Spindle-cell variant of ameloblastic carcinoma: a report of 3 cases and demonstration of epithelial-mesenchymal transition in tumor progression

Anne C. McLean-Holden, Justin A. Bishop, Harvey P. Kessler, Larry L. Myers, Alaaaldin M. Radwan, Tyler C. Wildey, John M. Wright, Yi Shing Lisa Cheng

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Ameloblastic carcinoma is a rare odontogenic neoplasm that demonstrates the histologic characteristics of ameloblastoma, accompanied by the cytologic features of malignancy. The spindle-cell variant of ameloblastic carcinoma (SCAC) is exceptionally rare, with a total of 10 cases having been reported in the literature to date. Histologically, a prominent sarcomatoid cell population appears to originate from the epithelial (ameloblastic) component. Like conventional ameloblastic carcinoma, most cases of SCAC occur in individuals older than 40 years of age. Here, 3 additional cases of SCAC are reported, 2 of which occurred in young individuals. Diagnostic criteria to aid in the identification of SCAC are proposed. Finally, histologic and immunohistochemical evidence supporting the occurrence of epithelial–mesenchymal transition in SCAC is presented.

Original languageEnglish (US)
Pages (from-to)e113-e121
JournalOral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Volume128
Issue number3
DOIs
StatePublished - Sep 2019

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Pathology and Forensic Medicine
  • Dentistry (miscellaneous)
  • Radiology Nuclear Medicine and imaging

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