Erdheim-Chester disease is a non-Langerhans cell histiocytosis that is progressive and may lead on to multi-organ involvement. Pulmonary involvement is rare, its presentation is nonspecific, and it carries an adverse outcome. Several radiological features, when considered together, may point to the diagnosis.
Aggregate household income in Fredericksburg in 2016: $47,612,316 Distribution of median family income in 2016 (number of people) Median family income in Fredericksburg by age in 2016:
Located 49 miles (79 km) south of Washington, D.C. and 58 miles (93 km) north of Richmond, Fredericksburg is part of the Northern Virginia region and is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.ocated on the Rappahannock River near the head of navigation at the fall line, Fredericksburg developed as the frontier of colonial Virginia shifted west out of the coastal plain. The land on which the city was founded was part of a tract patented in 1671.