ABSTRACT
Transitional cell carcinoma is the most common malignant tumor of the urteter, usually presenting as focal ureteral wall thickening or a mass filling the ureter lumen and combined with periureteral infiltration or adjacent lymph node enlargement. Retroperitoneal mass due to exophytic growth of ureteral transitional cell carcinoma has not been described in the literature, and we now report the CT findings in such a case.
Subject(s)
Carcinoma, Transitional Cell , Lymph Nodes , UreterABSTRACT
Primary lymphoma of the uterus is a rare disease, the reported characteristic MR imaging findings being homogeneous intermediate signal intensity of the indistinct mass on T1- and T2-weighted images, and the preservation of endome-trial lining and uterine architecture. We report a case of primary uterine lymphoma which showed tumoral necrosis, endometrial disruption and diffuse anterior vagi-nal wall involvement.
Subject(s)
Female , Humans , Precursor Cell Lymphoblastic Leukemia-Lymphoma/diagnosis , Magnetic Resonance Imaging , Middle Aged , Necrosis , Uterine Neoplasms/diagnosis , Uterus/pathologyABSTRACT
PURPOSE: To determine optimal window settings for measuring the inner diameter of the trachea and both mainbronchi by spiral CT. MATERIALS AND METHODS: Chest PA radiography and spiral CT scanning were performed in ten healthy adult volunteers. Three dimensional images were reconstructed (minimal threshold value : -1000HU ; maximal threshold value : from -200 to -900HU, of 50HU intervals) to measure the inner diameter of the trachea and both main bronchi. The results of 3D spiral CT were compared with those of chest radiography. RESULTS: The inner diameters of the trachea, right main bronchus, left main bronchus-I (1cm below the tracheal carina) and left mainbronchus-II (2cm below the tracheal carina) measured by chest radiograph and 3D spiral CT were not significantly different at maximal threshold values of -400 ~ -550HU, -450 ~ -550HU, -450 ~ -600HU and -500 ~ -600HU, respectively (p>0.05). The differences in the results of the two series were statistically significant at other threshold values however (p<0.05). CONCLUSION: We determined optimal window settings for measuring the inner diameter of the trachea and both main bronchi by spiral CT. The optimal maximal threshold values were somewhat different according to measured sites of the trachea and both main bronchi.
Subject(s)
Adult , Humans , Bronchi , Radiography , Radiography, Thoracic , Thorax , Tomography, Spiral Computed , Trachea , VolunteersABSTRACT
No abstract available.