The lacrimal fossa can be invovled by a wide specturm of orbital pathology. The correct diagnosis is importantto avoid unnecessary procedure and to do appropriate management. 14 patients with mass lesions in the lacrimalfossa were evaluated with CT and clinical findings. The results were as follows: 1. Final diagnosis of 14 caseswith lacrimal fossa tumors was pleomorphic adenoma in 3 cases, adenoid cystic carcinoma in 1 case, pseudotumor incases, lymphoma in 2 cases, neurofibroma in 1 case, chloroma in 1 case and metastatic adenocarcinoma in 1 case. 2.The duration of symptoms of pleumorphic adenoma was more than 1 year and characteristic CT findings were globularmasses with pressure erosion of the adjacent bone. Patient wih adenoid cystic carcinoma had a short history ofsymptoms. CT showed a fusiform mass but intracranial extension with frank destruction of sphenoid bone. 3.Patients wtih pseudotumor and lymphoma had symptoms for less than 1 year. The CT findings were ill-definedinfiltrative patterns with scleral thickening and the differential diagnosis of them was difficult. 4. The marginsof neurofibroma and chloroma were well defined while that of the metastatic adenocarcinoma was ill-defined. 5. Thedegree and the extent of the contrast enhancement gave no benefit in the differential diagnosis of each diseaseentities and even of the benign and malignant lesions.
Adenocarcinoma ; Adenoma ; Adenoma, Pleomorphic ; Carcinoma, Adenoid Cystic ; Diagnosis ; Diagnosis, Differential ; Humans ; Lymphoma ; Neurofibroma ; Orbit ; Pathology ; Sarcoma, Myeloid ; Sphenoid Bone ; Unnecessary Procedures

No abstract available.
Osteosarcoma* ; Spine*

No abstract available.
Arthrography*

No abstract available.
Leiomyosarcoma*

No abstract available.
Coronary Vessels*

No abstract available.
Neurilemmoma*

PURPOSE: Intrinsic antioxidant enzymes(AOE) are essential for protection against potential cellular damage by reactive oxygen species(ROS), which affect many biological processes including carcinogenesis. The aim of the present study was to characterize the expression of antioxidant enzymes in human bladder cancer tissue and to evaluate the relationship with histopathological characteristics. MATERIALS AND METHODS: Immunohistochemical stainingfor catalase, superoxide dismutase(SOD), and glutathione peroxidase(GPx) was performed on formalin-fixed, paraffin-embedded tissues obtained from 75 bladder cancersand 30 normal bladders. The degree of AOE expression was compared with cancer invasiveness or the cell grade. RESULTS: The expression of catalase and SOD were significantly lower in cancer tissue than in normal bladder tissue(44% vs 73.3%, p=0.012; 49.3% vs 80%, p=0.007, respectively) but GPx expression was not significantly different(45.3% vs 63.3%, p=0.146). Catalase and SOD expression were significantly lower in invasive transitional cell carcinomas than in superficial transitional cell carcinomas(32.4% vs 53.7%, p=0.034; 32.4% vs 63.4%, p=0.014, respectively), but again GPx expression was not significantly different(38.2% vs 51.2%, p=0.26). Moreover, no significant difference was observed between the expression of all three enzymes and the cancer cell grade. CONCLUSIONS: Down-regulation of the antioxidant enzyme system, as indicated by the expression of catalase and SOD, appears to be related with carcinogenesis and progression in bladder cancer.
Antioxidants ; Biological Processes ; Carcinogenesis ; Carcinoma, Transitional Cell ; Catalase ; Down-Regulation ; Glutathione* ; Humans* ; Immunohistochemistry ; Oxygen ; Superoxide Dismutase* ; Superoxides* ; Urinary Bladder Neoplasms* ; Urinary Bladder*

A retroperitoneal lymphangioma is a rare tumor, most commonly affecting the neck or axillary area. We report a case of a 60-year-old man, with left flank pain, who had a retroperitoneal cavernous lymphangioma, with hemorrhagic complication. The diagnosis was made after complete excision of the tumor, followed by pathologic documentation.
Diagnosis ; Flank Pain ; Humans ; Lymphangioma* ; Middle Aged ; Neck ; Retroperitoneal Space*

STUDY DESIGN: This is a retrospective and preliminary study. OBJECTIVES: We wanted to evaluate the characteristics of recompression of vertebral bodies without trauma after balloon kyphoplasty (KP) for treating osteoporotic vertebral compression fractures (VCF). SUMMARY OF THE LITERATURE REVIEW: KP has been used for fracture reduction, maintenance of vertebral height and relief of pain in VCF. Despite of numerous satisfactory results, several factors have been noted to affect the clinical results of KP. MATERIALS AND METHODS: Six patients with recompression of vertebral bodies without trauma after KP were reviewed. All the patients were female and their mean age was 75.9+/-4.1 years old. The follow-up period was 17.2+/-8.5 months. The compression rates of the operated vertebral bodies (CR) and the kyphotic angles (KA) were checked by using plain roentgenograms at the initial, postoperative and last follow-up periods. The preoperative MRIs were also reviewed. The clinical results were checked using the VAS. RESULTS: The CRs at the initial, postoperative and last follow-up periods were 33.7+/-14.8%, 13.4+/-7.6% and, 26.9+/- 9.9%, respectively. The KAs were 19.2+/-7.2degrees , 14.8+/-6.2degrees and 20.5+/-7.4degrees for each period, respectively. Statistically, the CR and KA at the initial-postoperative period and at the postoperative-last follow-up period showed significant differences (p < 0.05). Intervertebral clefts were found in all the cases on MRI. Normal bones superior or inferior to cement were also seen in all the cases after KP. The VAS scores were 8.5+/-0.5, 2.3+/-0.5 and 3.0+/-0.6, retrospectively, and there were significant differences between each periods (p<0.05). CONCLUSIONS: Recompression of a vertebral body without trauma after KP for treating VCF was observed in the cases with a intervertebral cleft seen on MRI and normal bones superior or inferior to the cement were observed after KP. The causes of recompression may be subsequent compression or resorption of the remaining vertebral body.
Female ; Follow-Up Studies ; Fractures, Compression ; Humans ; Kyphoplasty ; Retrospective Studies

PURPOSE: When performing partial nephrectomy, there is a risk of excessive blood loss; this necessitates transfusion and it also results in deterioration of the renal function when a vascular clamp is used. We evaluated the usefulness of the microwave tissue coagulator for performing partial nephrectomy for renal cell carcinoma and benign renal tumors. MATERIALS AND METHODS: From October 2000 to January 2005, partial nephrectomy was performed without renal pedicle clamping with using the microwave tissue coagulator for 9 patients with seven renal cell carcinomas and two angiomyolipomas. RESULTS: In 6 patients, partial nephrectomy was successful with using the microwave tissue coagulator without renal pedicle clamping. The mean operative time and blood loss were 184 minutes and 223ml, respectively. For the remaining cases, three had positive tumor margins, so radical nephrectomy was performed for those cases. The mean creatinine level was not increased postoperatively. The mean preoperative and postoperative hemoglobin levels were 12.6g/dl and 11.7g/dl, respectively. CONCLUSIONS: Partial nephrectomy with using the microwave tissue coagulator can be safe and successful without performing renal pedicle clamping. However, the insertion line of the microwave electrode must be carefully determined for the resection to be curative, the same as when making the cut line for conventional partial nephrectomy.
Angiomyolipoma ; Carcinoma, Renal Cell ; Constriction ; Creatinine ; Electrodes ; Humans ; Kidney ; Microwaves* ; Nephrectomy* ; Operative Time