RESUMO
La hiperplasia estromal pseudoangiomatosa de mama es una lesión mesenquimal benigna poco frecuente de la mama. Se presenta un caso de paciente femenina de 49 años, quien consultó por presentar tumoración en mama izquierda de crecimiento rápido y progresivo. La ecografía mamaria mostró lesión heterogénea e hipoecoica con varios nódulos. La mamografía mostró tumoración ovalada con márgenes difusos sin microcalcificaciones. La biopsia con aguja gruesa guiada por ecografía reveló hallazgos celulares compatibles con fibroma mamario. El diagnóstico anatomopatológico fue de hiperplasia estromal pseudoangiomatosa de mama. Este es un tumor mesenquimal benigno, poco frecuente, secundario a la proliferación exacerbada de fibroblastos y miofibroblastos maduros, cuyo factor desencadenante aún es desconocido. La mayoría se presenta como lesiones difusas, y el diagnóstico es a menudo incidental o en un contexto de otras patologías mamarias(AU)
Pseudoangiomatous stromal hyperplasia of the breast is a rare benign mesenchymal lesion of the breast. We present a case of a 49-year-old female patient who consulted for having a rapidly and progressively growing tumor in her left breast. Breast ultrasound showed a heterogeneous and hypoechoic lesion with several nodules. Mammography showed an oval tumor with diffuse margins without microcalcifications. Ultrasound-guided core needle biopsy revealed cellular findings compatible with breast fibroma. The anatomopathological diagnosis was pseudoangiomatous stromal hyperplasia of the breast. This is a rare benign mesenchymal tumor secondary to exacerbated proliferation of mature fibroblasts and myofibroblasts, whose triggering factor is still unknown. Most present as diffuse lesions, and the diagnosis is often incidental or in the context of other breast pathologies(AU)
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Neoplasias da Mama , Células Estromais , Hiperplasia , Mamografia , Ultrassonografia , Biópsia com Agulha de Grande CalibreRESUMO
Abstract Mammary hibernomas are extremely rare benign tumors composed of brown fat cells, with only five cases previously reported in the literature. We report the case of a 42- year-old female patient with a painless growing mass in her right breast. A partial mastectomy was performed, and the diagnosis of hibernoma was confirmed by the histological features and the immunohistochemical profile. Although hibernoma is a benign tumor, its main differential diagnoses include aggressive lesions, making the accurate diagnosis essential to provide adequate care to the patient.
Resumo Hibernomas mamários são tumores benignos extremamente raros compostos por gordura marrom, com apenas cinco casos previamente relatados na literatura. Relatamos o caso de uma paciente do sexo feminino, de 42 anos de idade, apresentando- se com uma massa indolor em sua mama direita. Realizou-se uma mastectomia parcial e o diagnóstico de hibernomamamário foi confirmado pelo padrãomorfológico e pelo perfil imuno-histoquímico. Embora hibernomas constituamneoplasias benignas, seus principais diagnósticos diferenciais incluem lesões agressivas, sendo o diagnóstico acurado extremamente importante para o correto manejo clínico do paciente.