No abstract available.

Teratomas are neoplasm composed of a wide variety of tissues foreign to the organs or anatomic sites in which they arise. They generally arise in gonads but a few cases are described in extragonadal sites, such as sacro-coccygeal region, mediastinum, neck, and retroperitoneum. Most sacrococcygeal teratomas are encountered in infants, particularly in neonates, and a primary sacrococcygeal teratoma is a extremely rare neoplasm in adults. Recently, we experienced two cases of presacral teratomas arising in adult, therefore we present these cases with a brief review of the literatures
Adult* ; Gonads ; Humans ; Infant ; Infant, Newborn ; Mediastinum ; Neck ; Teratoma*

Tinea versicolor (TV) is a common fungal skin disease caused by the Malassezia species. This disease usually presents as hypopigmented- or hyperpigmented coalescing scaly macules, papules, patches or plaques on the trunk and upper arms. Herein, we report a rare clinical manifestation of TV in a 29-year-old man presenting with marked follicular, erythematous, and hyperkeratotic papules on the trunk with erythematous scaly macules and patches on the upper extremities with intermittently spared skin. We initially suspected pityriasis rubra pilaris, however, skin biopsy results and mycological examination revealed TV. Polymerase chain reaction-based sequence analysis revealed Malassezia globosa. The patient was successfully treated with oral itraconazole and topical terbinafine.
Adult ; Arm ; Biopsy ; Dermatomycoses ; Humans ; Itraconazole ; Malassezia* ; Pityriasis Rubra Pilaris* ; Pityriasis* ; Sequence Analysis ; Skin ; Tinea Versicolor* ; Tinea* ; Upper Extremity

Leiomyoma and adenomyosis of the uterus are the most common gynecologic disorders in an enlarged uterus. The characteristic US and MR findings in differentiation between both lesions were prospectively evaluated in 30 patients. Of 30 patients, 15 were leiomyomas, 6 were adenomyosises, 8 were leiomyomas and adenomyosises, and 1 was a normal pregnancy, histologically. The total number of leiomyom nodules were 49 while adenomyosises were 14 (9 diffuse and 5 focal). Among 49 myomas nodules, 36 were correctly diagnosed by sonography. The characteristic US findings of uterine leiomyoma were well defined nodules (36), hypoechoic peripheral rim (16), and whorl-like internal echoes (13). Forty four of the 49 myoma nodules were correctly diagnosed by MRI. The characteristic MR findings of myoma were well defined nodules (43), peripheral low signal intensity rim on T1WI (13) and T2WI (9), and peripheral high signal intensity rim on T2WI (5). Among 14 adenomyosises, 9 were correctly diagnosed by sonography. The characteristic US findings of adenomyosis were diffuse uterine hypertrophy more than 5.5cm in AP diameter with endometrial displacement and no significant echo change in myometrium All 14 adenomyosis as were correctly diagnosed from MRI. On T2WI, adenomyosis appeared as ill defined localized or diffuse thickening of the junctional zone more than 1cm in thickness. It was our conclusion that to differentiate between leiomyoma and adenomyosis focused on should be the detection of existence of nodule in leiomyoma, the primary sign, not on the secondary indirect sign.
Adenomyosis* ; Animals ; Female ; Humans ; Hypertrophy ; Leiomyoma* ; Magnetic Resonance Imaging ; Mice ; Myoma ; Myometrium ; Pregnancy ; Prospective Studies ; Uterus

PURPOSE: To analyze clinical, radiological results and survival rates of Press Fit Condylar total knee arthroplasty and compare the results of cruciate-retaining versus cruciate-substitution, and cement versus cementless fixation. MATERIALS AND METHODS: We analyzed 364 patients, 520 knees, which had undergone PFC total knee arthroplasty during the period January 1988 to January 1999. Average follow-up period was 7.1 years (3-14 years). Cases were divided into 2 categories: cruciate-retaining (CR) versus substitution (CS) and cement versus cementless fixation. The clinical results were evaluated using the Hospital for Special Surgery knee scoring system and radiological results were obtained by measuring tibiofemoral angle using Bauer's method. Survivorship analysis was performed using Kaplan-Meier method with revision for any reason as the end point. RESULTS: Clinical, radiological results and the survival rate in the cruciate substitution group were slightly better than those of the cruciate retaining group but no statistical difference was found. Survival rate in the cemented group was significantly higher than that in the cementless group. Clinical and radiological results of the cemented group were better but there was no statistical significance between the two groups. CONCLUSION: No differences were found in the postoperative results of the CR and CS groups. Survival rate in the cemented group was superior to that of the cementless group, which was used even in good bone stock and less deformed cases. This results may be related to a design problem of the cementless prosthesis.
Arthroplasty* ; Follow-Up Studies ; Humans ; Knee* ; Prostheses and Implants ; Survival Rate

Background: Melatonin receptors are present in the human skin and retina. These receptors can be stimulated by light emitting diodes (LEDs) at specific wavelengths, thereby inducing cutaneous photorejuvenation. However, the underlying mechanism remains unclear. Objective: To evaluate the influence of LEDs at specific wavelengths on melatonin membrane receptor (MT1) and cutaneous photorejuvenation via the MT1 pathway in vitro. Methods: Normal human dermal fibroblasts (HDFs) were irradiated using LEDs at different wavelengths (410~940 nm) at a dose of 1 J/cm 2 . MT1 activity was evaluated after melatonin stimulation and LED irradiation. Thereafter, the expressions of collagen (COL) and matrix metalloproteinases (MMPs), with and without luzindole (MT1/2 receptor antagonist), were investigated via semi-quantitative reverse transcription polymerase chain reaction (PCR), real-time PCR, western blotting, and enzyme-linked immunosorbent assay. Results: In HDFs, the MT1 mRNA and protein levels increased significantly in response to melatonin (dose, 50 nM) (p<0.01) and LED irradiation at 595, 630, 850, and 940 nm (p<0.01). LED irradiation up-regulated COL type I and down-regulated MMP-1. Compared to LED irradiation without luzindole, LED irradiation with luzindole produced no significant increase in COL type I mRNA and protein levels (p<0.01). Conclusion We found that LED irradiation induces collagen synthesis and MMP-1 inhibition in HDFs via MT1 activation. Additionally, multiple LED wavelengths (595, 630, 850, and 940 nm) stimulated MT1 in HDFs, unlike in the eyes, where only blue light induced plasma melatonin suppression. This suggests the possibility of the melatoninergic pathway in photorejuvenation.

Multilobular tumor of bone detected in a 2.5-year-old male Pekingese dog is reported. Grossly, the neoplasm consisted of multiple, variably sized, gritty, grayish-white to yellow nodules separated by thick collagenous septa. Histologically, these nodules contained multiple lobules of irregularly shaped and sized islands of well-differentiated osteoid and cartilage, separated by anastomosing fibrovascular septa. Chondrocytes and osteocytes were observed in the lacunae and in more osseous islands in the lobule, respectively. These lobules were surrounded by mesenchymal spindle cells. Mitotic figures were not evident. The neoplastic pattern was consistent with that of a multilobular bone tumor. Diagnosis was based on gross and light microscopic findings. The cause of this neoplasm was not determined.
Animals ; Bone Neoplasms/pathology/surgery/*veterinary ; Dog Diseases/*pathology/surgery ; Dogs ; Histocytochemistry/veterinary ; Male ; Mandible/*pathology/surgery ; Osteosarcoma/pathology/surgery/*veterinary

The authors report 2 cases of nerve root herniation after discectomy of a large lumbar disc herniation caused by an unrecognized dural tear. Patients complained of the abrupt onset of radiating pain after lumbar discectomy. Magnetic resonance imaging showed cerebrospinal fluid signal in the disc space and nerve root displacement into the disc space. Symptoms improved after the herniated nerve root was repositioned. Clinical symptoms and suggestive radiologic image findings are important for early diagnosis and treatment.
Diskectomy ; Displacement (Psychology) ; Early Diagnosis ; Humans ; Magnetic Resonance Imaging

The position of interventricular septum, which was measured by transitional zone of EKG, was compared with that measured by 2-D echocardiography in 51 patient. 1) The position of interventricular septum measured by 2-D echocardiography was very similar to that measured by transitional zone of EKG. 2) Extensive AMI (Anterior Myocardial Infarction) and LBBB showed moderate differences between two method. 3) RBBB and replaced mitral valve state showed severe differences between two methods. Transitional zone of EKG was helpful to define the position of interventricular septum except extensive AMI, bundle branch block and replaced mitral valve state.
Bundle-Branch Block ; Echocardiography ; Electrocardiography* ; Humans ; Mitral Valve

OBJECTIVE: To compare radiographic analysis on the sagittal lumbar curve when standing, sitting on a chair, and sitting on the floor. METHODS: Thirty asymptomatic volunteers without a history of spinal pathology were recruited. The study population comprised 11 women and 19 men with a mean age of 29.8 years. An independent observer assessed whole lumbar lordosis (WL) and segmental lordosis (SL) between L1 and S1 using the Cobb's angle on lateral radiographs of the lumbar spine obtained from normal individuals when standing, sitting on a chair, and sitting on the floor. WL and SL at each segment were compared for each position. RESULTS: WL when sitting on the floor was reduced by 72.9% than the average of that in the standing position. Of the total decrease in WL, 78% occurred between L4 to S1. There were significant decreases in SL at all lumbar spinal levels, except L1-2, when sitting on the floor as compared to when standing and sitting on a chair. Changes in WL between the positions when sitting on a chair and when sitting on the floor were mostly contributed by the loss of SL at the L4-5 and L5-S1 levels. CONCLUSION: When sitting on the floor, WL is relatively low; this is mostly because of decreasing lordosis at the L4-5 and L5-S1 levels. In the case of lower lumbar fusion, hyperflexion is expected at the adjacent segment when sitting on the floor. To avoid this, sitting with a lordotic lumbar curve is important. Surgeons should remember to create sufficient lordosis when performing lower lumbar fusion surgery in patients with an oriental life style.
Animals ; Female ; Floors and Floorcoverings ; Humans ; Life Style ; Lordosis ; Male ; Spine