Medscape | Pneumonia, Heart Failure Among Most-Missed Diagnoses Bloomberg The most common were pneumonia at 6.7 percent, heart failure, 5.7 percent, kidney failure, 5.3 percent, cancer, 5.3 percent and urinary tract infections, 4.8 percent. Difficulty with diagnosing occurred not only during the initial patient exam, but ... Primary Care Doctors Can Make the Wrong Call Diagnostic errors common in primary care, study finds Research Roundup: Patients Hesitant To Focus On Costs |