Definition
LyP is a primary cutaneous lymphoproliferative disorder that clinically manifests as relapsing multiple, self-regressing papulonodular lesions and is histologically characterized by atypical large CD30+ lymphoid cells. Together with primary cutaneous anaplastic large-cell lymphoma (PCALCL), LyP belongs to the spectrum of primary cutaneous CD30+ lymphoproliferative disorders according to the WHO-EORTC classification for primary cutaneous lymphomas and the WHO classification for tumors of hematopoietic and lymphoid tissues (2008, 4th edition).
Clinical Features
Incidence
The estimated prevalence is 1–2 cases per 1,000,000 inhabitants.
Age
LyP may affect patients at all ages but occurs mostly in the fourth and fifth decade. Children may also be affected.
Sex
The male to female ratio is 1.5:1.
Site
LyP may involve all body regions. The buttocks and the extremities are predilection sites. LyP lesions are only rarely found in the head and neck region. Involvement of the oral...
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References and Further Reading
Bekkenk, M. W., et al. (2000). Primary and secondary cutaneous CD30+ lymphoproliferative disorders: A report from the Dutch Cutaneous Lymphoma Group on the long-term follow-up data of 219 patients and guidelines for diagnosis and treatment. Blood, 95, 3653–3661.
Drews, R., Samel, A., & Kadin, M. E. (2000). Lymphomatoid papulosis and anaplastic large cell lymphomas of the skin. Seminars in Cutaneous Medicine and Surgery, 19, 109–117.
Karai, L. J., Kadin, M. E., Hsi, E. D., Sluzevich, J. C., Ketterling, R. P., Knudson, R. A., & Feldman, A. L. (2013). Chromosomal rearrangements of 6p25.3 define a new subtype of lymphomatoid papulosis. American Journal of Surgical Pathology, in press.
Kempf, W. (2006). CD30+ lymphoproliferative disorders: Histopathology, differential diagnosis, new variants, and simulators. Journal of Cutaneous Pathology, 33(Suppl 1), 58–70.
Kempf, W., Levi, E., Kamarashev, J., Kutzner, H., Pfeifer, W., Petrogiannis-Haliotis, T., Burg, G., & Kadin, M. E. (2002). Fascin expression in cutaneous CD30-positive lymphoproliferative disorders. Journal of Cutaneous Pathology, 29, 295–300.
Kempf, W., Pfaltz, K., Vermeer, M. H., et al. (2011), EORTC, ISCL, and USCLC consensus recommendations for the treatment of primary cutaneous CD30-positive lymphoproliferative disorders: lymphomatoid papulosis and primary cutaneous anaplastic large-cell lymphoma. Blood, 118, 4024–4035.
Kempf, W., Kazakov, D.V., Schärer, L., Rütten, A., Mentzel, T., Paredes, B. E., Palmedo, G., Panizzon, R. G., & Kutzner, H. (2013). Angioinvasive lymphomatoid papulosis: a new variant simulating aggressive lymphomas. American Journal of Surgical Pathology, 37, 1–13.
Macaulay, W. L. (1968). Lymphomatoid papulosis. A continuing self-healing eruption, clinically benign–histologically malignant. Archives of Dermatology, 97, 23–30.
Saggini, A., Gulia, A., Argenyi, Z., Fink-Puches, R., Lissia, A., Magaña, M., Requena, L., Simonitsch, I., & Cerroni, L. (2010). A variant of lymphomatoid papulosis simulating primary cutaneous aggressive epidermotropic CD8+ cytotoxic T-cell lymphoma. Description of 9 cases. American Journal of Surgical Pathology, 34, 1168–1175.
Willemze, R., Meyer, C. J., Van Vloten, W. A., & Scheffer, E. (1982). The clinical and histological spectrum of lymphomatoid papulosis. British Journal of Dermatology, 107, 131–144.
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Kempf, W. (2016). Lymphomatoid Papulosis. In: Massi, D. (eds) Dermatopathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-30006-1_445
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DOI: https://doi.org/10.1007/978-3-319-30006-1_445
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