Alaska's Western Arctic Caribou herd forms aggregations or groups that can stretch for miles. Once back in town the photos were laid out and areas of overlap marked so that no caribou were double-counted. It took 11 of us three days to put the overlap lines on photos, Dau said.
Chest Radiology > Pathology > Pericardial Effusion. Pericardial effusion causes an enlarged heart shadow that is often globular shaped (transverse diameter is disproportionately increased). A fat pad sign, a soft tissue stripe wider than 2mm between the epicardial fat and the anterior mediastinal fat can be seen anterior to the heart on a lateral view.
When the intrapericardial pressure becomes high enough to impede cardiac filling, cardiac function becomes impaired, and cardiac tamponade can be considered to be present. (See Cardiac tamponade.) A general overview of the diagnosis and treatment of pericardial effusion will be presented here. The full spectrum of causes of pericardial disease, management of specific causes of pericardial disease, and the details of pericardial fluid drainage are discussed separately.