Malignant osteoblastoma is very rare tumor which shows histological findings of an aggressive pattern and benign clinico-radiological features, and also called as aggressive or pseudomalignant osteoblstoma. The authors experienced one csse of malignant osteoblastoma involving diaphysis of left humerus in 22-year old man. The patient is healthy and maintains his normal activity without recurrence over five years after complete excision of cystic mass, curettage and bone graft.
Curettage ; Diaphyses ; Humans ; Humerus ; Osteoblastoma ; Recurrence ; Transplants

No abstract available.
Syringomyelia*

No abstract available.
Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis*

Chordoma arising from the notochordal remnants is a rare primary bone tumor in the cervicosacral region and is even more unusual in the thoracic region. The authors experienced a case of thoracic chordoma and report its CT and MR findings.
Chordoma* ; Notochord

Chordoma arising from the notochordal remnants is a rare primary bone tumor in the cervicosacral region and is even more unusual in the thoracic region. The authors experienced a case of thoracic chordoma and report its CT and MR findings.
Chordoma* ; Notochord

BACKGROUND: A study was done to determine if there is any difference in the quality of anesthesia and time to reach maximum anesthesia between the induction of lumbar epidural anesthesia in the sitting and supine position in young male patients undergoing appendectomy. METHODS: We randomly divided 30 patients to 2 groups. An epidural catheter was inserted at L2~3 interspace. In group 1, with the patient sitting, 3 ml of 1% lidocaine with 5mcg/ml epinephrine was injected as a test dose via the epidural catheter, and then 3 minutes later, 0.5% bupivacaine 30 ml was given through the same catheter. After maintaining sitting position for 5 minutes, the patient changed to a supine position and the quality of anesthesia was assessed at 3-minute intervals for 30 minutes. In group 2, after the epidural catheter was inserted at the sitting position, the patient changed to a supine position immediately. Remaining procedures were the same. RESULTS: The two groups showed no difference in maximum cephalad spread of anesthesia and motor block. CONCLUSIONS: The position of the patient during induction of epidural anesthesia has no effect on the cephalad sensory and motor block.
Anesthesia ; Anesthesia, Epidural* ; Appendectomy ; Bupivacaine ; Catheters ; Epinephrine ; Humans ; Lidocaine ; Male ; Posture* ; Supine Position

No abstract available.
Animals ; Gene Expression* ; Hypothalamus* ; Immunohistochemistry* ; In Situ Hybridization* ; Rats* ; Vasopressins*

No abstract available.
Neuroectodermal Tumor, Melanotic

We report a case of genital swelling in a patient receiving continuous ambulatory peritoneal dialysis. A physical examination did not identify any defect. Ultrasonography revealed a large hydrocele, and surgical repair brought resolution of the genital swelling. Two months later, however, the genital swelling had recurred and was not improved until peritoneal dialysis was replaced by hemodialysis 3 months later.
Genitalia ; Humans ; Ligation ; Peritoneal Dialysis ; Peritoneal Dialysis, Continuous Ambulatory ; Physical Examination ; Renal Dialysis ; Testicular Hydrocele

PURPOSE: To compare clinical outcomes of infective and non-infective groups in revision total knee arthroplasty. MATERIAL AND METHODS: From December 1993 to December 2001, 29 cases of revision total knee arthroplasty were performed in 27 patients. The mean age at the time of surgery was 64.2 years (48~74). The average follow-up was 45.4 months (24~90). All cases were divided into two groups (fourteen noninfective and fifteen infective groups). The clinical results were evaluated according to range of motion, Hospital of Special Surgery score, Knee Society score and tibiofemoral angle. The causes of revision in noninfective group were aseptic loosening in eleven, instability in two, and femoral periprosthetic fracture in one. RESULTS: There was a significant improvement of range of motion, Hospital for Special Surgery Knee score and Knee Society score at the final follow-up compared with the pre-operative status. The above three evaluation criteria showed no significant difference between the two groups except higher further flexion in non-infective than infective group. Preoperative average tibiofemoral angle was varus 1.4degrees in non-infective group and valgus 2.6degrees in infective group (P<0.05). Postoperatively, the angles changed to be valgus 6.7degrees in non-infective group and valgus 6.8degrees in infective group(P>0.05). There were three complications in infective group, which were two reinfections, and one avulsion of osteotomized tibial tubercle. CONCLUSION: Preoperative planning, choice of proper implants, meticulous management of bony defect and soft tissue enabled successful results in infective group as well as non-infective group except less further flexion in infective group.
Arthroplasty* ; Follow-Up Studies ; Humans ; Knee* ; Periprosthetic Fractures ; Range of Motion, Articular