Noninvasive coronary angiography has become an important imaging tool in the evaluation of patients with and at risk for coronary artery disease (CAD). Multidetector computed tomographic (MDCT) angiography offers excellent negative predictive value (>/=95%) for the absence of coronary artery disease and has shown promising results in evaluating allograft vasculopathy, bypass grafts, and degener...

OBJECTIVE To report a rare case of spontaneous extracranial epidural emphysema. CLINICAL PRESENTATION AND INTERVENTION An 18-year-old woman with a recent diagnosis of squamous cell carcinoma of the esophagus presented with acute onset of cough, dyspnea and subcutaneous emphysema. An esophageal endoscopy revealed an ulcerative lesion in the upper third of the esophagus that was diagnosed as sq...

BACKGROUND Intramedullary neurosarcoidosis may be the first and only manifestation of the disease and may mimic an idiopathic inflammatory demyelinating syndrome both clinically and on neuroimaging results. METHODS AND RESULTS Two patients who were seen initially with a relapsing-remitting neurologic course and a cervical intramedullary lesion on magnetic resonance imaging findings are report...

The diagnosis of pulmonary embolism may be confounded by a clinical presentation that is often subtle or atypical. Therefore pulmonary angiography, although invasive, has been widely used to prove pulmonary embolism. The aim of this review is to discuss the value of non-invasive techniques, such as lung scan and chest computed tomography scan, in the diagnosis of pulmonary embolism. Ventilation...

1 Division of Neurology, National University Hospital, Singapore Address for Correspondence: Dr Vijay Sharma, Division of Neurology, Department of Medicine, National University Hospital, Singapore 119074. Email: [email protected] A 58-year-old Chinese man was admitted because of increasing lethargy and confusion over 4 days. He had been taking hydrochlorthiazide for hypertension and regula...

MYCOBACTERIUM AVIUM complex (MAC) consists of nontuberculous mycobacteria that cause disease in immunocompromised and immunocompetent hosts. The organisms are ubiquitous in the environment, and acquisition occurs through ingestion or inhalation of aerosols from soil, water, or biofilms. Disease may manifest as disseminated infection, soft tissue infection, chronic pneumonia, or hypersensitivity...

Tuberculosis, a chronic infectious disease caused by Mycobacterium tuberculosis, may invade all organs but mainly affect the lungs. We report a case of disseminated tuberculosis with hepatic, pericardial and pleural involvement and a review of the relevant literature. A 64-year-old Portuguese male was admitted with epigastric and right upper quadrant pain associated with low grade fever, fatigu...

We report a case of pleomorphic adenoma of the trachea in an 8-year-old boy who required emergency surgery for severe respiratory distress. Chest computed tomographic scan and bronchoscopy showed a relatively large mass in distal trachea and right main bronchus and destruction of the lung parenchyma. The patient was subjected to right carinal resection, pneumonectomy, and pericardial patch trac...

Contrast-enhanced computed tomographic (CT) scans are being performed daily for many reasons. They are especially useful for the evaluation of patients with acute chest symptoms because myocardial infarction, pulmonary embolism, and aortic dissection have overlapping clinical presentations. Indeed, advances in technology and the introduction of multidetector CT scan have enabled better evaluati...

In the field of respiratory medicine, chest radiography and chest CT have to date been the main modalities of imaging used in routine medical care. The word tomosynthesis is formed from tomography and synthesis, tomosynthesis is a kind of digital tomography which is an imaging modality capable of reconstructing a coronal plane section of arbitrary height from a single tomographic scan 1) . The ...