primary cutaneous CD30+ T-cell lymphoproliferative disease lymphomatoid papulosis https://rarediseases.info.nih.gov/diseases/6944/lymphomatoid-papulosis https://www.malacards.org/card/lymphomatoid_papulosis icd11.foundation:1791207220 ONCOTREE:LYP ICD9:447.8 Lymphomatoid papulosis (LyP) is a rare cutaneous condition characterized by chronic, recurrent, and self-regressing papulonodular skin eruptions. It belongs to the spectrum of primary cutaneous CD30+ lymphoproliferative disorders, along with primary cutaneous anaplastic large cell lymphoma (primary C-ALCL) with which it shares overlapping clinical and histopathologic features. MEDGEN:61534 Orphanet:98842 NCIT:C3721 MedDRA:10056670 UMLS:C0206182 SCTID:31047003 ICDO:9718/1 MONDO:0020326 LyP MESH:D017731 LYP GARD:0006944