Review Question - QID 210839

A 75-year-old man presents to the physician with a complaint of persistent back pain. The patient states that the pain has been constant and occurs throughout the day. He says that he has also been experiencing greater fatigue when carrying out his daily activities. On review of systems, the patient notes that he lost more than 10 pounds in the past month despite maintaining his usual diet and exercising less often due to his fatigue. His temperature is 98.6°F (37°C), blood pressure is 139/81 mmHg, pulse is 90/min, respirations are 12/min, and oxygen saturation is 98% on room air. A physical exam is notable for a systolic murmur at the right sternal border, mild crackles at the bases of both lungs and tenderness to palpation of his lumbar spine. Laboratory values are below:

Serum:
Na+: 141 mEq/L
Cl-: 101 mEq/L
K+: 4.2 mEq/L
HCO3-: 23 mEq/L
BUN: 20 mg/dL
Glucose: 101 mg/dL
Creatinine: 1.6 mg/dL
Ca2+: 12.8 mg/dL

A peripheral blood smear is ordered for the patient’s work-up. Which of the following would be the most likely finding on peripheral blood smear?