Tag Archives: Neutrophilia

June 2021—A case of monoclonal B-cell lymphocytosis and a tour of B- and T-cell morphologies were at the heart of a CAP20 virtual presentation on neoplastic lymphocytosis. Kyle Bradley, MD, associate professor of hematopathology and director of surgical pathology at Emory University, spoke last fall on reactive (CAP TODAY, May 2021) and neoplastic lymphocytosis, with Olga Pozdnyakova, MD, PhD, who addressed neutrophilia and monocytosis (CAP TODAY, February and March 2021). Together they took attendees through a morphology-based approach to hematopoietic neoplasms presenting with an abnormal WBC differential.

February 2021—Granulocyte morphology may contain clues to neutrophilia etiology, and that was the focus of a CAP20 virtual presentation by Olga Pozdnyakova, MD, PhD, associate professor of pathology at Harvard Medical School and medical director of the hematology laboratory at Brigham and Women’s Hospital. Reactive changes can mimic myeloproliferative neoplasm, but myeloproliferative neoplasm can have reactive morphology, she said. Pathologists can piece together clinical and morphological clues, “especially in concert with the clinical team, that may help them decide whether the changes are more reactive or more neoplastic in nature,” she told CAP TODAY in a follow-up interview. Neutrophilia is defined as greater than 7.7 × 10⁹/L or two standard deviations above the mean, and it is important to note whether it is present in the context of the left shift.