ABSTRACT
It is extremely dangerous to treat the posterior third of the superior sagittal sinus (PTSSS) surgically, since it is usually not completely ligated. In this report, the authors described the case of a 27-year-old man with a ruptured and defective PTSSS caused by an open depressed skull fracture, which was treated by ligation of the PTSSS and the patient achieved a positive recovery. The patient's occiput was hit by a height-limiting rod and was in a mild coma. A CT scan showed an open depressed skull fracture overlying the PTSSS and a diffuse brain swelling. He underwent emergency surgery. When the skull fragments were removed, a 4 cm segment of the superior sagittal sinus (SSS) and the adjacent dura mater were removed together with bone fragments. Haemorrhage occurred and blood pressure dropped. We completed the operation by ligating the severed ends of the fractured sagittal sinus. One month after the operation, apart from visual field defects, he recovered well. In our opinion, in primary hospitals, when patients with severely injured PTSSS cannot sustain a long-time and complicated operation, e.g., the bypass using venous graft, and face life-threatening conditions, ligation of the PTSSS is another option, which may unexpectedly achieve good results.
Subject(s)
Adult , Humans , Male , Cranial Sinuses , Skull Fracture, Depressed/surgery , Superior Sagittal Sinus/surgery , Tomography, X-Ray ComputedABSTRACT
Anaplastic or malignant meningiomas that are classified as World Health Organization (WHO) grade III account for less than 1% of all meningiomas diagnosed. Despite the aggressive course, distant metastases are a rarity, occurring in only 0.1% to 0.2% of cases. We report the case of a 56-year-old woman who presented with parasagittal benign meningioma that underwent malignant transformation along with metastasis into the right orbitosphenoid region. The clinical, radiological, and histopathological aspects are highlighted, with an emphasis on the natural history of meningiomas.
Subject(s)
Humans , Female , Middle Aged , Superior Sagittal Sinus/surgery , Meningeal Neoplasms/surgery , Meningioma/pathology , Neoplasm Metastasis , Superior Sagittal Sinus/pathology , Meningeal Neoplasms/pathology , Meningioma/surgery , Meningioma/diagnostic imagingABSTRACT
Objetivo: conocer la anatomía de los senos de la duramadre, especialmente del seno sagital superior (SSS) y sus relaciones con las estructuras lindantes. Material y método: se utilizaron 39 encéfalos inyectados y formalizados, disecándose con técnicas microscópicas y con lupas de 2.5X el seno sagital superior y estructuras lindantes comparándose los resultados con angiografías normales. Resultados: la longitud del SSS osciló entre 20-27 cm (media 23.58 cm). Observamos que el tercio medio mayormente se desplaza a derecha, siendo 100% concordante con la sutura sagital a nivel de su desembocadura distal. En 28 casos (71.8%) había comunicación con el seno sagital inferior, conformando plexos venosos. Las lagunas se posicionaron en forma variable, ubicándose mayormente en relación al tercio medio, y ninguna en el tercio posterior. Las venas emisarias parietales drenan en el tercio medio del seno sagital superior en el 100%, mientras que las venas nasales fueron encontradas sólo en 5 casos (12,82%). Conclusión: consideramos que el conocimiento anatómico del seno sagital superior es vital en la táctica quirúrgica a fin de evitar y prever complicaciones en las cirugías que impliquen patologías de la línea media.