ABSTRACT
PURPOSE: To assess the usefulness of cardiac MR imaging (MRI) in the diagnosis of acute myocardial infarction and in the assessment of myocardial viability in comparision with Tl-201 SPECT. MATERIALS AND METHODS: We retrospectively studied 17 patients who complained of chest pain and dyspnea with cardiac MRI . The patients were evaluated for the presence or absence of high signal intensity on T2-weighted image (T2WI), abnormal wall motion on 2D - FIESTA, perfusion defect on Gd-DTPA enhanced T1WI, and delayed myocardial enhancement on 15-minutes delay Gd-DTPA enhanced T1WI. The results were correlated with the images on Tl-201 SPECT, taken at rest and stress, through which reversibility of perfusion defect was assessed. RESULTS: Both cardiac MRI and Tl-201 SPECT proved to be useful methods for diagnosing acute myocardial infarction. In order of decreasing correspondence, T2WI, Tl-201 SPECT, delayed enhancement study, and wall motion images all showed significant statistical correlation with the clinical diagnosis of myocardial infarction. Perfusion MRI, on the other hand, showed no significant statistical difference was found between Tl-201 SPECT and cardiac MRI. The results on T2WI showed high accordance with those on Tl-201 SPECT, while delayed myocardial enhancement and wall motion studies showed no agreement with Tl-201 SPECT. CONCLUSION: Cardiac MRI is useful method for diagnosis of acute myocardiac infarction. With respect to the assessment of myocardial viability, the results obtained on cardiac MRI showed high agreement with those on Tl-201 SPECT. However, further study is necessary at this point for standardization and establishment of the methods for assessing myocardial viability on cardiac MRI.
Subject(s)
Humans , Chest Pain , Diagnosis , Dyspnea , Gadolinium DTPA , Hand , Infarction , Magnetic Resonance Imaging , Myocardial Infarction , Perfusion , Retrospective Studies , Tomography, Emission-Computed, Single-PhotonABSTRACT
The incidence of pulmonary leiomyosarcoma as primary lung tumor is very rare. Most of the primary leiomyosarcomas originate in the hilar region in relation to the main bronchus or pulmonary vessels and only a few originate more peripherally. This rare tumor can mimic bronchial carcinoma and present with local or systemic symptoms, or it may be discovered as an incidental finding on a routine chest X-ray. We report with review of literature, a case of incidental primary pulmonary leiomyosarcoma which originated peripherally. Huge mass was found on the left lung of a 61-year-old man on the chest X-ray peripherally. He underwent the surgical resection of the left pneumonectomy and the postoperative course was uneventful.
Subject(s)
Humans , Middle Aged , Bronchi , Carcinoma, Bronchogenic , Incidence , Incidental Findings , Leiomyosarcoma , Lung , Pneumonectomy , ThoraxABSTRACT
Since sclerosing hemangioma of the lung was first described by Liebow and Hubbell in 1956, there have been several reports on cases occurring as a solitary nodule; however, sclerosing hemangiomas occurring as multiple nodules are extremely rare. The histogenesis of this tumor remains controversial and there are several hypotheses of the etiology. Three separate nodules were found in a 57-year-old housewife, one found in the right middle lobe, one in the apicoposterior segment of the left upper lobe, and one in the superior segment of the left lower lobe. The only symptom or sign presented was a dry cough. Apicoposterior segmentectomy of the left upper lobe and wedge resection of the superior segment of the left lower lobe were performed. The postoperative course was uneventful and the patient was discharged on the postoperative 15th day.
Subject(s)
Humans , Middle Aged , Cough , Hemangioma , Histiocytoma, Benign Fibrous , Lung Neoplasms , Lung , Mastectomy, Segmental , Pulmonary Sclerosing HemangiomaABSTRACT
PURPOSE: The purpose of this study was to evaluate the CT findings of peripheral small cell carninoma of the lung. MATERIALS AND METHODS: Of 45 patients with pathologically proven small cell carcinoma, with a solitary nodule in the peripheral lung distal to the segmental bronchus were included in this study. We retrospectively reviewed clinical data and CT findings including size, location, margin, enhancement pattern, lymph node enlargement, and metastasis. RESULTS: All ten masses examined had a well-defined margin, while a lobulated margin was seen in seven patients. The mean diameter was 3.8cm (2.5 -7 .0 cm), and the enhancement pattern was homogeneous in three cases and inhomogeneous in seven. Calcification or air-bronchogram was not present, and focal air density was seen in one case. In five patients, only lung mass was present, and lung mass with lymph node enlargement was seen in one patient. Distant metastasis without lymph node enlargement was noted in two patients and another two showed lymph node enlargement and distant metastasis. CONCLUSION: In ten of 45 cases of small cell carcinoma (22.2 %), the location of the nodule indicated that peripheral small cell carcinoma is not rare. The most frequent CT finding is a well-defined, lobulated mass with inhomogeneous enhancement.
Subject(s)
Humans , Bronchi , Carcinoma, Small Cell , Lung , Lymph Nodes , Neoplasm Metastasis , Retrospective StudiesABSTRACT
Primary malignant pericardial mesothelioma(PMPM) is more rare than heart tumor, and the term of mcsothelioma was first used by Adami in 1910, although the lesion was Hrst descripted by Wagner in 1870. Most of 1:le reported 40 cascs have becn diagnosed on autopsy. Antemortem diagnosis are rarely reported with only 40 cases in the world. According to Cohen, its incidence in 500,000 autopsies were 2.2. An analysis of the recent review shows that an antemortem diagnosis was made in only 19~25% of total cases. This report co sist of a case of our experience of PMPM.