Investigation of suspected malignant pleural effusion

Good article in the latest BMJ:

Rahman NM, Davies RJ, Gleeson FV.
Investigating suspected malignant pleural effusion.
BMJ. 2007 Jan 27;334(7586):206-7.

These are the BTS guidelines referred to in the above article:

Maskell NA, Butland RJ; Pleural Diseases Group, Standards of Care Committee, British Thoracic Society.
BTS guidelines for the investigation of a unilateral pleural effusion in adults.
Thorax. 2003 May;58 Suppl 2:ii8-17.

I note that the BMJ appears to have started a series on "Rational Imaging". Good idea.