Jacob Mathew, Rajathi P, Mathew Melwin, Fenn Saramma Mathew
Department of Oral Pathology and Oral Microbiology, Vinayaka Mission's Sankarachariyar Dental College, Vinayaka Mission's Research Foundation (Deemed to be University), NH-47, Sankari Main Road, Ariyanoor, Salem, Tamil Nadu, India.
Department of Periodontics and Oral Implantology, Manipal University College, Malaysia.
Indian J Pathol Microbiol. 2023 Apr-Jun;66(2):388-391. doi: 10.4103/ijpm.ijpm_714_21.
Papilliferous keratoameloblastoma is an extremely rare variant of ameloblastoma, a benign odontogenic tumor, with only seven cases reported in the English language literature. This variant presents with the metaplastic transformation of stellate reticulum-like cells to the extent of forming papillary structures exhibiting superficial keratinization of varying thickness. This paper describes the pathognomonic macroscopic features of this tumor observed during gross examination under the stereo zoom microscope that differentiate it from the other odontogenic tumors which have not been explored in the previously documented cases. Also, in this paper, a detailed comparison of the macroscopic features observed under the stereo zoom microscope during gross examination with the microscopic features of the histologic section has been described proving to be useful in the histological differential diagnosis of the keratinizing variants of ameloblastoma.
乳头状角化成釉细胞瘤是成釉细胞瘤（一种良性牙源性肿瘤）的一种极其罕见的变异型，英文文献中仅报道过7例。该变异型表现为星网状样细胞化生，程度可达形成具有不同厚度表层角化的乳头状结构。本文描述了在体视显微镜下大体检查时观察到的该肿瘤的特征性宏观特征，这些特征将其与先前文献报道病例中未探讨过的其他牙源性肿瘤区分开来。此外，本文还描述了在大体检查时体视显微镜下观察到的宏观特征与组织学切片微观特征的详细比较，这在成釉细胞瘤角化变异型的组织学鉴别诊断中被证明是有用的。
