upper/lower lobe predominance

• upper lobe
  • usually site of gtr disease d/t poorer clearance
  • bronchogenic Ca
  • pneumoconioses
  • histiocytosis X
  • sarcoidosis
  • ankylosing spondylitis

• lower lobe
  • scleroderma

© 2002, C.E. Kahn, Jr.
2002-04-18