LAUREN G. COLLINS, M.D., CHRISTOPHER HAINES, M.D., ROBERT PERKEL, M.D., and ROBERT E. ENCK, M.D.

The diagnostic evaluation of patients with suspected lung cancer includes tissue diagnosis, a complete staging work-up, and a functional patient evaluation. Treatment and prognosis depend on the type and stage of the tumor. Smoking cessation remains the most important factor in lung cancer prevention.

DEAN THOMAS SCOW, M.D., GARY K. LUTTERMOSER, M.D., and KEITH SCOTT DICKERSON, M.D., M.S.

Leukotriene inhibitors are a popular prescription for the management of persistent asthma because of their convenient dosing, perceived ease of use, and concerns about the adverse effects of long-term inhaled corticosteroid use. However, evidence is mixed concerning their effectiveness in treating asthma and other allergic disorders.

SHASHI K. BHATIA, M.D., and SUBHASH C. BHATIA, M.D.

Although diagnostic criteria for depression in children and adolescents are similar to those for adults, symptom expression may vary with developmental stage. Safe and effective treatment requires accurate diagnosis, suicide risk assessment, and use of evidence-based therapies.

Patient information: "Depression in Children and Teens," p. 83

EUGENE S. LEE, M.D., PH.D., DAVID L. DAWSON, M.D., and WILLIAM C. PEVEC, M.D.

Advances in treatment options for vascular illnesses have changed the way carotid artery disease, abdominal aortic aneurysms, and peripheral arterial disease are managed. Family physicians have a role in vascular screening, diagnosis, and referring patients for treatment when indicated.