ABSTRACT
PURPOSE: The purpose of this study was to investigate the frequency, site and characteristics of motion artifact of ascending aorta mimicking dissection. MATERIALS AND METHODS: The authors evaluated postcontrast CT scans of 60 cases in 60 patients without symptoms of aortic dissection or aortic disease. A Toshiba 900S scanner was used, with 1 cm slice thickness and 1 sec scan time. Streak artifacts, and those relating to extra-aortic vascular structure or pericardial effusion were excluded from this study. RESULTS: Crescent-shaped motion artifacts were seen in 54 cases (90%), and occurred from 1 cm to 4 cm above the level of the aortic valve; between men and women, there was no significant difference in frequency. In each case, the artifact was seen at 1 to 5 (mean 2.9) levels. Its pattern was symmetric in 31 of 60 cases (51%), and at 15 other sites, symmetric artifacts were seen between the SVC and ascending aorta. At the margin of the aortic circumference, the direction of the artifact was left anterior-right posterior in 23.9% of cases, and anterior median-posterior median in 20.8%. CONCLUSION: On CT, motion artifact of ascending aorta occurs frequently. Findings relating to location, symmetric pattern and characteristic direction of artifact may be helpful in the differential diagnosis of aortic dissection and aortic motion artifact.
Subject(s)
Female , Humans , Male , Aorta , Aortic Diseases , Aortic Valve , Artifacts , Diagnosis, Differential , Pericardial Effusion , Tomography, X-Ray ComputedABSTRACT
Extraskeletal Ewing's sarcoma is a very rare tumor which was first reported by Angervall and Enzinger in 1975. The common sites of extraskeletal Ewing s sarcoma are bony structures of lower extremities, paravertebral region, and pelvis, but rarely chest walL Microscopically, extraskeletal Ewing's sarcoma is indistinguishable from the Ewing's sarcoma of bone. We present here a case of extraskeletal Ewing's sarcoma of the left lateral chest wall in a 19-year-old male. Wide extirpation and postoperative combined chemotherapy were done, and we discuss the clinical picture, histopathology, therapeutic management, and prognosis with review of the literature.
Subject(s)
Humans , Male , Young Adult , Drug Therapy , Lower Extremity , Pelvis , Prognosis , Sarcoma , Sarcoma, Ewing , Thoracic Wall , ThoraxABSTRACT
Endometrial carcinoma usually occurs in postmenopausal women ; less than 5% occurs in women under the age of40. Up to one quarter of endometrial carcinoma patients below this age have PCO(polycystic ovary disease, Stein-Leventhal syndrome). The increased incidence of endometrial carcinoma in patients with PCO is related to chronic estrogenic stimulation. We report MR imaging in one case of endometrial carcinoma occuring in a 23 yearold woman with PCO and had complained of hypermenorrhea for about three years. On T2-weighted MR image the endometrial cavity was seen to be distended with protruded endometrial masses of intermediate signal intensity, and the junctional zone was disrupted beneath the masses. Both ovaries were best seen on T2-weighted MR imagingand showed multiple small peripheral cysts and low signal-intensity central stroma.
Subject(s)
Female , Humans , Endometrial Neoplasms , Estrogens , Incidence , Magnetic Resonance Imaging , Menorrhagia , OvaryABSTRACT
Chronic eosinophilic pneumonia is a very rare disorder of unknown etiology characterized by striking systemic and pulmonary manifestations such as fever, weight loss, dyspnea, blood eosinophilia, and fluffy peripheral opacities on chest radiograph. A number of these patients developed asthma before or with the onset of illness. The roentgenographic lesion rapidly resoluted with corticosteroid and recurrence was occasionally occured in the same location. Histopathologic features of chronic eosinophilic pneumonia include dense aggregates of eosinophils, histiocytes, and multinucleated giant cells within alveolar spaces, interstitium, and bronchioles associated with scattered lymphocytes and plasma cells. We report a case of chronic eosinophilic pneumonia diagnosed by clinical, radiographic, and histologic findings with review of the literature.
Subject(s)
Humans , Asthma , Bronchioles , Dyspnea , Eosinophilia , Eosinophils , Fever , Giant Cells , Histiocytes , Lymphocytes , Plasma Cells , Pneumonia , Pulmonary Eosinophilia , Radiography, Thoracic , Recurrence , Strikes, Employee , Weight LossABSTRACT
PURPOSE: The purpose of this study is to determine characteristic CT findings in renal abscess. MATERIAL AND METHODS: Twenty cases of renal abscess were retrospectively analyzed for CT findings relating to the shape andextent of the abscess, change of nephrogram, peripheral rim enhancment, wedge-shaped enhancement on delayed scans, enlargement of the kidney involved and associated findings. RESULTS: Seven patients had a renal abscess at the right kidney, nine at the left kidney and two bilaterally. The abscesses were round in 18 cases and finger-like in two. Rim enhancement around renal abscess was seen in four cases(20%). Changes in the nephrogram around the abscess were seen in 12 cases(60%). In all six patients who had undergone delayed postcontrast scans, wedge-shaped enhancement was shown around the abscess(100%). In the observation of the extent of renal abscesses, 14 cases were within the kidney, six cases extended the beyond renal capsule, and two were loculated in the renal fascia itself. Renal enlargement was seen in nine cases(45%). CONCLUSION: These results suggest that CT findings such as delayed wedge-shaped enhancement, change of nephrogram, peripheral rim enhancement, renal enlargement, and associated findings are valuable for diagnosis, and that CT also gives information concerning the extent, evolution and complication of a renal abscess.
Subject(s)
Humans , Abscess , Diagnosis , Fascia , Kidney , Retrospective StudiesABSTRACT
The obstruction of inferior vena cava(IVC) is uncommon condition. The classification is based on the obstructive sites of major anatomic segments of IVC. The main collateral pathways of interruption of IVC were central channels through ascending lumbar veins, intervertebral veins and azygos-hemiazygos complex. However, the complete obstruction of mid-portion of IVC, accompanying collateral cirulation with pericardiacophrenic vein was rarely reported. We had experienced a case of complete obstruction of mid-portion of IVC with lobulated left cardiac border, which was unforgettable characteristic finding on chest radiograph. It was confirmed by venographic examination that the lobulated left cardiac shadow was a collateral circulation of pericardiacophrenic vein.
Subject(s)
Classification , Collateral Circulation , Radiography, Thoracic , Veins , Vena Cava, InferiorABSTRACT
PURPOSE: Ultrasound(US) findings of hyperechoic renal medulla in gouty nephropathy were compared with clinical features such as serum uric acid level to evaluate its usefulness in determination of the treatment and prognosis. MATERIALS AND METHODS: A retrospective review of US of 36 cases of gouty arthritis was classified into four groups according to the medullary echogenicity (O:normal, grade 1 :renal medulla as isoechoic as renal cortex, grade 2'heterogeneous increased echogenicity of renal medulla than that of renal cortex, grade 3 :the echogenicity of all renal medulla higher than that of renal cortex with renal contour deformity) which were compared with the serum urate level and associated conditions. Nephrocalcinosis and nephrolithiasis were analyzed through the KUB and the RGP. RESULTS: The degree of hyperechoic renal medulla was related to the level of serum uric acid, and in group IV, six cases of obstructive uropathy (nephrocalcinosis and nephrolithiasis) showed deformed renal contour. Associated conditions such as hypertension, alcoholism, diabetes mellitus and drug abuse were distributed in relation to the degree of hyperechoic renal medullas. CONCLUSION: US findings of hyperechoic renal medulla was related with uric acid level in gouty nephropathy and thus could be valuable for treatment decision and prediction of prognosis.
Subject(s)
Alcoholism , Arthritis, Gouty , Diabetes Mellitus , Hypertension , Nephrocalcinosis , Nephrolithiasis , Prognosis , Retrospective Studies , Substance-Related Disorders , Ultrasonography , Uric AcidABSTRACT
Gold therapy of rheumatoid arthritis is effective, but adverse reactions are also common. There are some cutaneous, hematologic, renal, and pulmonary side effects which have been associated with immunologic abnormalities. Also, hypersensitivity pneumonitis induced by gold therapy was rarely reported in literature. But, the mechanism for the induction of the pulmonary disease is not blown. We report a case of seropositive rheumatoid arthritis presented as gold induced hypersensitivity pneumonitis which was confirmed by the peripheral blood lymphocyte stimulation test with gold.
Subject(s)
Alveolitis, Extrinsic Allergic , Arthritis, Rheumatoid , Hypersensitivity , Lung Diseases , Lymphocyte Activation , LymphocytesABSTRACT
Angiosarcoma is a very rare malignant tumor of endothelial cell origin. We experienced a case of angiosarcoma presented with massive pleural effusion, which was considered as a metastasis from right kidney. A 44-year-old male patient was admitted due to dyspnea for one month. He had a history of transient hematuria 3 months before admission, which disappeared spontaneously Chest roentgenography showed total haziness in left hemithorax with multiple nodular shadows in right lung. Abdominal ultrasonogram showed a single heterogeneous hyperechoic mass, measuring about 7.3×7.1×6.5cm in size in the upper and mid-pole of the right kidney, involving. renal sinus. Computed tomography of the chest revealed highly enhanced multiple pulmonary and subpleural nodules with loculated pleurisy. In bronchoscopic finding, a fungating, hypervascular tumor mass was noticed at the orifice of anterior basal segment of left lower lung after removal of tenaceous mucus Pleural and bronchoscopic biopsies showed findings of angiosarcoma confirmed by immunochemical stains with factor VIII related antigen(+), laminin(+) and vimentin(+), and by characteristic electronmicroscopic findings. Massive pleural effusion was controlled with several times of pleurodesis in both pleural spaces.
Subject(s)
Adult , Humans , Male , Biopsy , Coloring Agents , Dyspnea , Endothelial Cells , Factor VIII , Hemangiosarcoma , Hematuria , Kidney , Lung , Mucus , Neoplasm Metastasis , Pleural Effusion , Pleurisy , Pleurodesis , Radiography , Thorax , UltrasonographyABSTRACT
No abstract available.