Work the case

The immature cells in the case have high nuclear-to-cytoplasmic ratio, fine chromatin, one to two nucleoli, and scant basophilic cytoplasm. Two cells each contain one sharply defined reddish-purple needle-like inclusion. Because the training case does not establish myeloid lineage by the focused-review threshold, the defensible morphology description is circulating immature cells, approximately 12% by routine 100-cell manual differential, with rare rod-like cytoplasmic inclusions identified.

The analyzer flag, leukocytosis, anemia, thrombocytopenia, and morphology form a coherent high-concern pattern. Several hypogranular, hyposegmented neutrophils add an abnormal granulocytic feature. The reported platelet count is not independently diagnostic: the film shows no clumps, but the reviewer must assess for giant platelets and use the validated verification pathway if morphology and the electronic count are discordant.

Hypergranular promyelocyte-like morphology or rod-like cytoplasmic inclusions can raise concern for acute promyelocytic leukemia; suspected APL is a medical emergency because consumptive coagulopathy can cause rapidly serious hemorrhage. After the minimum correlation of the finding, CBC, analyzer status, and specimen limitations, promptly notify the designated responsible clinician or review service under the APL/critical-result procedure. Image capture may occur concurrently when available; it must not delay notification. Keep the patient report limited to objective findings and limitations, while designated review, image metadata, and communication details remain internal records. Do not label the image or report as APL before the required diagnostic pathway.