Central neurocytoma, a cerebral intraventricular tumor, is usually benign. It frequently develops in the area of the foramen of Monro, and is usually attached to the septum pellucidum. Mild to moderate contrast enhancement is common. We encountered a case of central neurocytoma in a 60-year-old woman; the tumor arose from the atrium of the lateral ventricle, and extraventricular extension and malignant transformation were apparent. CT and MRI revealed a well-defined, slightly heterogeneous mass measuring 2.5x3x5cm with surrounding edema. There was strong contrast enhancement of the mass.
Cerebral Ventricles ; Edema ; Female ; Humans ; Lateral Ventricles ; Magnetic Resonance Imaging ; Middle Aged ; Neurocytoma* ; Septum Pellucidum

PURPOSE: To define the CT findings of inflammatory pseudotumor of the lung, and determine pathologiccorrelation. MATERIALS AND METHODS: We retrospectively analyzed the CT scans of seven patients withpathologically-proven (surgery:n=6; automated gun biopsy:n=1) inflammatory pseudotumor of the lung. Postcontrastscans were obtained in six cases, while one underwent only precontrast scanning. In all cases, these resultscorrelated with pathologic findings. RESULTS: In five cases, CT showed that irregular, spiculated nodules ormasses contacted with the pleura; in one, a well-defined nodule contacted with the fissure; and in one, there wasconsolidation. On postcontrast CT images, all six cases showed enhancement, with a central, low-density component. In four cases, ground-glass opacity surrounding the lesion was identified, and in three focal pleural thickeningadjacent to the lesion was noted. The predominant pathologic composition of the enhanced portions of the lesion,as seen on CT, was chronic inflammatory or spindle cells, and the angiogenesis of small vessels was also noted.Non-enhanced, central, low-density areas were accounted for by hemorrhaging, necrosis and the focal aggregation ofacute and chronic inflammatory cells. Surrounding gound-glass opacity corresponded pathologically to organizingpneumonia, cellular infiltration along the alveolar wall, and alveolar collapse. CONCLUSION: The CT features ofinlammatory pseudotumor of the lung were mainly peripheral irregular, spiculated nodule or mass, withcontrast-enhancement and a central low-density component, combined with surrounding ground-glass opacity. Allthese findings correlated well with pathologic findings.
Granuloma, Plasma Cell* ; Humans ; Lung* ; Necrosis ; Pleura ; Retrospective Studies ; Tomography, X-Ray Computed

In contrast to younger patients, old peoples frequently mainfest more than one pathologic process, mainly degenerative diseases and neoplasia. Nearly all have some degree of arteriosclerosis, even if this is not clinically diagnosed, and many have associated chronic cardiac, renal, hepatic, or pulmonary disease. The surgeon and the anesthesiologist must see theat their clinical decisions are tied to a physiologic understanding based on exact quantification of the specific hemodynamic, respiratiory, renal, and metabolic factors which may play a decisive role in influencing the final outcome to a major operative procedure. From May 1972 to Dec 1980, the Department of Anesthesiology, Hanyang University, College of Medicine had 517 geriatric patients(above 65 years) who received anesthesia and these were analyzed clinically according to age, sex, department, physical status, anesthetic technique and agent, anesthesia time, length of admission, laboratory studies(chest X-ray, EKG, arterial blood gas), and postoperative complications(mortality and causes of deathe). The results are as follows. 1) Out of 25,857 anesthetized patients 517(2.0%) were over 64 years of age and 290 were males(56.1%) and 227 females(43.9%). 2) In the surgical group, 246 cases (47.6%) were from general sugery: 81 cases(15.7%), orthopedic surgery: 78 cases (15.1%), urology: and 67 cases (12.9%), neurosurgery respectively. 3) In the classification of physical status, 33 cases(6.4%) were class 1, 269 cases(52.0%) class 2, 181 cases (35.0%) class 3, 28 cases (5.4%) class 4, and 6 cases (1.2%) class 5. Emergency cases were 137 cases(26.5%) and 380 cases (73.5%) were elective. 4) Concerning premedication-150cases(29.0%) were premedicated with atropine sulfate plus valium and 93 cases had no premedication. 5) There were 425 cases of general anesthesia (82.2%) and 92 cases of regional anesthesia (17.8%). The major anesthetic was halothane, 362 cases (70.0%). The technic in 419 cases( 81.0%) was circle type with endotracheal intubation. Anesthesia duration was within 1hour for 70 cases(13.5%), within 2 hours for 158 cases(30.0%), and within 3hours in 144 cases(27.9%). 6) Preoperative laboratory findings were as follows: The chest X-ray suggested that 199 cases (45.9%) were within normal limits, 56 cases (12.9%) had hypertensive heart disease, 56 cases (12.9%) had pulmonary tuberculosis, and 38 cases (5.1%) had senile lung fibrosis. The EKG which was done on 85% of the patients, ravealed that 193 cases (44.0%) were within normal limits, 61 cases(13.9%) showed left ventricular hypertrophy, and 38 cases(8.7%) had myocardial ischemia. In the preoperative arterial blood gas studies of 56 cases the results were almost all within normal limits. 7) Postoperative complications were as follows: 52 cases showed wound infection or bleeding, 20 cases had pneumonia, and 18 cases atelectasis. There were a number of miscellaneous complications. 8) The overall mortality rate was 5.8%. The difference of mortality rate related to the age was not statistically significant,(p>0.1) and the mortality rate related to physical status was statistically significant(p<0.005). 9) As the cause of death-11 cases (36.7%) had transtentorial herniation, 2 cases (6.7%) sepsis, 2 cases (6.7%) hypovolemia, and 1 case (3.3%) had pulmonary edema.
Anesthesia* ; Anesthesia, Conduction ; Anesthesia, General ; Anesthesiology ; Arteriosclerosis ; Atropine ; Classification ; Diazepam ; Electrocardiography ; Emergencies ; Fibrosis ; Halothane ; Heart Diseases ; Hemodynamics ; Hemorrhage ; Humans ; Hypertrophy, Left Ventricular ; Hypovolemia ; Intubation, Intratracheal ; Lung ; Lung Diseases ; Mortality ; Myocardial Ischemia ; Neurosurgery ; Orthopedics ; Pneumonia ; Postoperative Complications ; Premedication ; Pulmonary Atelectasis ; Pulmonary Edema ; Sepsis ; Surgical Procedures, Operative ; Thorax ; Tuberculosis, Pulmonary ; Urology ; Wound Infection

Mesenchymal chondrosarcoma is a rare malignant tumor of skeletal and extraskeletal origin, and which shows aggressive local behavior as well as a high metastatic potential. We report 3 cases of mesenchymal chondrosarcoma. Two cases were male and one was female. The ages ranged from 25 to 32 years(mean: 28 years). Tissue was obtained by wide excision in two patients, and incisional biopsy in one. The mass locaterd in the rib(case 1), orbital floor(case 2), and abdominal wall(case 3). Roentgenographically, the tumor resembles ordinary chondrosarcoma, showing osteolytic and obstructive appearance with stippled calcification. Grossly, the tumor was lobulating, solid fish-fleshy like mass with calcification and ossification. Histologically, the tumor shows characteristic bimorphic pattern composed of islands of well differentiated hyaline cartilage admixed with a cellular area of undifferentiated small cells. The small cells usually displayed a hemangiopericytoid or an alveolar pattern.
Biopsy ; Chondrosarcoma ; Chondrosarcoma, Mesenchymal* ; Female ; Humans ; Hyaline Cartilage ; Islands ; Male ; Orbit ; Ribs

Intravenous succinylcholine is often associated with adverse effects, including muscle fasciculation, postoperative myalgia, increased intraocular and intragastric pressure, along with potassium and creatinine phosphokinase, myoglobinuria, and disturbances in cardiac rate and rhythm. Several methods have been used to modify these side effects, the most popular of which has been the of subparalyzing doses of nondepolarizining relaxants prior to injection of succinylcholine. With such pretreatment however satisfactory muscular relaxation is often not achieve, necessitaing use of larger doses of succinylcholine becauses pretreatment renders the endplateless sensitive to succinylcholine; hence large doses of succinylcholine are necessary to ensure adquate degress of relaxation. The present investigation was undertaken to determine the effects of flunitrazepam on the adverse effects of succinylcholine. This paper covers the period from March, 1981 to March, 1982 in the Department of Anesthesiology, Hanyang University Hospital. The 45 subjects were divided into 3 groups: 1) propanidid (8mg/kg) with succinylcholine 2) flunitrazepam(0.03mg/kg) with succinylcholine 3) flunitrazepam(0.06mg/kg) with succinylcholine. None had existing neuromuscular disease nor were any patients receiving diazepam or any drug known to influence myoneural blocking agent. Patients with burns, muscle injury of muscle atrophy were excluded. In each group, the plasma concentration of potassium and creatinie phosphokinase was observed before and 10 minutes after use of succinylcholine. Also succinylcholine in duced myalgia, fasciculation, onset of loss of eyelid reflex and relaxation were observed and compared. The conclusions are as follows: 1) There were no significant changes of plasma concentration of potassium and creatinine phosphokinase in presuccinylcholine and 10 minutes postsuccinylcholine. Also any statistically significant changes were not observed in the comparison of the propanidid group and the flunitrazepam groups. 2) Flunitrazepam significantly diminished the incidence of postoperative muscle pain and it was shown that the degree of fasciculation has no relationship with succinylcholine induced muscle pain. 3) In the propanidid group, the onset of loss of eyelid reflex was most rapid(22+/-13 second). In the flunitrasepam 0.03mg/kg group, the onset of loss of eyelid reflex was statistically significant (p<0.05), as compared with the 0.06mg/kg group(42+/-27 second). 4) In all groups, excellent conditions of intubation were observed. Propanidid and flunitrazepam did not affect the magnitude nor duration of the succinylcholine neuromuscular block.
Anesthesiology ; Burns ; Creatinine ; Diazepam ; Eyelids ; Fasciculation ; Flunitrazepam* ; Humans ; Incidence ; Intubation ; Muscular Atrophy ; Myalgia ; Myoglobinuria ; Neuromuscular Blockade ; Neuromuscular Diseases ; Plasma ; Potassium ; Propanidid ; Reflex ; Relaxation ; Succinylcholine*