{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:19:19Z","timestamp":1747181959800,"version":"3.40.5"},"reference-count":12,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2020,4,22]],"date-time":"2020-04-22T00:00:00Z","timestamp":1587513600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["The Journal of Dermatology"],"published-print":{"date-parts":[[2020,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Lymphomatoid papulosis (LyP) is a self\u2010limiting cutaneous T\u2010cell lymphoproliferative disorder that may progress into malignant lymphoma. Most of the previously reported associated lymphomas are primary cutaneous anaplastic large\u2010cell lymphoma and mycosis fungoides with a low mortality rate. We report a case of primary cutaneous peripheral T\u2010cell lymphoma, not otherwise specified (pcPTCL\u2010NOS), associated with LyP after long\u2010term follow up. The patient was a 79\u2010year old Japanese man followed up for 9\u00a0years. He suddenly developed a 3\u2010cm ulcerated lesion on his forehead, which was diagnosed as an exacerbation of LyP. The lesion regressed after conservative treatment, but the patient soon developed multifocal pcPTCL\u2010NOS. Thereafter, the patient developed pneumonia and cerebral infarction and died within a few months of the onset of malignant lymphoma. Aggressive cutaneous lymphoma may develop in LyP patients. The present case re\u2010emphasizes the need for careful follow up of patients with persistent LyP.<\/jats:p>","DOI":"10.1111\/1346-8138.15351","type":"journal-article","created":{"date-parts":[[2020,4,23]],"date-time":"2020-04-23T05:36:38Z","timestamp":1587620198000},"page":"641-645","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Primary cutaneous peripheral T\u2010cell lymphoma, not otherwise specified, associated with lymphomatoid papulosis after a 9\u2010year follow up: A case report"],"prefix":"10.1111","volume":"47","author":[{"given":"Kyoko","family":"Muraoka","sequence":"first","affiliation":[{"name":"Departments of Department of Dermatology Wakayama Medical University Wakayama 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