No abstract available.
Hand*

No abstract available.
Arthroplasty, Replacement, Hip* ; Femoral Fractures*

No abstract available.

PURPOSE: The measurement of radiation absorbed dose is useful to predict the response after I-131 labeled metaiodobenzylguanidine (MIBG) therapy and determine therapy dose in patients with unresectable or malignant pheochromocytoma. We estimated the absorbed dose in tumor tissue after high dose I-131 MIBG in a patient with pheochromocytoma using a gamma camera and Medical Internal Radiation Dose (MIRD) formula. MATERIALS AND METHODS: A 64-year old female patient with pheochromocytoma who had multiple metastases of mediastinum, right kidney and periaortic lymph nodes, received 74 GBq (200 mCi) of I-131 MIBG. We obtained anterior and posterior images at 0.5, 16, 24, 64 and 145 hours after treatment. Two standard sources of 37 and 74 MBq of I-131 were imaged simultaneously. Cummulated I-131 MIBG uptake in tumor tissue was calculated after the correction of background activity, attenuation, system sensitivity and count loss at a high count rate. RESULTS: The calculated absorbed radiation dose was 32-63 Gy/ 74 GBq, which was lower than the known dose for tumor remission (150-200 Gy). Follow-up studies at 1 month showed minimally reduced tumor size on computed tomography, and mildly reduced I-131 MIBG uptake. CONCLUSION: We estimated radiation absorbed dose after therapeutic I-131 MIBG using a gamma camera and MIRD formula, which can be peformed in a clinical nuclear medicine laboratory. Our RESULTS suggest that the measurement of radiation absorbed dose in I-131 MIBG therapy is feasible as a routine clinical practice that can guide further treatment plan. The accuracy of dose measurement and correlation with clinical outcome should be evaluated further.
3-Iodobenzylguanidine ; Female ; Follow-Up Studies ; Gamma Cameras ; Humans ; Kidney ; Lymph Nodes ; Mediastinum ; Middle Aged ; Neoplasm Metastasis ; Nuclear Medicine ; Pheochromocytoma

PURPOSE: The purpose of this study was to evaluate the diagnostic accuracy of [18F]FDG PET in the diagnosis of recurrent head and neck cancer after the completion of surgery and radiotherapy in patients with head and neck cancers. MATERIALS AND METHODS: In fifty-nine patients with head and neck cancers, whole body [18F]FDG PET studies were performed. According to the different therapeutic modalities, patients were divided into four groups (Group I; pre-treatment, Group II; surgery, Group III; radiotherapy, Group IV; both surgery and radiotherapy). [18F]FDG PET images were compared with clinical, CT and histopathologic findings. RESULTS: For detection of metastatic lymph nodes in 14 patients of pre-treatment group (group I), the sensitivity and specificity of PET were 100% (10/10) and 75% (3/4), and those of CT were 80% (8/10) and 100% (4/4). For detection of recurrence in 45 patients of post-treatment group, overall sensitivity and specificity of PET were 96.2% (25/26) and 78.9% (15/19) [(100% and 75% in group II, 80% and 50% in group III, and 100% and 100% in group IV)] without significant difference from pre-treatment group (p>0.1). In detecting recurrence, the sensitivity and specificity of [18F]FDG PET were 90.9% (10/11) and 20% (1/5) in 16 patients who underwent [18F]FDG PET within 2 months after the completion of treatment. The specificity of these patients was significantly lower than that of 29 patients (100% of sensitivity and specificity) who underwent [18F]FDG PET 2 months after treatment (p<0.05). CONCLUSION: [18F]FDG PET is an accurate diagnostic modality for the detection of recurrence in head and neck cancer. Post-therapy [18F]FDG PET should be obtained at least 2 months after the completion of surgery or radiotherapy.
Diagnosis ; Head and Neck Neoplasms ; Head* ; Humans ; Lymph Nodes ; Neck* ; Radiotherapy* ; Recurrence ; Sensitivity and Specificity

PURPOSE: It is important to differentiate malignant from benign lesions of intraocular masses in choosing therapeutic plan. Biopsy of intraocular tumor is not recommended due to the risk of visual damage. We evaluated the usefulness of F-18-FDG PET imaging in diagnosing intraocular neoplasms. MATERIALS AND METHODS: F-l8-FDG PET scan was performed in 13 patients (15 lesions) suspected to have malignant intraocular tumors. There were 3 benign lesions (retinal detachment, choroidal effusion and hemorrhage) and 10 patients with 12 malignant lesions (3 melanomas, 7 retinoblastomas and 2 metastatic cancers). Regional eye images (256*256 and 128*128 matrices) were obtained with or without attenuation correction. Whole body scan was also performed in eight patients (3 benign and 6 malignant lesions). RESULTS: All malignant lesions were visualized while all benign lesions were not visualized. The mean peak standardized uptake value (SUV) of malignant lesions was 2.64+/-0.57 g/ml. There was no correlations between peak SUV and tumor volume. Two large malignant lesions (>1000 mm3 ) showed hot uptake on whole body scan. But two medium-sized lesions (100-l000 mm3) looked faint and two small (<100 mm3) lesions were not visualized. The images reconstructed with 256*256 matrix showed lesions more clearly than those with 128X128 matrix. CONCLUSION: F-18-FDG PET scan is highly sensitivity in detecting malignant intraocular tumor. For the evaluation of small-sized intraocular lesions, whole body scan is not appropriate because of low sensitivity. A regional scan with sufficient acquisition time is recommended for that purpose. Image reconstruction in matrix size of 256*256 produced clearer images than the ones in 128X128, but it does not affect the diagnostic sensitivity.
Biopsy ; Choroid ; Diagnosis* ; Humans ; Image Processing, Computer-Assisted ; Melanoma ; Orbital Neoplasms ; Positron-Emission Tomography ; Retinoblastoma ; Tumor Burden ; Whole Body Imaging

Metastatic foci to the breast resulting from extramammary malignant neoplasm are rare and multiple myeloma involved the breast are extremely rare. A 53 year old woman with a history of multiple myeloma, diagnosed 4 years previously, was admitted with a lump in her right breast. A multiple course of chemotherapy was administered. Examination revealed a palpable mass in the upper outer quadrant of the right breast. The firm and mobile mass measured 3X2 cm. There was no palpable axillary lymphadenopathy. Two echo-poor solid masses were present on breast ultrasound and there was evidence of neovascularization on color Doppler. A mammogram revealed a circumscribed spheroid shadow without evidence of microcalcification, spiculation or any other signs of desmoplastic response. A core biopsy revealed immature plasma cell infiltration showing kappa light chain restriction, consistent with multiple myeloma involving the breast. Another case of breast metastasis of multiple myeloma origin is described and a review of the literature is discussed.
Biopsy ; Breast* ; Drug Therapy ; Female ; Humans ; Lymphatic Diseases ; Middle Aged ; Multiple Myeloma* ; Neoplasm Metastasis ; Plasma Cells ; Ultrasonography

OBJECTIVES: The prevalence of malaria is increasing in recent years and also multidrug resistant malaria is increasing around the world and there is an increasing concern about imported malaria in nonendemic areas. Now many drugs are tried to find out effect on multidrug resistant malaria. We performed this study to investigate the thrapeutic effect of halofantrine in the treatment of chloroquine resistant imported malaria. METHODS: From Feb. 1992 to May 1995, we experienced 35 patients infected with malaria and treated 14 patients among 35 patients with halofantrine. RESULTS: 1) All 14 patients were sailor with a mean age of 39.4 years and infected with malaria. 2) The majority of patients were infected with malaria at Africa. 3) 10 patients were infected with Plasmodium falciparum and the remainder were undetermined. 4) In the 11 cases of chloroquine resistant malaria treated with quinine plus tetracycline combination therapy or Fansidar, 4 cases could not be tolerable due to side effects and resistance to the therapy, we substituted halofantrine for above regimens. 5) In the 10 cases, treated after May 1994, halofantrine was the first choice of treatment because they were the cases of malaria infected in the mid-Africa where the prevalence of chloroquine resistant malaria is high. 6) With halofantrine, all 14 cases were treated with minimal side effects suc4 as nausea, vomiting, anorexia, abdominal pain and fatigue. CONCLUSION: We think halofantrine is a simple and effective regimen against chloroquine resistant malaria and consider this agent as an alternative therapeutic regimen on chloroquine resistant malaria.
Abdominal Pain ; Africa ; Anorexia ; Chloroquine* ; Fatigue ; Humans ; Malaria* ; Military Personnel ; Nausea ; Plasmodium falciparum ; Prevalence ; Quinine ; Tetracycline ; Vomiting

Malignant fibrous histiocytoma is a pleomorphic sarcoma in adults, which occurs principally as a mass on an extremity or in the abdominal cavity or retroperitoneum. It typically involved deep fascia or skeletal muscle and only rarely was confined to the subcutis without fascial involvement. Malignant fibrous histiocytomas developed in the intraabdominal organs are very rare and only few cases have been reported until now. Here, we report a case of malignant fibrous histiocytomar developed in the stomach of a 46-year old male who showed clinical and histologic features of malignant fibrous histiocytoma without any identified etiologic factors. The patient was treated successfully with surgery, and has had no recurrence since, during the ensuring one and a half yars.
Abdominal Cavity ; Adult ; Extremities ; Fascia ; Histiocytoma, Malignant Fibrous* ; Humans ; Male ; Middle Aged ; Muscle, Skeletal ; Recurrence ; Sarcoma ; Stomach*

STATEMETN OF PROBLEM: In-Ceram system is one of the all-ceramic crowns that can be used in anterior 3 unit fixed partial dentures and posterior single crowns. The alumina core used in In-Ceram system is manufactured using slip-casting technique. The slip-casting technique is difficult and technique sensitive. To improve this problem, tape-casting method was introduced into dentistry. There were no studies to examine the effect of margin design on the margin fit-ness of all-ceramic crowns fabricated from alumina tape. PURPOSE: The purpose of this study was to compare the marginal fitness of glass infiltrated alu-mina core fabricated from aqueous-based alumina tape according to different margin types (90 .,110 ., 135 .shoulder margin). MATERIAL AND METHOD: Three upper central resin incisors were prepared with 90 ., 110 .and 135 .shoulder margins for all-ceramic crowns, respectively. The resin teeth were duplicated and master die and special plaster die were made as usual. After alumina cores were fabri-cated from aqueous-based alumina tape, cores were cemented to each 15 epoxy dies replicated from three resin teeth with resin cement. These cemented cores were embedded in epoxy resin. Specimens were cut mesiodistally and buccolingually. Marginal gap and discrepancy were measured under microscope. RESULTS: The marginal gap and discrepancy of 90.marginal angle was 75.1 mu m, 86.6 mu m, 110 .marginal angle was 41.5 mu m, 50.7 mu m and 135 .marginal angle was 51.7 mu m, 54.2 mu m, respectively. The smallest value was seen in 110 (angle, which was statistically significant com-pared to that of 90 .angle (p<0.05). CONCLUSION: Marginal fitness of alumina cores made of alumina tape with 110 .shoulder mar-gin was best and others were clinically acceptable.
Aluminum Oxide* ; Crowns ; Dentistry ; Denture, Partial, Fixed ; Glass* ; Incisor ; Resin Cements ; Shoulder ; Tooth