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Updated: Aug 11, 2026
Assessing the Development of Murine Plasmacytoid Dendritic Cells in Peyer's Patches Using Adoptive Transfer of Hematopoietic Progenitors
Published on: March 17, 2014
Pathology quiz case: Plasmacytoid dendritic cell neoplasm
Quinn A Dunlap1, Kristine E Day, Samuel G Borak
1Department of Surgery, Division of Otolaryngology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Insights
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) can present unusually as a paranasal sinus tumor. Early diagnosis via flow cytometry and immunohistochemistry is crucial for this rare malignancy.
Area of Science:
- Hematology
- Oncology
- Pathology
Background:
- Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy.
- BPDCN typically presents with heterogeneous clinical and immunophenotypic features.
- Its exact origin remains a subject of debate.
Purpose of the Study:
- To report a unique case of BPDCN presenting as a primary paranasal sinus tumor.
- To emphasize the diagnostic challenges and heterogeneity of BPDCN.
- To highlight the importance of early diagnosis and appropriate diagnostic modalities.
Main Methods:
- Case report detailing a patient with BPDCN.
- Review of diagnostic modalities including flow cytometry and immunohistochemistry.
- Discussion of clinical presentation and literature review.
Main Results:
- A case of BPDCN presenting solely as a primary paranasal sinus tumor was identified.
- The patient had no evidence of cutaneous or systemic involvement.
- This presentation expands the known spectrum of BPDCN manifestations.
Conclusions:
- BPDCN can manifest atypically, even without bone marrow, blood, or skin involvement.
- Flow cytometry and immunohistochemistry are essential for diagnosing unusual BPDCN presentations.
- Early diagnosis is critical for timely treatment initiation and improved patient outcomes.
Abstract:
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy that possesses a heterogenous clinical and immunophenotypic presentation. The current case report describes an interesting and unique presentation of BPDCN as a primary paranasal sinus tumor without evidence of cutaneous or systemic involvement. As such, the report further contributes to the ongoing debate regarding the true putative origin of the neoplasm, as well as highlights the optimal diagnostic modalities, paramount importance of early diagnosis, and vast heterogeneity exhibited by this fascinating malignancy. The atypical presentation described here indicates the manifestations of BPDCN are more heterogenous than previously documented and thus can not be definitively ruled out in the absence of bone marrow, peripheral blood, or cutaneous involvement. Furthermore, atypical neoplastic presentations mandate flow cytometry and adjunctive immunohistochemistry for the definitive diagnosis of BPDCN, and early diagnosis of such neoplasms are critical for rapid initiation of treatment and improved outcomes.
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