ABSTRACT
We present the CT and MR features of a posttraumatic cutaneous meningioma of the face. We postulate that the patient's trauma and associated skull fracture resulted in a trapping of extracranial meningeal tissue, which many years later gave rise to a secondary facial meningioma.
Subject(s)
Choristoma/diagnosis , Facial Neoplasms/diagnosis , Frontal Bone/injuries , Meningeal Neoplasms/diagnosis , Meninges , Meningioma/diagnosis , Skin Neoplasms/diagnosis , Skull Fractures/complications , Aged , Biopsy , Choristoma/pathology , Choristoma/surgery , Facial Neoplasms/pathology , Facial Neoplasms/surgery , Female , Humans , Magnetic Resonance Imaging , Meningeal Neoplasms/pathology , Meningeal Neoplasms/surgery , Meningioma/pathology , Meningioma/surgery , Skin Neoplasms/pathology , Skin Neoplasms/surgery , Tomography, X-Ray ComputedABSTRACT
A case of acute subdural hemorrhage caused by rupture of an anterior communicating artery aneurysm is presented. The patient is a young man who presented with an acute onset of neurologic symptoms; computed tomography revealed subdural hemorrhage in the absence of associated subarachnoid or intraparenchymal bleeding.
Subject(s)
Hematoma, Subdural/etiology , Intracranial Aneurysm/complications , Acute Disease , Adult , Hematoma, Subdural/diagnostic imaging , Humans , Intracranial Aneurysm/diagnostic imaging , Male , Rupture, Spontaneous , Tomography, X-Ray ComputedABSTRACT
OBJECTIVE: To outline the physical principles of magnetic resonance angiography (MRA), major current MRA techniques, clinical indications and some of the limitations of MRA. The rapidly changing nature of MRA techniques is stressed. DATA SOURCES AND DATA EXTRACTION: The MRA literature for the last eight years is reviewed with particular attention to the changing clinical role of MRA. Details of specific MRA techniques are omitted for simplicity and because of their lack of direct relevance to the clinicians requesting MRA examinations. Data concerning the clinical role of MRA techniques are extracted from the literature and combined with our own clinical experience. DATA SYNTHESIS: While stressing the rapidly changing nature of this new investigational technique, we find that MRA has a number of current roles in patient management. CONCLUSIONS: MRA is currently a useful investigation and will in all likelihood become more useful in the future as the technique improves further and becomes more available.
Subject(s)
Blood Vessels/pathology , Magnetic Resonance Imaging , Technology Assessment, Biomedical , Angiography , Humans , Magnetic Resonance Imaging/methodsABSTRACT
Seventy selected cases were reviewed retrospectively to assess the normal Gd-DTPA enhanced MR appearance of the cervical anterior epidural venous plexus. This structure can enhance quite markedly and has a somewhat variable appearance on MR imaging but we believe that it can be differentiated from pathological enhancement in the area if attention is paid to its normal anatomical characteristics.
Subject(s)
Cervical Plexus/anatomy & histology , Contrast Media , Gadolinium , Organometallic Compounds , Pentetic Acid , Adolescent , Adult , Aged , Aged, 80 and over , Child , Gadolinium DTPA , Humans , Magnetic Resonance Imaging , Middle Aged , Retrospective StudiesABSTRACT
Primary T-cell lymphoma within the central nervous system is extremely rare. Imaging characteristics appear indistinguishable from the more common B-cell lymphoma. A case of such a primary tumor is discussed and the MRI and CT findings presented.
