A 27-year-old woman with a history of easy bruising, nosebleeds, and menorrhagia had a peripheral smear evaluation as shown. Platelet aggregation studies were performed and showed hypoaggregation using ristocetin as an agonist, but were otherwise normal.
Andrew Norgan, M.D., Ph.D.
Resident, Clinical Pathology
Dong Chen, M.D., Ph.D.
Consultant, Division of Hematopathology
Associate Professor of Laboratory Medicine and Pathology,
Mayo Clinic College of Medicine