ABSTRACT
El objetivo de esta comunicación es ilustrar los hallazgos por resonancia magnética y tomografía computarizada del sarcoma fibromixoide de bajo grado de localización intracraneal extraaxial del que solo existen tres casos descritos en la literatura médica previamente. Para ello presentamos el caso de una mujer de 18 años con una historia de hipoacusia, acúfenos, cefalea occipital y paresia facial izquierda de 5 meses de evolución. En la tomografía computarizada se objetivó una gran lesión expansiva homogénea en el ángulo pontocerebeloso izquierdo que erosionaba el peñasco y afectaba al agujero rasgado posterior; en la resonancia magnética se comportaba como una lesión homogénea e isointensa en T1 y heterogénea e hipointensa en T2 en relación con el parénquima cerebral con realce de forma intensa y homogénea con la administración de contraste. El diagnóstico definitivo se estableció con la anatomía patológica y la inmunohistoquímica (AU)
The aim of this report is to show the MRI and CT findings for an extra-axial intracranial low-grade fibromyxoid sarcoma. To our knowledge, only three similar cases have been reported to date. We present the case of an 18-year-old woman who presented with a five-month history of hypoacusia, tinnitus, occipital headache, and left facial paresis. CT showed a large, homogeneous, expansive lesion in the left pontocerebellar angle that was eroding the promontory and affecting the posterior jugular foramen. At MRI, the lesion was homogeneous and isointense with respect to the cerebral parenchyma on T1-weighted sequences and heterogeneous and hypointense on T2-weighted sequences; after the administration of contrast material, it showed intense, homogeneous enhancement. The definitive diagnosis was established by histopathologic and immunohistochemical study (AU)
Subject(s)
Humans , Female , Adult , Liposarcoma, Myxoid , Connective Tissue , Connective Tissue Diseases/pathology , Connective Tissue Diseases , Magnetic Resonance Imaging/methods , Magnetic Resonance Imaging , /methods , Immunohistochemistry/methods , Gadolinium , Cerebellar Cortex/pathology , Diagnosis, Differential , Fibrosarcoma , Cerebellar Cortex , Cerebellar NeoplasmsABSTRACT
The aim of this report is to show the MRI and CT findings for an extra-axial intracranial low-grade fibromyxoid sarcoma. To our knowledge, only three similar cases have been reported to date. We present the case of an 18-year-old woman who presented with a five-month history of hypoacusia, tinnitus, occipital headache, and left facial paresis. CT showed a large, homogeneous, expansive lesion in the left pontocerebellar angle that was eroding the promontory and affecting the posterior jugular foramen. At MRI, the lesion was homogeneous and isointense with respect to the cerebral parenchyma on T1-weighted sequences and heterogeneous and hypointense on T2-weighted sequences; after the administration of contrast material, it showed intense, homogeneous enhancement. The definitive diagnosis was established by histopathologic and immunohistochemical study.
