Lymphomatoid papulosis

LyP is a skin-limited disease that most frequently affects the trunk and extremities. It is characterized by papular, papulo-necrotic, and/or nodular skin lesions at various stages of development. The number of lesions may vary from a few to more than a hundred.

Individual lesions disappear within 3-12 weeks and may leave behind superficial scars. The duration of the disease may vary from several months to greater than 40 years.

In 20% of patients, LyP may be preceded by, associated with, or followed by another type of malignant lymphoma, generally mycosis fungoides, cutaneous anaplastic large cell lymphoma, or Hodgkin lymphoma.

LyP

Lymphomatoid papulosis (LyP) is a chronic, recurrent, self-healing skin disease that combines a usually benign clinical course with histological features suggestive of a cutaneous T-cell lymphoma.

238.79 Other lymphatic and hematopoietic tissues

D47.7 Other specified neoplasms of uncertain or unknown behavior of lymphoid, hematopoietic, and related tissue

Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J (Eds):
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues (Revised 4th edition)
IARC: Lyon 2017
Section: Section: Mature T- and NK-cell neoplasms
Pages: Pages: 392-395

International Classification of Diseases for Oncology, Third Edition, Second Revision. Geneva: World Health Organization, 2020
Section: ICD-O-3.2 (2020) Morphological Codes
Pages: http://www.iacr.com.fr/index.php?option=com_content&view=category&layout=blog&id=100&Itemid=577