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Year : 2021  |  Volume : 25  |  Issue : 2  |  Page : 54-58

Primary cutaneous gamma-delta T-cell lymphoma: Two cases and a review of the literature

1 Department of Dermatology, Center for Dermatology Research, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
2 Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
3 Department of Dermatology, Center for Dermatology Research, Wake Forest School of Medicine; Department of Pathology; Department of Social Sciences and Health Policy, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA; Department of Dermatology, University of Southern Denmark, Odense, Denmark
4 Department of Dermatology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA

Correspondence Address:
Mr. Matthew L Hrin
Department of Dermatology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1071
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jdds.jdds_54_21

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Background: Primary cutaneous gamma delta T cell lymphoma (PCGD TCL) is a rare and rapidly progressive cutaneous malignancy that can be diagnostically challenging. Purpose: To improve characterization of the clinical and histologic features of PCGD-TCL. Methods: We present two patients with PCGD TCL and review an additional 97 PCGD TCL cases from the English literature. Results: A 51 year old male with biopsy proven psoriasis and a previously healthy 31 year old male with vitiligo developed PCGD-TCL. Initial biopsy specimens in both patients suggested tumor stage mycosis fungoides (MF), but subsequent histopathology confirmed PCGD TCL. Ninety-seven patients were identified in the literature, mostly males (53%) with a mean age of 55.2 years. Lesions most commonly involved the lower (60%) and upper (30%) extremities and existed a mean of 26 months before diagnosis. The most common immunohistochemical markers were EBV(-), CD3(+), CD4(-), CD5(-), CD7(-), CD8(-), CD30(-), CD56(+), granzyme-B(+), perforin(+), and βF1(-). Radiation and CHOP chemotherapy were the most common interventions and 52% of patients died. Conclusion: PCGD TCL is a devastating disease that can clinically and histologically mimic more common dermatologic conditions, such as psoriasis and MF, and its diagnosis may require multiple biopsies and review by a multi specialty pathology team.

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