LAUSR

Rationale: Previous clinical reports of patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN) in pregnancy are rare. Patient concerns: The present study presents the case of 37-year-old women exhibiting third trimester with progressive painless, abdominal skin nodules. Interventions and outcomes: A 37-year-old pregnant woman with BPDCN and partial placenta previa and racket-shaped placenta. After comprehensive evaluation, the pregnancy status ends at 37 weeks and 6 days by cesarean section of lower uterus and no abnormality in the newborn. Lessons: Pregnant women diagnosed with BPDCN in the third trimester should terminate the pregnancy promptly for further treatment.