Differential diagnosis of Alzheimer's disease (AD) and vascular dementia(VaD) has an important bearing on the diagnosis and management of patients with dementia. This article provides a guideline for the differential diagnosis through 1) history taking, 2) neurological examination, 3) neuropsychological tests, and 4) neuroimaging studies. VaD consists of etiologically and clinically heterogeneous subtypes that include multi-infarct dementia (MID), single strategic infarct dementia, and subcortical vascular dementia. Patients with MID and single infarct dementia con be easily differentiated from patients with AD. However, clinical manifestations of subcortical vascular dementia can mimic those of AD, which may lead primary physicians to misdiagnose subcortical vascular dementia as AD. The issue of differential diagnosis is further complicated by the fact that many patients may have AD with concomitant VaD (mixed dementia).
Alzheimer Disease* ; Dementia ; Dementia, Multi-Infarct ; Dementia, Vascular* ; Diagnosis ; Diagnosis, Differential* ; Humans ; Neuroimaging ; Neurologic Examination ; Neuropsychological Tests

In shape and dimensions, the tibial plateaus are asymmetric with the larger medial tibial plateau and both have a posterior inclination with respect to the shaft of the tibia. Maximizing tibial coverage is an impotant consideration in total knee arthroplasty to provide stahility and load transfer and to improve long-term survival rate of the implants. Most tihial tray designs are symmetric, but several asymmetric designs are available. We evaluated the proximal tibial resection surface during total knee aithroplasty to delineate the tibial plateaus in korean. After tihial bone cut during 100 TKA procedures, the outline of tibial resection suiface was traced and rotational axis of true tibial component was marked intraoperatively. A line was drawn at the maximal anteroposterior (AP) diameter of lateral tibial condyle with parallel to rotational axis of component, and then a transverse axis was drawn at the midpoint of maximal AP diameter of 1ateral tibial condyle. Anteroposterior 10, 20, 30., 40% and midpoint from the media1 and lateral peripheries were calculated manually. The average AP medial 10, 20, 30 and 40% dimensions were 34.7, 43.8, 48.0 and 43.2mm, respectively. The average AP lateral 10, 20, 30 and 40% dimensions were 30.2, 38.4, 42.0 and 40.9mm, respectively. The ratio of medial/lateral AP dimensions 10, 20, 30 and 40% from periphery were 116.9, 114.7, 114.5 and 106.4%, respectively. From these data, we know the asymmetry of the proxirnal tibia1 plateaus in korean. We hope that rnore data will be ohtained in multicenter studies and it will help us to select tibia1 tray and to design the tibial component in korean. But, more accurate standard measures will he need to minimize an error of measurements.
Arthroplasty* ; Axis, Cervical Vertebra ; Hope ; Knee* ; Survival Rate ; Tibia

No abstract available.
Animals ; Rats*

Kerion celsi is severe inflammatory type of tinea capitis. It occurs almost exclusively in pre-pubertal children. We report a case of Kerion celsi occuring in a 79-year-old woman. Culture of infected hair on Sabouraud glucose agar showed Microsporum canis Farnily history and fungus study suggested the importance of indirect route in Microsporum canis infection.
Agar ; Aged ; Child ; Female ; Fungi ; Glucose ; Hair ; Humans ; Microsporum* ; Tinea Capitis*

No abstract available.

No abstract available.
Aneurysm, False* ; Blood Pressure Monitors* ; Blood Pressure* ; Compression Bandages* ; Humans ; Radial Artery*

Spontaneous spinal epidural hematoma is a rare entity. Various definitions for spontaneous epidural hematoma have been reported in the literature. The expression of nontraumatic spinal epidural hematoma seems to be less ambiguous and includes idiopathic hematomas and hematomas secondary to coagulopathy, vascular malformations, and tumors. We report three cases of nontraumatic spinal epidural hematomas observed from 1991 to 2000. The causes of the spinal epidural hematomas were not clear in two cases among them, but in the another one case, the cause was determined to be an acquired coagulopathy. We reviewed 24 cases reported in the Korean Journal of Neurosurgery and our three cases with particular emphasis on the various causes such as coagulopathy, vascular malformations and tumors. Among the 27 cases, numerous causes were detected such as three cases of vascular malformation, one case of anticoagulant treatment, five cases of combined lumbar disc herniation, two cases associated with pregnancy and postpartum, one case associated with hypertension, and one case associated with ossification of ligamentum flavum. No causes were detected in the ten cases. The authors reviewed the literature.
Hematoma ; Hematoma, Epidural, Spinal* ; Hypertension ; Ligamentum Flavum ; Neurosurgery ; Postpartum Period ; Pregnancy ; Vascular Malformations

We report a case of eccrine adenocarcinoma in 65-year-old man who showed tender, painful, dark-brown colored, and verrucous surfaced tumor on the left neck for 18 months. Hisopathologic examination revealed large atypical cell masses with a tubular cystic, or adenoid pattern in the demis and it was difficult to differentiate from metastatic adenocarcinoma. Materials in the lumina revealed PAS positive, diastase resistant, alcian blue positive at pH 2.5 but negative at pH 0,4 Electron microscopy revealed that tumor cells contained secretory vacuoloes and microvilli projected into intercellular space. Around the cells, myoepithelial cell was seen. After radiotherapy and chemotherapy, tumor size was reduced transiently but 2 months later, tumor was more spread.
Adenocarcinoma* ; Adenoids ; Aged ; Alcian Blue ; Amylases ; Drug Therapy ; Extracellular Space ; Humans ; Hydrogen-Ion Concentration ; Microscopy, Electron ; Microvilli ; Neck ; Radiotherapy

A total of 47 preoperative CT scans in patients with renal cell carcinoma were retrospectively reviewed and compared with surgical findings to assess the accuracy of CT for determining the perinephric tumor extension. CT criteria for perinephric extension were hazy ill-defined tumor margin, perirenal nodule and fascial thickening. Regardless of the tumor stage, the accuracy of CT in detecting perinephric extension was 76.6%(36/47), with a sensitivity of 88.9% (16/18) and specificity of 68.9% (20/29). The cause of understaging (n=2) was microscopic infiltration of the perinephric space. The causes of overstaging were tumor infiltration to the renal capsule (n=5), partial adhesion with the perinephric fat (n=3) and renal vein thrombosis (n=1). A smooth clear tumor margin is highly reliable sign for stage I but infiltrative findings onto renal capsule and perirenal fat could be considered stage I.
Carcinoma, Renal Cell ; Humans ; Renal Veins ; Retrospective Studies ; Sensitivity and Specificity ; Thrombosis ; Tomography, X-Ray Computed

A total of 47 preoperative CT scans in patients with renal cell carcinoma were retrospectively reviewed and compared with surgical findings to assess the accuracy of CT for determining the perinephric tumor extension. CT criteria for perinephric extension were hazy ill-defined tumor margin, perirenal nodule and fascial thickening. Regardless of the tumor stage, the accuracy of CT in detecting perinephric extension was 76.6%(36/47), with a sensitivity of 88.9% (16/18) and specificity of 68.9% (20/29). The cause of understaging (n=2) was microscopic infiltration of the perinephric space. The causes of overstaging were tumor infiltration to the renal capsule (n=5), partial adhesion with the perinephric fat (n=3) and renal vein thrombosis (n=1). A smooth clear tumor margin is highly reliable sign for stage I but infiltrative findings onto renal capsule and perirenal fat could be considered stage I.
Carcinoma, Renal Cell ; Humans ; Renal Veins ; Retrospective Studies ; Sensitivity and Specificity ; Thrombosis ; Tomography, X-Ray Computed