{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T15:25:16Z","timestamp":1778081116504,"version":"3.51.4"},"reference-count":16,"publisher":"Korean Cleft Palate-Craniofacial Association","issue":"6","license":[{"start":{"date-parts":[[2024,11,18]],"date-time":"2024-11-18T00:00:00Z","timestamp":1731888000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["e-acfs.org"],"crossmark-restriction":true},"short-container-title":["Arch Craniofac Surg"],"published-print":{"date-parts":[[2024,12,20]]},"abstract":"<jats:p>The incidence of anaplastic large cell lymphoma is 0.25 cases per 100,000 people. It usually causes lymphadenopathy and B symptoms; however, diverse cutaneous manifestations can also be observed. We report a rare case of anaplastic large cell lymphoma of the scalp, which presented similarly to a ruptured epidermal cyst. A 77-year-old woman visited the outpatient clinic complaining of scalp masses that had appeared 2 months before. One week before her visit, she had undergone incision and drainage at a local clinic but showed no improvement. Before surgery, facial magnetic resonance imaging revealed two suspicious ruptured cystic masses. Surgical excision was performed with a 1-cm free margin from the soft mass. Histopathology confirmed anaplastic lymphoma kinase-negative anaplastic large cell lymphoma. After wide excision and skin grafting for wound reconstruction, followed by consultation with a hemato-oncologist and radiation oncologist, chemotherapy was planned to prevent recurrence. Differentiating anaplastic lymphoma kinase-negative anaplastic large cell lymphoma of the scalp from a ruptured epidermal cyst-like mass proved challenging. We recommend considering the possibility of anaplastic large cell lymphoma if an epidermal cyst-like mass does not respond to antibiotics or conventional dressing, as illustrated by our rare case.<\/jats:p>","DOI":"10.7181\/acfs.2024.00262","type":"journal-article","created":{"date-parts":[[2024,11,18]],"date-time":"2024-11-18T02:01:54Z","timestamp":1731895314000},"page":"298-302","update-policy":"https:\/\/doi.org\/10.7181\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Anaplastic lymphoma kinase-negative primary systemic anaplastic large cell lymphoma mimicking a ruptured epidermal cyst of the scalp: a case report and literature review"],"prefix":"10.7181","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0447-1486","authenticated-orcid":true,"given":"Il 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