A 77-year-old man with a progressively dry cough (two months duration) was admitted with hemoptysis. Chest computed tomography (CT) revealed left lingular lobe consolidation and one thick-walled cavity lesion over the left lower lobe, which was accompanied by satellite micro-nodules in a tree-in-bud pattern. CT-guided biopsy confirmed mycobacterial infection, and subsequent culture yielded Myco...

Most large or fatal pulmonary embolisms (PE) at autopsy were unsuspected ante mortem. Newly identified clinical characteristics of PE enhance our ability to identify potential patients. Because of laudable efforts to diagnose PE, about 90% of outpatient computed tomographic (CT) angiograms are negative. Overuse of CT angiography has resulted in huge expenses and exposure of many to radiation. A...

Coronary artery fistulas have been diagnosed with aortography, coronary angiography, and coronary computed tomography (CT). A large fistula can be occasionally found as a mass lesion on echocardiography but cannot be easily confirmed. Here, we report a new diagnostic approach to coronary artery fistulas using a contrast agent and transthoracic echocardiography. Transthoracic echocardiography of...

Computed tomographic pulmonary angiography is the gold standard in diagnosing pulmonary embolism (PE). There is increasing use of dual energy CT (DECT) scanners in producing iodine perfusion maps. These maps assist in diagnosing a PE. However, many conditions can mimic perfusion defects on iodine maps including artefacts, pleural effusion, pulmonary artery compression, emphysema, vasculitis, pu...

Pulmonary artery sarcomas are rare, difficult-to-diagnose tumors that frequently mimic chronic pulmonary thromboembolism. We report the cases of two female patients with clinical signs of dyspnea and lung masses associated with pulmonary artery filling defects on chest CT angiography. We performed 18F-fluorodeoxyglucose positron emission tomography, which revealed increased radiotracer uptake i...

Pulmonary artery sarcomas are rare, difficult-to-diagnose tumors that frequently mimic chronic pulmonary thromboembolism. We report the cases of two female patients with clinical signs of dyspnea and lung masses associated with pulmonary artery filling defects on chest CT angiography. We performed 18F-fluorodeoxyglucose positron emission tomography, which revealed increased radiotracer uptake i...

Method Five female patients (age 23, 37, 58, 70 and 76, mean 52.8) were diagnosed as massive pulmonary embolism with either acute irreversible pulmonary failure or cardiac collapse (2 CPR) by Chest CT or pulmonary angiography. All patients required ECMO support in addition to 2 endovascular Angiojet aspiration or 1 surgical pulmonary thromboembolectomy. The duration for ECMO survivors were 1, 2...

Pulmonary arteriovenous fisula is a rare condition in which there is abnormal connection between pulmonary arteries and veins. We describe this condition is an 18-year-old male who presented with cyanosis, clubbing, polycythemia and multiple brain abscesses. The patient was diagnosed as pulmonary arteriovenous fistula based on CT scan and on pulmonary angiography. The patient had a complete rec...

CONTEXT The clinical validity of using computed tomography (CT) to diagnose peripheral pulmonary embolism is uncertain. Insufficient sensitivity for peripheral pulmonary embolism is considered the principal limitation of CT. OBJECTIVE To review studies that used a CT-based approach to rule out a diagnosis of pulmonary embolism. DATA SOURCES The medical literature databases of PubMed, MEDLIN...