Pernicious anemia manifesting as angina pectoris.

Here we describe a case of angina pectoris in a patient for whom an extensive cardiovascular workup was done, with negative results. Eventually, the cause of his symptoms was found to be pernicious anemia. Although angina is an uncommon manifestation of pernicious anemia, a review of the literature suggests that the correlation between anemia and angina has been well described. Our case highlights an important differential diagnosis to consider for patients with exercise-induced chest pain and serves to emphasize the attention that should be focused on simple screening laboratory studies. The emphasis in this case is the sequence in which the studies are done. A simple complete blood count with proper interpretation and intervention at the outset of evaluation could possibly have prevented a number of unnecessary, invasive, and costly studies.