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. 2025 Jul;20(3):1974-1976.
doi: 10.1016/j.jds.2025.04.013. Epub 2025 Apr 30.

Adenoid ameloblastoma in the maxilla

Yu-Min Lin  1   2 , Yuk-Kwan Chen  2   3   4 , Wen-Chen Wang  2   3   4 , Chih-Huang Tseng  2   3   4
Affiliations

Adenoid ameloblastoma in the maxilla

Yu-Min Lin et al. J Dent Sci. 2025 Jul.
No abstract available

Keywords: Adenoid ameloblastoma; Maxilla; Odontogenic tumor.

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Conflict of interest statement

The authors have no conflicts of interest relevant to this article.

Figures

Figure 1
Figure 1
Clinical, radiographic, and microscopic photographs of a case of adenoid ameloblastoma. A well-defined radiolucency in the posterior left maxilla, associated with an impacted third molar and root resorption of the second molar (A). Computed tomography identified a hyperdense mass extending into the maxillary sinus with erosion of lateral and posterior walls of left maxillary sinus (B and C). The histopathological examination showed an odontogenic epithelial neoplasm. The peripheral cells exhibited a single layer of ameloblast-like cells with reversed polarity, arranged in a plexiform pattern (D). Multifocal duct-like structures and epithelial whorls were observed (E and F). (Hematoxylin and eosin stain; original magnification; D, 10×; E, 10 × ; F, 20 × ). Immunohistochemically, the tumor cells arranged in a plexiform pattern showed positivity for CK19 and BRAF (G and H). Positive nuclear β-catenin staining was noted in areas exhibiting adenoid features (I). (original magnification; G, 10×; H, 10 × ; I, 10 × ).
See this image and copyright information in PMC

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