No abstract available.
Magnetic Resonance Imaging* ; Tomography, Emission-Computed, Single-Photon*

Microscopic calcification within the basal ganglia was reported by Virchow and Bamberger in 1855. The description of symmetrical cerebral calcification, particularly of the basal ganglia and often of the dentate nuclei, associated with hypoparathyrodism as related by Eaton, Camp and Love(1939) was a significant development in the field of calcification. Calcification of the basal ganglia has been visualized by skull radiography and computed tomography(CT) scan, and in two-third of cases, it has been associated with metabolic and endocrine abnormalities. Computed tomography is more sensitive to detect the intracranial calcification than plain skull radiography. The purpose of our report was evaluate the significance of basal ganglia calcification as visualized by CT, discusses on pathogensis of calcification, clinical significance and management under the hypocalemia.
Basal Ganglia* ; Hypoparathyroidism* ; Radiography ; Skull

PURPOSE: Although platelet-rich plasma (PRP) potentiate the wound healing activity of adipose-derived stem cells (ADSCs), its effect cannot be sustained for a prolonged period of time due to short duration of action. This led us to design and produce platelet-rich fibrin (PRF), in an effort to develop a tool which lasts longer, and apply it on wound healing. METHODS: Two symmetrical skin defects were made on the back of seven nude mice. ADSCs were applied to each wound, combined with either PRP or PRF. The wound area was measured over 14 days. By day 16, the wound was harvested and histologic analysis was performed including counting of the blood vessel. RESULTS: The healing rate was more accelerated in PRP group in the first 5 days (p<0.05). However, PRF group surpassed PRP group after 6 days (p<0.05). The average number of blood vessels observed in the PRF group was 6.53 +/- 0.51, compared with 5.68 +/- 0.71 for the PRP group. CONCLUSION: PRF exerts a slow yet pervasive influence over the two-week course of the wound healing process. Thus, PRF is probably more beneficial for promoting the activity of ADSCs for a sustained period of time.
Acceleration ; Animals ; Blood Platelets ; Blood Vessels ; Fibrin ; Mice ; Mice, Nude ; Platelet-Rich Plasma ; Skin ; Stem Cells ; Wound Healing

Intracranial metastasis of hepatocellular carcinoma have been rarely reported, even in the Orient and Africa where this carcinoma is one of the relatively common malignancies. Hepatocellular carcinomas usually spread to regional lymph nodes around the porta hepatis via lymphatics. But venous metastasis of this cacinoma can occur via intrahepatic vein. The lungs are the most common distant metastatic sites followed by stomach, bones, and adrenals. Recently, we experienced a case of intracranial metastasis of hepatocellular carcinoma associated with epidural hematoma. Although the epidural hematoma and the metastatic tumor mass were totally removed, the patient died of liver complications on the 9th day of postoperative care. The clinical and radiological details of this case are presented here with a brief review of the literature.
Africa ; Carcinoma, Hepatocellular* ; Hematoma* ; Humans ; Liver ; Lung ; Lymph Nodes ; Neoplasm Metastasis* ; Postoperative Care ; Stomach ; Veins

Patients with extra-axial mass lesions of the posterior fossa frequently demonstrate signs of brainstem dysfunction. These dysfunctions may be induced by the change of regional cerebral blood flow and electrophysiological status as well as mechanical compression and distortion of the brainstem. Frontal cortical regional cerebral blood flow(rCBF), pontine rCBF, brainstem autidory evoked potentials(AEPs), infratentorial intracranial pressure(infratentorial ICP) and mean arterial blood pressure(MABP) were recorded before and after expansion of an infratentorial epidural ballon in anesthetized experimental cat models. After the elevation of MABP during the increased infratentorial ICP, frontal cortical and potine rCBF, AEPs were recorded every 30 minutes. The results suggest that the elevating the MABP to improve cerebral perfusion pressure before irreversible change occurs in the brain may preserve cerebral function. We conclude that if the volume of the space in the posterior fossa that is occupied by the mass can be estimated, brain damage from low rCBF and brain compression due to intracranial hypertension can be prevented by the elevation of MABP before irreversible damage of the brain occurs.
Animals ; Blood Pressure* ; Brain ; Brain Stem ; Cats ; Evoked Potentials, Auditory* ; Humans ; Intracranial Hypertension ; Intracranial Pressure* ; Perfusion

The authors report a case of a 24-year-old man with unilateral sphenoid dysplasia in the absence of NF-I. Preoperatively, the patient was presented with pulsating exophthalmos and headache. The patient underwent cranioorbital sphenoid wing reconstruction with split calvarial bone graft. Postoperatively, he showed relieved headache and significant reduction of exophthalmos by exophthalmometry. There were no evidence of osteomyelitis and neurologic complication.
Exophthalmos ; Headache ; Humans ; Neurofibromatoses* ; Neurofibromatosis 1* ; Osteomyelitis ; Transplants ; Young Adult

Metastatic adenocarcinoma to the brain usually appears low-to-moderate attenuation on non-enhanced computed tomography. However, metastatic mucinous adenocarcinoma shows strikingly high attenuation, even simulating hemorrhage in some cases. We present a rare case of a mucin-containing metastatic adenocarcinoma of the rectum mimicking cerebral hemorrhage.
Adenocarcinoma ; Adenocarcinoma, Mucinous* ; Brain ; Cerebral Hemorrhage* ; Hemorrhage ; Mucins* ; Rectum

OBJECTIVE: The purpose of this study was to objectively assess the efficacy of superficial temporal artery to middle cerebral artery (STA-MCA) bypass surgery using Technetium (Tc)-99m-ethyl cysteinate dimer (ECD) single photon emission computed tomography (SPECT) in patients who underwent STA-MCA bypass surgery. MATERIALS AND METHODS: Brain perfusion SPECT images obtained at baseline and after the administration of acetazolamide were reconstructed using statistical parametric mapping in 23 patients, both before and after STA-MCA bypass surgery. The clinical outcomes of the surgery were also recorded and compared with the hemodynamic changes. A voxel with an uncorrected p-value of less than 0.001 was considered to be statistically significant. RESULTS: SPECT images of the territory supplied by the bypass graft showed an increase in both cerebrovascular flow and reserve at baseline, and the increase was significantly higher following the administration of acetazolamide. All patients showed improvement of clinical symptoms and increased blood flow to the left temporal, parietal, and frontal cortices as well as the thalamus. CONCLUSION: Brain SPECT effectively and objectively demonstrated the improved outcomes of STA-MCA bypass surgery, and thus may be used in postoperative analyses.
Acetazolamide/diagnostic use ; Adult ; Aged ; Brain/*radionuclide imaging ; Brain Mapping/methods ; Carotid Stenosis/surgery ; *Cerebral Revascularization ; *Cerebrovascular Circulation ; Cysteine/analogs & derivatives/diagnostic use ; Female ; Follow-Up Studies ; Humans ; Image Processing, Computer-Assisted ; Intracranial Arteriosclerosis/surgery ; Male ; Middle Aged ; Middle Cerebral Artery/*surgery ; Models, Statistical ; Organotechnetium Compounds/diagnostic use ; Predictive Value of Tests ; Radiopharmaceuticals/diagnostic use ; Temporal Arteries/*surgery ; Tomography, Emission-Computed, Single-Photon/*methods ; Treatment Outcome

OBJECTIVE: Cerebral hyperperfusion syndrome after extracranial-intracranial(EC-IC) bypass is a rare event but it may be disastrous. It can cause vomiting, confusion, seizure and intracerebral hemorrhage. We report 11 cases of hyperperfusion syndrome after EC-IC bypass surgery for recent 5 years in detail. METHODS: Authors performed EC-IC bypass surgery for augmentation of cerebral blood flow in 60 patients for recent 5 years. In 60 patients of EC-IC bypass procedures, we experienced 11 cases of hyperperfusion syndrome. It was observed that hyperfusion induced headache and vomiting in 2 cases, seizure in 1 case, temporary neurologic deficit in 5 cases, and intracerebral hemorrhage in 3 cases. RESULTS: All patients except three cases of intracerebral hemorrhag recovered completely. Five patients with temporary neurologic deficit improved within maxmum of 10days. In three cases of intracerebral hemorrhage, emergency hematoma removal was performed. Two of them, with moyamoya disease, recovered with minor neurologic deficit. The other, with traumatic intracarotid artery injury died. CONCLUSION: Hyperfusion syndromes may be due to relative hyperperfusion of a cerebral hemisphere in which autoregulation had been impaired because of preoperative chronic hypoperfusion. We strongly recommend that revascularization is deferred to 8 weeks till impaired autoregulation is restored, and meticulous blood pressure control should be done in the postoperative course of EC-IC bypass surgery.
Arteries ; Blood Pressure ; Cerebral Hemorrhage ; Cerebrum ; Emergencies ; Headache ; Hematoma ; Homeostasis ; Humans ; Moyamoya Disease ; Neurologic Manifestations ; Seizures ; Vomiting

OBJECTIVES: The purpose of this study is to evaluate the radiological charactersitics related to the formation of peritumoral edema in meningiomas. METHODS: Fifty patients with meningioma were examined by magnetic resonance images and cerebral angiography. The predictive factors associated peritumoral edema, such as, tumor size, peritumoral rim (cerebrospinal fluid cleft), shape of tumor margin, signal intensity of tumor in T2WI, and pial blood supply were evaluated. RESULTS: Tumor size, peritumoral rim and pial blood supply correlated with peritumoral edema on univariate analyses. But in multivariate analyses, pial blood supply was statistically significant as a factor for peritumoral edema in meningioma. CONCLUSION: In our results, pial blood supply is significant contributing factor for peritumoral edema in meningioma.
Cerebral Angiography ; Edema* ; Humans ; Meningioma* ; Multivariate Analysis