{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T11:41:18Z","timestamp":1783942878684,"version":"3.55.0"},"reference-count":14,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2024,9,9]],"date-time":"2024-09-09T00:00:00Z","timestamp":1725840000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Pediatr Dev Pathol"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:p>We present a case of a 13-year-old patient with a distinct tumor with both granular cell and perineurial elements, located on the lower lip. The patient presented with a long-standing lip mass that was clinically felt to most likely represent a mucocele. Following surgical excision, histopathological examination revealed a well-circumscribed tumor composed of granular cells with positive S100 protein staining and spindled cells positive for EMA and GLUT-1, confirming mixed neuroectodermal and perineurial origin. This is the first case documenting a perineurial-granular cell hybrid tumor in a patient under 18\u2009years old, and the first to be reported in the head and neck. This case expands our understanding of hybrid PNSTs, emphasizing the importance of considering diverse clinical presentations, especially in the context of rare pediatric occurrences in atypical locations.<\/jats:p>","DOI":"10.1177\/10935266241274529","type":"journal-article","created":{"date-parts":[[2024,9,9]],"date-time":"2024-09-09T07:51:33Z","timestamp":1725868293000},"page":"55-57","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Rare Hybrid Perineurioma and Granular Cell Tumor: A Pediatric Case"],"prefix":"10.1177","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-8348-8919","authenticated-orcid":false,"given":"Kennedy H.","family":"Sun","sequence":"first","affiliation":[{"name":"Division of Plastic and Reconstructive Surgery, Children\u2019s National Hospital, Washington, DC, USA"},{"name":"Division of Pathology and Laboratory Medicine, Children\u2019s National Hospital, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5834-1234","authenticated-orcid":false,"given":"Sonia P.","family":"Goyal","sequence":"additional","affiliation":[{"name":"Division of Plastic and Reconstructive Surgery, Children\u2019s National Hospital, Washington, DC, USA"},{"name":"Division of Pathology and Laboratory Medicine, Children\u2019s National Hospital, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Evelyn M.","family":"Kim","sequence":"additional","affiliation":[{"name":"Division of Plastic and Reconstructive Surgery, Children\u2019s National Hospital, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Esperanza","family":"Mantilla-Rivas","sequence":"additional","affiliation":[{"name":"Division of Plastic and Reconstructive Surgery, Children\u2019s National Hospital, Washington, DC, 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