose Sinusal/diagnóstico por imagem , Ultrassonografia Mamária/métodos , Mama/diagnóstico por imagem , Mama/patologia , Doenças Mamárias/patologia , Feminino , Fibrose/diagnóstico por imagem , Fibrose/patologia , Histiocitose Sinusal/patologia , Humanos , Linfonodos/diagnóstico por imagem , Linfonodos/patologia , Pessoa de Meia-IdadeRESUMO
Fenestration of the supraclinoid internal carotid artery is extremely rare and frequently associated with aneurysms at the fenestrated segment or other vascular anomalies. We present a rare case of fenestration of the right supraclinoid internal carotid artery in which a small fenestrated segment arose from the neck portion of the paraclinoid aneurysm and fused with the origin of the posterior communicating artery.