Interactive Case Study - October 2026







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PMID: 37156483
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PMID: 35732831
Fernandez-Flores A, Cassarino DS. Plasmacytoid dendritic cells in granulomatous variant of mycosis fungoides. J Cutan Pathol. 2019;46(5):335-342. doi:10.1111/cup.13438
PMID: 30734340
Wu SJ, Hergott CB, Griffin GK, et al. The Clinicopathologic and Genomic Features of Mature Versus Blastic Plasmacytoid Dendritic Cell Neoplasms Arising From Chronic Myeloid Neoplasms. Am J Surg Pathol. Published online April 20, 2026. doi:10.1097/PAS.0000000000002556
PMID: 42008303
Dargent JL, Henne S, Pranger D, et al. Tumor-forming plasmacytoid dendritic cells associated with myeloid neoplasms. Report of a peculiar case with histopathologic features masquerading as lupus erythematosus. J Cutan Pathol. 2016;43(3):280-286. doi:10.1111/cup.12639
PMID: 26449631
Tomasini D, Mentzel T, Hantschke M, et al. Plasmacytoid dendritic cells: an overview of their presence and distribution in different inflammatory skin diseases, with special emphasis on Jessner's lymphocytic infiltrate of the skin and cutaneous lupus erythematosus. J Cutan Pathol. 2010;37(11):1132-1139. doi:10.1111/j.1600-0560.2010.01587.x
PMID: 20659210
Machan S, Alonso-Dominguez JM, Sánchez García FJ, et al. Plasmacytoid Dendritic Cell Dermatosis Associated to Myeloproliferative/Myelodysplastic Neoplasms. Am J Surg Pathol. 2022;46(12):1623-1632. doi:10.1097/PAS.0000000000001960
PMID: 37156483
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PMID: 38621250
Acknowledgements
Author Profiles
Sara Waqar, MD
Geisinger Medical Center
I am a fourth-year pathology resident at Geisinger Medical Center in Danville, Pennsylvania, with a particular interest in dermatopathology. I have presented cases at ASDP and ISDP conferences, authored research articles, and remain actively engaged in dermatopathology education. I aspire to further develop my expertise in dermatopathology and to contribute meaningfully to the field through clinical practice, research, and teaching.
Jacqueline M. Junkins-Hopkins, MD
Geisinger Medical Center
Dr. Jacqueline M. Junkins-Hopkins is a distinguished dermatopathologist at Geisinger Medical Center, where she serves as a faculty member in dermatopathology and dermatology and contributes to the training of fellows in the dermatopathology fellowship program. She is widely recognized for her diagnostic expertise and long-standing contributions to clinical and academic dermatopathology. Her clinical and research interests focus on cutaneous T cell lymphoma, inflammatory dermatoses, and medical dermatopathology, with a particular emphasis on clinicopathologic correlation in challenging diagnostic scenarios. Through her scholarly contributions, she has advanced the understanding of both neoplastic and inflammatory skin disorders, publishing in leading journals and contributing to the evolving knowledge base in dermatopathology.
Tammie C. Ferringer, MD
Geisinger Medical Center
Dr. Tammie Ferringer is the Division Chief of Dermatologic, Oral and Soft Tissue Pathology and section head and fellowship director of dermatopathology at Geisinger Medical Center in Danville, Pennsylvania. She is a leader in advancing dermatopathology education and training, overseeing a highly regarded fellowship program and shaping the curriculum for dermatology residents with a strong emphasis on clinicopathologic correlation and diagnostic excellence. Her career reflects a sustained commitment to integrating clinical dermatology with histopathology, fostering a generation of dermatopathologists equipped with both diagnostic precision and clinical insight. Dr. Ferringer has held numerous national leadership roles, including service on the boards of the American Board of Dermatology, American Academy of Dermatology, and the ASDP, and participation in dozens of committees shaping education, certification, and practice standards. She has authored numerous peer reviewed articles and textbook chapters and contributed as a co editor of a dermatopathology textbook. Her academic work spans a broad range of topics in dermatopathology, including adnexal tumors, infectious diseases, and immunohistochemistry, reflecting her wide-ranging expertise and passion for advancing the field.
Question:
75-year-old male with papules on chest, back, and arms
Category
Tumors > Lymphomatous/Leukemic Infiltrates
Description