Lymphomatoid papulosis type C: Histopathologic features

(A) Diffuse infiltrate of large anaplastic cells with only occasional admixed inflammatory cells. The histological picture is indistinguishable from that of cutaneous anaplastic large cell lymphoma, and clinicopathological correlation is required to make a definite diagnosis.

(B) Staining for CD30.

Reproduced with permission from Rein Willemze, MD, PhD. Published in: Willemze R, Paulli M, Kadin ME. Primary cutaneous CD30-positive T-cell lymphoproliferative disorders. In: WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues, 4th ed, Vol 2, Swerdlow SH, Campo E, Harris NL, et al (Eds), IARC Press 2017. p.392. Copyright © Rein Willemze.

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Lymphomatoid papulosis type C: Histopathologic features