Antitrust laws help make sure the different businesses in a marketplace are operating on a level playing field. Some companies use unfair or deceptive practices in order to get a larger share of the market, and it may be difficult to identify unfair behavior in your own company.A business lawyercan help you make sure that your business is operating ethically while helping protect you from unfair actions by other companies.

41 What is the difference between transudate and exudate?

42 I wish to ask about Meigs' syndrome. I know that it is an association of pleural effusion, ascites and benign ovarian tumours or fibromas. Is the effusion transudate or exudate?

43 I have read that patients with cystic fibrosis should not meet each other socially. Why is this?

44 I have a young patient with bilateral hilar lymphadenopathy but no other manifestations of sarcoidosis. How can I make a diagnosis?

45 We have read in your book that continuous oxygen therapy at home reduces mortality in chronic obstructive pulmonary disease (COPD). I am concerned that my patient might develop acute respiratory failure.

46 I have a patient with asthma who is on long-term inhaled corticosteroids. She is very concerned about long-term steroid therapy. Could I replace the steroids with a long-acting beta2 agonist?

47 What is the role of leukotriene-modifying agents in asthma? Question 48 Is it true that the Mantoux test is no longer used?

49 Is there a screening test that is useful for the diagnosis of lung cancer?

50 For how long should treatment be continued for cervical lymphadenopathy and abdominal tuberculosis? What role, if any, do steroids play in the treatment of these conditions?