CT was proved to be the most accurate diagnostic tool in the analysis of brain metastasis than any otherclassical methods. The authors studied CT findings of intracranial metastasis in 31 cases proven clinically andhistologically. The results were as follows; 1. Age distribution of the cases was 15 males and 16 females withpeak age of 6th decade in males and 4th decade in females. 2. Metastatic lesions were multiple in 18 cases andsingle in 13 cases. 3. The most common degree of edema was grade III, 43% of total metastatic foci. Markededematous low densities with relatively small nodular high densities in precontrast scan and variable contrastenhancement of the nodular densities were the most frequent CT findings. 4. No specific characterstics accordingto the primary cancer was noted. All four cases of choriocarcinoma showed hemorrhagic tendency.
Age Distribution ; Brain ; Choriocarcinoma ; Edema ; Female ; Humans ; Male ; Neoplasm Metastasis ; Pregnancy

We report a rare case of brain abscess associated with intracerebral hematoma in a child at the age of 3. A 3 years old female child has been suffered from the cellulites with pustule on her right leg since 3 weeks before, which has aggravated gradually, and developed acute bacterial meningitis for 2 weeks before transfer to Department of Neurosurgery. The acute bacterial meningitis has been treated for 2 weeks in Pediatric Department. The brain CT revealed a small brain abscesses in the occipital region bilaterally. With methicillin, the clinical progress including C.S.F. findings has got improvement, which has been almost complete. We found the staphylococcus from the pustule on her right leg by smear and culture. At that time, 3 weeks since the onset, suddenly vomiting, consciousness change(drowsy to semicomatose), left hemiparesis developed. Immediate brain CT revealed multiple abscess in both occipital poles with bulky intracerrebral hematoma in right perietooccipital region. Immediate craniectomy was performed for removal of intracranial hematoma, which was ca 50cc in amount, at first, and bilateral trephination with aspiration and drainage for the multiple brain abscess at second. The postoperative course was satisfactory with mannitolization and antibiotic treatment. The recovery was dramatic one.
Abscess ; Brain Abscess* ; Brain* ; Child* ; Child, Preschool ; Consciousness ; Drainage ; Female ; Hematoma* ; Humans ; Leg ; Mannitol ; Meningitis, Bacterial ; Methicillin ; Neurosurgery ; Paresis ; Staphylococcus ; Trephining ; Vomiting

CT is a valuable method in determining number, location and extent of lesions, although a definite diagnosisis often not possible on CT. In intracranial tuberculosis, CT was helpful in the diagnosis, assessing the degreeof hydrocephalus and evaluating the effectiveness of antituberculous therapy. Twenty-one cases of clinical lyproven intracranial tuberculosis were studied by CT in our hospital during last 3 years. Of them, eighteen caseswere tuberculous meningitis and the rests were tuberculoma. The results were as follows; 1. Tuberculous meningitis presented the following three patterns of CT findings according to its disease process. a. In early stage of the disease, suspcious multiple isodense small nodules in the cerebral and cerebellar hemispheres showed dense enhancement in postcontrast scan representing miliary tubercles. b. In later stage of the disease, precontrastscan showed partial or total obliteration of the basal and sylvian cisterns with mild dilatation of ventricularsystem. Postcontrast scan showed dense enhancement of basal and sylvian sisterns. This type of finding was themost common in our series. c. Moderate to marked dilatation of ventricle with or without a cluster ofcalcifications in suprsella area on precontrast scan was seen in far later stage or as a sequellae of the disease. No enhancement was noted in postcontrast study. 2. Tuberculoma showed an isodense or slightly hyperdense area inthe cerebral or cerebellar hemisphere with associated minimal edema in precontrast study. Postcontrast scan showeda small ring enhancement with central lucent area.
Diagnosis ; Dilatation ; Edema ; Hydrocephalus ; Methods ; Tuberculoma ; Tuberculosis ; Tuberculosis, Meningeal

Hydroxyapatite particle(HA) impregnated polymethylmethacrylate(PMMA) bone cement was fabricated in order to induce bony tissue ingrowth into the pores left behind by the resorption of the HA. The amount of HA was 0, 10, and 30% by weight. After mixing the HA with bone cement it was cast in a 4mm inside diameter glass under(10mm long). Each specimen was cut into half and used for in vitro and in vivo experiment. Diametral and compressive mechanical test were made to evaluate it's mechanical properties. SEM(scanning electron microscope) and ESCA(electron spectroscopy for chemical analysis) were used to evaluate the surface characteristics of the specimen. Push-out test and histologic studies were made after implanting the specimens for 6 weeks in the distal portion of rabbit femur. The mechanical test results show that the average flexural and diametral strength decreased linearly with the increased amount of HA significant(p < 0.05). The SEM and qualitative analysis using ESCA of the implant specimens showed no definite exposure of HA particles due to PMMA covering the surface. The surface of the implanted specimens were ground for histologic comparative analysis and the halves of each sample were decalcified. The interfacial shear strength of the implanted specimens showed significant increases in the 30% HA specimens compared with the 0% ones but the 10% specimens did not show any difference. However, there was also no statistically significant(p>0.05) difference between nondecalcified and decalcified specimens in each 10% and 30%, although the latter showed higher interfacial shear strength. Histologic observation showed little evidence of bone ingrowth into HA, but not remarkable. In conclusion, this study could not confirm the earlier results of the bone particle impregnated bone cement without surface grinding since the HA particles were not exposed at the surface by casting it into a glass tube.
Durapatite ; Femur ; Glass ; In Vitro Techniques ; Polymethyl Methacrylate ; Shear Strength ; Spectrum Analysis

We report a rare case of cervical intradural extramedullary neurilemmoma associated with extradural cavernous angioma in adolescent male patient. This 19-year-old man complained of increasing weakness of left extremities with pain and numbness, starting upwards from the region of left leg since 2 months before, which has aggravated gradually and developed to right side. Neither the patient nor any family member displayed the stigmata of spinal tumor. Neurological examination showed spastic qudriparesis, more severe on left side, disclosed absent vibratory sense and diminution of pain and touch below level of cervico-thoracic junction. Myelogram demonstrated a large filling defect at the C4-6 vertebral level, which was interpreted as an intradural extramedullary or extradural mass. Laminectomy was performed 4 days after admission. At surgery, reddish, diffuse and well demarcated friable mass was found extradural space at the level of C4-6. But post-operative course was not improved for 2 weeks, so we are performed second operation after identified another intradural extramedullary mass by spinal CT. A total removal of tumor mass was accomplished at second procedure. Hostological examination confirmed the diagnosis of cavernous angioma at the extradural mass, neurilemmoma at the intradural extramedullary mass. The post-operative course was satisfactory.
Adolescent ; Christianity ; Diagnosis ; Extremities ; Hemangioma, Cavernous* ; Humans ; Hypesthesia ; Laminectomy ; Leg ; Male ; Muscle Spasticity ; Myelography ; Neurilemmoma* ; Neurologic Examination ; Young Adult

We experienced a case of an extradural cyst of lumbar spine associated with a freshly ruptured intervertebral disc on L3-4 intervertebral space. A 22-years old Korean female was admitted to hospital because of low back pain radiating to the both legs for about 7 weeks, after mild trauma in the running bus. The low back pain and bilateral sciatic pain had aggravated by coughing and sneezing, similar to the protruded intervertebral disc. Neurological examination revealed the signs similar to those of the protruded intervertebral disc. Simple X-ray films of lumbar spine revealed scoliosis, stretching of lumbar lordotic curve. Myelography showed a complete block from lower one third of L3 vertebral body to upper one fourth of L4 vertebral body by spinal puncture of L2-3 and L5-S1 interspace, respectively. We performed a total laminectomy of L3-4 for the above lesion. The operative finding showed an extradural cyst adhesive with L3 nerve root sheath and freshly ruptured intervertebral disc on L3-4 interspace. The extradural cyst was 2.0x1.5x0.5cm in size and its surface was not smooth but coarse. The contents of cyst was yellowish brown fluid(xanthochromic). We removed the extradural cyst completely and the ruptured(tiny tagged) contents of nucleus pulposus. The post-operative course was satisfactory, dramatically. The microscopic findings of the extradural cyst showed a simple cyst including a profuse pigments of hemosiderin, highly suggested one formed from and epidural hematoma by trauma.
Adhesives ; Cough ; Female ; Hematoma ; Hemosiderin ; Humans ; Intervertebral Disc ; Laminectomy ; Leg ; Low Back Pain ; Myelography ; Neurologic Examination ; Running ; Scoliosis ; Sneezing ; Spinal Puncture ; Spine ; X-Ray Film ; Young Adult

Primitive neuroectodermal tumors(PNETs) may be a term established recently for a tumor group(?) which is composed of prominent undifferentiated cells with variable foci of differentiation along glial and neuronal lines. The authors experienced a case of 'primitive glioma' regarded as a subclass of PNETs, in a 14 year old boy who had suffered from headache and vomiting for about 40 days prior to admission. Brain CT and angiographic studies reveal a huge hypovascular mass lesion with multiple cysts in the left frontal lobe. The patient was satisfactorily treated by total tumor excision and following irradiation, and is now in follow up. We present the case with review of the literatures.
Adolescent ; Brain ; Follow-Up Studies ; Frontal Lobe ; Headache ; Humans ; Male ; Neural Plate ; Neuroectodermal Tumors, Primitive* ; Neurons ; Vomiting

Intracranial calcification is relatively common, but calcification of chronic subdural hematoma is rare condition. Nevertheless, already in 1884 Von Rokitansky had described a calcified chronic subdural hematoma found at autopsy. Subsequently Lewis(1889), Elsner(1896), and O'sullivan(1925) mentioned calcification of intracranial hematoma. In 1930, Goldham reported the first case treated by operation. A 15-year-old Korean male was admitted to this hospital because of a episode of generalized epileptic seizure, one day before admission. Past history was unknown about head injury and his past birth condition. Patient has complained weakness of right upper and lower extremely since his infant. Neurological examination revealed the left hemiparesis, but others were normal. Skull X-ray films showed dense conglomerated calcific density with surrounding rim like lucency in left fronto-parietal region. Left carotid angiogram revealed no abnormalities except hypoplasia of left hemisphere. Brain computed tomogram demonstrated hyperdense subdural mass surrounding decreased parenchymal density in left fronto-parietal region. A craniectomy was performed for removal of the calcified mass. A oval concaved bony hard mass was found in subdural space. The calcified bony hard mass was adherent with the surface of cortex by loose sonnective tissue. We removed the bony hard mass completely. The postoperative course was very satisfactory and seizure has not been appeared after discharge. Microscopic findings demonstrated ossification and fibrosis, consisting with old hematoma which showed up a calcification of chronic subdural hematoma.
Adolescent ; Autopsy ; Brain ; Child* ; Craniocerebral Trauma ; Epilepsy ; Fibrosis ; Hematoma ; Hematoma, Subdural, Chronic* ; Humans ; Infant ; Male ; Neurologic Examination ; Paresis ; Parturition ; Seizures ; Skull ; Subdural Space ; X-Ray Film

The meningioma constitutes 12 to 16 percent of all intracranial tumors. Generally, meningiomas arise from intracranial arachnoid villi and located intracranially. Extension of an intracranial meningioma onto the frontal and ethmoidal sinus occurs occassionally, but primary meningiomas of the frontal and ethmoidal sinus are extremely rare. The authors experienced a case of cystic, meningotheliomatous meningioma containing lamellated calcification involving of the lest frontal and ethmoidal sinus, which presented with protrusion of frontal bone and exophthalmos. In addition to our case, other types of extracranial meningioma are discussed with review of literature.
Arachnoid ; Exophthalmos ; Frontal Bone ; Meningioma*

The purpose of this study is to develop species-specific DNA probes and polymerase chain reaction (PCR) primers for detection and identification of Prevotella nigrescens (P. nigrescens) 9336. This study procedure includes (1) whole-genomic DNA extraction of P. nigrescens 9336 (2) construction of the genomic DNA library, (3) screening of strain-specific DNA probe by reverse dot Hybridization method, (4) confirmation of strain-specific DNA probe by Southern blot analysis, (5) determination of nucleotide sequences of strain-specific DNA probe. Thirty-five restriction fragments of P. nigrescens 9336 genomic DNA digested with the Hind III were obtained. Reverse dot hybridization and Southern blot analysis data showed that three of them, Pn10, Pn23, and Pn35, could be P. nigrescens 9336-specific DNA probes. These data indicated that these DNA probes could be useful in detection and identification of the P. nigrescens 9336.
Base Sequence ; Blotting, Southern ; Clone Cells* ; Cloning, Organism* ; DNA Probes* ; DNA* ; Gene Library ; Mass Screening ; Polymerase Chain Reaction ; Prevotella nigrescens* ; Prevotella*