نتایج جستجو برای: cardiac tumors
تعداد نتایج: 451802 فیلتر نتایج به سال:
طی دهه اخیر، پردازش تنک سیگنال ها به عنوان ابزاری قدرتمند و جایگزینی کارا برای تبدیل های کلاسیک، توجه زیادی را به خود جلب کرده است. استفاده از نمایش تنک سیگنال ها در مسائل طبقه بندی نیز نتایج موفقیت آمیزی به همراه داشته است. با این حال، کیفیت عملکرد این طبقه بندی کننده ها در شرایط سخت، از جمله در مواردی که داده های هر طبقه تنوع زیادی داشته و یا ابعاد داده ها در مقایسه با تعداد داده های آموزشی ز...
Primary cardiac tumors are rare in children with a low incidence varying from 0.0017 to 0.28% in autopsy studies. Approximately 90% of the reported primary cardiac tumors in the pediatric population are benign and the most common subtype is rhabdomyomas accounting for approximately 60%, while hemangiomas are rare primary tumors with a 5% incidence. Hypoplastic left heart syndrome is abnormal de...
In this report, we present a case of 35-year-old lady who had presented with atypical chest pain and exertional breathlessness for past six months. Transthoracic and transesophageal echocardiograms showed a well-circumscribed, echo-dense mass in the right atrium, attached to the interatrial septum at the level of atrioventricular junction and in the vicinity of coronary sinus ostium. She underw...
Cardiac sarcomas are rare primary cardiac tumors. Because of the few reported cases and relatively poor prognosis of primary cardiac sarcomas, the metastatic potential and behavior of these tumors is not fully understood. In one reported case of cardiac sarcoma metastasizing to the brain (1), the primary tumor could not be resected because of the patient’s poor medical condition and the concurr...
Cardiac myxomas make up approximately 50% of all benign cardiac tumors and represented 86% of all surgically treated cardiac tumors. Most of them originated from the left atrium, in some cases from both of atria. We report a case of male patient with biatrial myxomas and other extra-cardiac involvement: hypophyseal adenoma, enlargement of thyroid gland, tubular adenoma polyp of colon and bilate...
Approximately one-quarter of all cardiac tumors present with systemic embolization. Cardiac papillary fibroelastomas (CPF) represent a potential embolic source, accounting for 8% of all primary cardiac tumors, second in frequency after cardiac myxomas. Most case reports describe papillary fibroelastoma as a potential source for stroke, but histopathological evidence of actual tumor fragment cau...
The result of the management of the seven cases of cardiac tumors reported by Bini et al. (I) was quite discouraging as only one child survived 3 months. In a recent review of cardiac tumors reported in the English language between 1972 and 1977 (2), I found 47 reported pediatric cases with a survival rate of more than 6 months in 55% of the cases. Forty-four of these tumors were benign with a ...
Despite cardiac metastases are found in about 20% of cancer deaths, the presence of primary cardiac tumors is rare. Most primary tumors are benign, and malignant tumors comprise about 15%. We report a 21-year-old man with fever, dyspnea, and hemoptysis that was diagnosed with angiosarcoma of the right atrium and pulmonary metastasis. Patient was submitted to surgical tumor resection without adj...
BACKGROUND Cardiac involvement by a malignant tumor is rare. However, this is a case of right heart failure due to cardiac metastasis from a yolk sac tumor. Although a few case reports of cardiac metastasis from yolk sac tumors have been published, to our knowledge this is the first instance of multiple metastases to the right ventricular of yolk sac tumor in an adult male. CASE REPORT The pati...
Primary cardiac tumors are rare. Although the majority are benign, they may cause significant morbidity and mortality. Two-dimensional transthoracic echocardiography (2D-TTE) is the primary imaging modality for the diagnosis of cardiac tumors. New and more complex non-invasive imaging modalities, such as cardiac magnetic resonance (CMR), do not always provide an added value. This is illustrated...
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