ABSTRACT
A newborn with antenatal diagnosis of fetal hydrops at 36 wk of gestation, presented with congestive heart failure (CHF) and generalized edema. Computed tomographic angiography showed marked dilatation of cerebral duro-venous system including vein of Galen (VOG), straight sinus, torcula and transverse sinus without evidence of arteriovenous fistulae at the vein of Galen. Dilatation of duro-venous system resolved with concomitant improvement in biventricular function and CHF with decongestive therapy. Such entity should be differentiated from more serious conditions like VOG malformation and venous sinus thrombosis.
Subject(s)
Cerebral Veins/pathology , Dilatation, Pathologic , Dura Mater/blood supply , Edema/etiology , Edema/therapy , Heart Failure/etiology , Heart Failure/therapy , Humans , Hydrops Fetalis/diagnosis , Infant, Newborn , Intracranial Hypertension/etiology , Intracranial Hypertension/therapy , Remission, Spontaneous , Tomography, X-Ray ComputedABSTRACT
This study analyzes the temporal-spatial correlation between angio-and corticogenesis in the developing chick optic tectum (OT) by means of NADPH-diaphorase and immunolabeling methods. Qualitative and quantitative parameters were used to analyze a new vessels formation and growth of preexisting ones as a function of time and space...
Subject(s)
Chick Embryo , Cell Movement/physiology , Neovascularization, Pathologic/pathology , Cell Proliferation , Central Nervous System/embryology , Cerebral Veins/pathology , Visual Pathways/anatomy & histology , AnisotropyABSTRACT
BACKGROUND: Knowledge of variations in the cerebral venous anatomy and apparent signal abnormalities seen on Magnetic resonance (MR) angiography are essential to avoid over-diagnosis of cerebral venous sinus thrombosis (CVST), while interpreting the MR angiograms. AIMS: To evaluate the variations of cerebral venous anatomy and signal abnormalities by using 3D phase contrast MR angiography performed in a 0.5 Tesla MRI scanner. MATERIALS AND METHODS: One hundred patients who underwent MR imaging and MR angiography examinations at our institution from March 2004 to February 2005, with normal MR imaging of brain were studied retrospectively. Patients with clinical suspicion of CVST and patients who underwent color doppler evaluation for suspected deep vein thrombosis were excluded. RESULTS: The superior sagittal, straight sinus and the internal cerebral veins were visualized in all patients. There was hypoplasia of the right transverse sinus in 13 patients, left transverse sinus in 35 patients, right sigmoid sinus in 6 patients and left sigmoid sinus in 19 patients. Absence of transverse sinus on left side was observed in one patient and absence of sigmoid sinus in 2 patients on left side. Flow gaps were observed in non-dominant transverse sinus, sigmoid sinus as well as transverse sigmoid sinus junctions. The occipital sinus was visualized in 17 patients. CONCLUSIONS: MR angiography done at low field strengths is also a reliable method, for assessing cerebral venous sinuses. Awareness of the normal anatomical variations of venous sinuses and apparent MR angiographic flow gaps prevent misdiagnosis of cerebral venous sinus thrombosis.
Subject(s)
Adolescent , Adult , Aged , Cerebral Veins/pathology , Child , Child, Preschool , Cranial Sinuses/pathology , Diagnosis, Differential , Female , Humans , Imaging, Three-Dimensional , Magnetic Resonance Angiography , Male , Middle Aged , Sinus Thrombosis, Intracranial/diagnosisABSTRACT
Grandes lesões que ocupam bilateralmente o espaço incisural posterior são de difícil abordagem cirúrgica pelos acessos clássicos. Recentemente, Kawashima et al. descreveram, em peças anatômicas, uma modificação do acesso occipital transtentorial, o acesso occipital bitranstentorial-falcino, para abordagem de grandes lesões que ocupam bilateralmente o espaço incisural posterior. Retata-se um caso de grande meningioma falco-tentorial que ocupava o espaço incisural posterior bilateralmente. O acesso occipital bitranstentorial-falcino permitiu exérese completa da lesão sem déficit no pós-operatório.
Subject(s)
Female , Humans , Middle Aged , Meningeal Neoplasms/surgery , Meningioma/surgery , Neurosurgical Procedures/methods , Occipital Bone/surgery , Pineal Gland/surgery , Cerebral Veins/pathology , Magnetic Resonance Imaging , Occipital Bone/anatomy & histology , Pineal Gland/anatomy & histology , Tomography, X-Ray ComputedABSTRACT
The case of a 28 years old woman presenting with headache, drowsiness and vomiting of a short duration, is presented. She was diagnosed as deep cerebral venous thrombosis on the basis of MRI findings. Treatment with heparin gave completed recovery
Subject(s)
Humans , Female , Cerebral Veins/pathology , Cerebrovascular Disorders , Review , Venous Thrombosis , Magnetic Resonance Imaging , Tomography, X-Ray ComputedABSTRACT
We report a case of a neonate who presented with signs of severe congestive cardiac failure due to A.V malfunction involving the vein of Galen
Subject(s)
Humans , Male , Infant, Newborn, Diseases , Cerebral Veins/pathology , Arteriovenous Malformations/physiopathologySubject(s)
Adult , Antibodies, Anticardiolipin/blood , Cerebral Veins/pathology , Diagnosis, Differential , Humans , Immunoglobulin G/blood , Immunoglobulin M/blood , Intracranial Embolism and Thrombosis/blood , Magnetic Resonance Imaging , Male , Pseudotumor Cerebri/diagnosis , Tomography, X-Ray ComputedABSTRACT
The clinical and computed tomography (CT) features of 25 patients with peripartum CVT are described. Majority of the patients presented in postpartum period and did not receive proper antenatal care. Headache (92%), altered sensorium (80%, seizures (76%), papilloedema (80%) and hemiplegia (52%) were the common modes of presentation. CT findings included diffuse brain oedema (52%), haemorrhagic or nonhaemorrhagic infarctions on one or both sides of brain (48%), gyral enhancement (40%) and tentorial enhancement (16%). While 15 patients made good recovery, 3 cases (12%) died during acute stage of illness.