Stereotactic radiosurgery, including gamma knife radiosurgery (GKS), can in rare cases result in de novo cavernous malformations (CMs). Here, we present a case of de novo CM induced by GKS following treatment of a cerebellar arteriovenous malformation (AVM). A 48-year-old woman was diagnosed with left unilateral Moyamoya disease. Conventional cerebral angiography also revealed an AVM in the left cerebellum. The patient underwent GKS using a 50% isodose of 15 Gy at the margin of the left cerebellar AVM. Magnetic resonance imaging (MRI) taken 3 years after GKS revealed small chronic hemorrhages with perilesional edema in the left cerebellum. Five years later, the lesions became aggravated, but were asymptomatic. Eight years following GKS, the patient was admitted complaining of headache and dizziness. Brain MRI revealed a 1.3cm hemosiderin deposit with an inner hyperintense nodular portion that was enhanced in the left cerebellum. An open craniotomy was performed and the mass was removed, from which pathological findings were compatible with those for CM. The patient recovered to the prehemorrhagic state. This case shows that De novo CMs can rarely develop after radiosurgery. Most CMs have been reported to develop following radiosurgery for brain tumors. As shown in this patient, CMs can also develop after radiosurgery for cerebellar AVM in adults.
Radiosurgery

To determine the degree of variability among the host plant species in their abilities to become colonized by arbuscular mycorrhizal fungi (AMF), the inoculum for AMF was collected from the various sites in Korea and was inoculated to the three horticultural plants; Tagetes patula, Torenia fournieri, and Salvia splendens. After 4-month growth under greenhouse, mycorrhizal root colonization rates and spore density were measured. The roots of T. patula showed higher colonization rate than both plants of T. fournieri and Salvia splendens. The mycorrhizal root colonization was influenced by both of the AM fungal inoculum and the host species or their interactions. The combination of the host and fungal species was suggested to be important for the application of AMF to horticultural crops.
Colon ; Fungi ; Korea ; Plants ; Salvia ; Spores ; Tagetes

BACKGROUND: Cicletanine bydrochloride is a newly developed anti-hypertensive agent. The presence of a furopyridine group characterizes its uncommon chemical structure as an antihypertensive molecule. This clinical trial was performed to confirm the efficacy and safety of cicletanine for the treatment of hypertension as a monotherapy. METHODS: In order to investigate the efficacy and safety of oral cicletanine, a now class of antihypertensive durgs, the furopyridines, on essential hypertension, a single daily dose of 50mg to 100mg cicletanine was administered in 46 hypertensive patients with diastolic blood pressure in the range of 95mmHg-115mmHg. The patients were asked to cut off other anti hypertensive agents for 10 weeks prior to this clinical trial. Blood pressure and heart rate were measured every 4 weeks. The complete blood count, blood chemistry done by SMA-12, serum electrolytes and urinalysis were performed at the 12th week of therapy. RESULTS: 1) Baseline blood pressures after 2 weeks of placebo at sitting and standing positions were 158.7+/-16.1/102.9+/-6.2 and 148.7+/-14.5/102.7+/-6.7mmHg, respectively. The overall slope which represents the tendency of blood pressure decline over the treatment period with cicletanine for all the patients in each position are as follows ; -0.726(SE : 0.150) for sitting systolic blood pressure(BP), -0.390(SE : 0.080) for sitting diastolic BP, -0.214(SE : 0.183) for standing systolic BP and -0.341(SE : 0.139) for standing diastolic BP. 2) The slope of sitting systolic BP line in cicletanine 100mg treated group was significantly stiffer than that of cicletanine 50mg treated group(-0.445 vs -1.021, p=0.0336). 3) There were no significant interval changes in heart rate over the treatment period. 4) There were no significant interval changes in blood chemistry, electrolytes, hematologic findings and urinalysis over the treatment period. 5) Several side effects were observed in six patients(epigastric discomfort in 4, easy fatigue and insomnia in one patient, respectively). CONCLUSION: Treatment with cicletanine was well-tolerated and the incidence of side effects was relatively low. Because of its unique anti-hypertensive mechanism and moderated antihypertensive effects, cicletanine may be well suited in the treatment of hypertension combined with other classes of antihypertensive agents.
Antihypertensive Agents ; Blood Cell Count ; Blood Pressure ; Chemistry ; Electrolytes ; Fatigue ; Heart Rate ; Humans ; Hypertension ; Incidence ; Sleep Initiation and Maintenance Disorders ; Urinalysis

The ischemic penumbra is defined as functionally impaired but salvageable ischemic brain tissue surrounding an irreversibly damaged core. Therefore, rapid and precise identification of the penumbra is of considerable interest for decision-making in acute stroke treatment. The region with perfusion abnormality but no diffusion lesion (the so-called diffusion-perfusion mismatch) identifies tissue that is hypoperfused but that not yet experienced advanced bioenergetic failure and represents the penumbra. Thus, diffusion-perfusion mismatch are predicted to have the most lesion growth and may benefit most from any perfusion-altering therapies. The time window available for salvage of the penumbra in selected patients may be much longer than the traditional, presumed 3- to 6-hour window and that diffusion-perfusion MRI has the ability to identify these patients. Multimodal MRI allows therapeutic decisions to be based on individual patient pathophysiological information, allowing the time window to be extended in appropriate patients.
Brain ; Diffusion ; Energy Metabolism ; Humans ; Magnetic Resonance Imaging* ; Perfusion ; Stroke*

BACKGROUND: The angiotensin-converting enzyme inhibitors have been found to be safe and efficacious in the treatment of essential hypertension. Fosinopril is the first angiotensin-converting enzyme inhibitor from a new class of agents containing phosphorus. This drug is known to be metabolized to almost and equal extent by the hepatic and renal pathways. METHODS: This study was performed to investigate the efficacy and safety of oral fosinopril, a new class of phosporus-containing angiotensin converting enzyme inhibitor, on essential hypertension. A single daily dose of 10mg to 20mg fosinopril was administered in 21 hypertensive patients with diastolic blood pressure in the range of 95mmHg-115mmHg while off all other anti-hypertensive agents for 10 weeks. Blood pressure and heart rate were measured every 4 weeks. The complete blood count, blood chemistry by SMA-12, serum electrolytes and urinalysis were performed at 12th week of therapy. RESULTS: 1) Baseline systolic and diastolic blood pressures after 2 weeks of placebo at sitting position were 158.8+/-15.7 and 99.4+/-6.3mmHg respectively. There was a statistcally significant reduction of blood pressure after 4 week treatment of fosinopril which was maintained up to 12 weeks of follow-up(158.8+/-15.7-99.4+/-6.3mmHg vs 139.3+/-18.2/86.6+/-10.3mmHg, p<0.05). 2) The proportion of responders defined by diastolic blood pressures less than 90mmHg or decline more than 10mmHg at 4, 8 and 12 weeks after treatment with fosinopril were 90.5, 95.2, and 95.2% respectively. 3) THere were no significant changes in blood chemistry, serum electrolytes, hematologic findings and heart rate over the treatment period. 4) Three patients experienced severe non-productive cough that required to discontinue the medication. CONCLUSION: In patients with mild to moderate hypertension, once-daily fosinopril(10mg and 20mg) provided significant anti-hypertensive effects without serious side effects. The 10mg dose was effective in majority of patients and may be considered as a starting dose.
Angiotensin-Converting Enzyme Inhibitors ; Antihypertensive Agents ; Blood Cell Count ; Blood Pressure ; Chemistry ; Cough ; Electrolytes ; Fosinopril* ; Heart Rate ; Humans ; Hypertension ; Peptidyl-Dipeptidase A ; Phosphorus ; Urinalysis

Coarctation of aorta is a rare cause of secondary hypertension, and premature death will occur if no appropriate treatment is given. The only effective treatment was surgery before 1980, but restenosis was frequent. Several works on percutaneous transluminal angioplasty of the disease were reported. In patients with previously operated recoarctation, there is no doubt that balloon angioplasty is now the first choice of the therapy because of the surgical risks of reoperation. Nevertheless, there has still been some controversy regarding the application of this therapy to native coarctation, because of the potential risk of aortic disruption and the high incidence of restenosis. There have been some clinical reports of successful stent implantation for coarctation without major complications since 1991. We report on our experience with balloon-expandable stent implantation for native coarctation of the aorta in a 23-year-old man with congenital mitral stenosis. Aortogram showed a coarcted aortic segment of 3 mm in diameter and 25 mm long just distal to the left subclavian artery. The peak systolic pressure gradient across the coarctation before stent implantation was 100 mmHg. Stent implantation was performed with 14 X 40 mm balloon with Palmaz P308 stent. The peak systolic pressure gradient decreased to zero and the diameter of the coarctation of aorta increased to 14 mm after stent implantation immediately. The patient tolerated well and no significant complications were encountered during the procedure.
Angioplasty ; Angioplasty, Balloon ; Aortic Coarctation* ; Blood Pressure ; Humans ; Hypertension ; Incidence ; Mitral Valve Stenosis* ; Mortality, Premature ; Reoperation ; Stents* ; Subclavian Artery ; Young Adult

Coarctation of aorta is a rare cause of secondary hypertension, and premature death will occur if no appropriate treatment is given. The only effective treatment was surgery before 1980, but restenosis was frequent. Several works on percutaneous transluminal angioplasty of the disease were reported. In patients with previously operated recoarctation, there is no doubt that balloon angioplasty is now the first choice of the therapy because of the surgical risks of reoperation. Nevertheless, there has still been some controversy regarding the application of this therapy to native coarctation, because of the potential risk of aortic disruption and the high incidence of restenosis. There have been some clinical reports of successful stent implantation for coarctation without major complications since 1991. We report on our experience with balloon-expandable stent implantation for native coarctation of the aorta in a 23-year-old man with congenital mitral stenosis. Aortogram showed a coarcted aortic segment of 3 mm in diameter and 25 mm long just distal to the left subclavian artery. The peak systolic pressure gradient across the coarctation before stent implantation was 100 mmHg. Stent implantation was performed with 14 X 40 mm balloon with Palmaz P308 stent. The peak systolic pressure gradient decreased to zero and the diameter of the coarctation of aorta increased to 14 mm after stent implantation immediately. The patient tolerated well and no significant complications were encountered during the procedure.
Angioplasty ; Angioplasty, Balloon ; Aortic Coarctation* ; Blood Pressure ; Humans ; Hypertension ; Incidence ; Mitral Valve Stenosis* ; Mortality, Premature ; Reoperation ; Stents* ; Subclavian Artery ; Young Adult

Surgical treatment of 24 patients with chronic intractable pain from head and neck cancer was reviewed in the study. Pain relief is not expected with conventional treatments designed to control the primary disease in advanced head and neck cancer. Effectiveness of neurosurgical procedures such as radiofrequency trigeminal rhizotomy, posterior cervical rhizotomy and medullary tractotomy for relief of intractable cancer pain is emphasized in the paper. Trigeminal radiofrequency rhizotomy is the treatment of choice for relieving the uncontrollable pain in the facial area. Trigeminal rhizotomy and cervical rhizotomy or medullary tractotomy are helpful for facial pain extending into the neck. Glossopharyngeal rhizotomy is seldom used but is useful for pain in the pharynx.
Facial Pain ; Head and Neck Neoplasms ; Head* ; Humans ; Neck Pain* ; Neck* ; Neurosurgical Procedures ; Pain, Intractable ; Pharynx ; Rhizotomy

No abstract available.
Central Nervous System*