Adenoid ameloblastoma in the posterior maxilla: a case report and review of the literature

Arruda, José Alcides Almeida de; Noronha, Mariana Saturnino de; Abreu, Lucas Guimarães; Lacerda, Júlio César Tanos de; Silva, Tarcı́lia Aparecida; Mesquita, Ricardo Alves

doi:10.1007/s10006-020-00830-1

Cited by 9 publications

(9 citation statements)

References 31 publications

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“…Loyola et al [13] stated that although basophilic mucoid material may be observed within the duct-like spaces, secretory component was not detected. In the most recent case of AAD reported by Arruda et al, Alcian blue staining revealed a significant amount of basophilic material and scarce PAS-positive eosinophilic material in duct-like spaces, indicating its mucoid nature [25].…”

Section: Resultsmentioning

confidence: 88%

“…The fraction of Ki-67-positive tumor cells, commonly known as Ki-67 labeling index, determines the fraction of a given cell population in the active growth phase and is often correlated with the aggressiveness of any lesion [64]. Ki-67 expression was variable in AAD cases, wherein it was borderline to low in the majority of the reported cases (n = 10) [11,[20][21][22][23][24][25]. However, the mean value of proliferative index as assessed by Ki-67 positive cells (72.4 + 24.9 positive cells per high-power field) in the five cases of AAD reported by Loyola et al was found to be higher than AOT and AM, and was closer to that observed in AMCA.…”

Section: Resultsmentioning

confidence: 99%

“… 13 In the most recent case of AAD reported by Arruda et al ., Alcian blue staining revealed a significant amount of basophilic material and scarce PAS-positive eosinophilic material in duct-like spaces, indicating its mucoid nature. 25 …”

Section: Resultsmentioning

confidence: 99%

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Adenoid Ameloblastoma with Dentinoid

Sachdev¹,

Chettiankandy²,

Sardar³

et al. 2022

Sultan Qaboos Univ Med J

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Ameloblastoma and adenomatoid odontogenic tumors are the most common odontogenic neoplasms. However, hybrid variant of the two lesions, Adenoid Ameloblastoma with dentinoid is extremely rare. The lesion comprises of characteristic histopathological features of Ameloblastoma and Adenomatoid odontogenic tumor and also shares certain clinical characteristics with either of the entities. Adenoid Ameloblastoma with dentinoid may be considered at the more aggressive end of spectrum of benign odontogenic neoplasms. Owing to the frequent tendency of lesion to be underdiagnosed, careful histopathological screening of submitted biopsies is warranted. With the increase in number of reported cases in the recent years, it is likely to be included as a separate entity in the upcoming WHO classification. The present systematic review aims at collectively presenting the demographic, clinical, radiographic and histopathological features, treatment performed along with its outcome for all the cases of Adenoid Ameloblastoma with dentinoid reported in scientific literature till date. Keywords: Hybrid Odontogenic Tumor; Adenomatoid Odontogenic Tumor; Adenoameloblastoma; dentinoameloblastoma; Immunohistochemistry

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

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Adenoid Ameloblastoma with Dentinoid

Sachdev¹,

Chettiankandy²,

Sardar³

et al. 2022

Sultan Qaboos Univ Med J

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“…However, it poses a diagnostic challenge when sampled via FNA as it may be confused with malignant salivary gland neoplasms. 10,[16][17][18] Nonetheless, the presence of gland-like spaces should come as no surprise when considering the embryologic origin of teeth and salivary glands, as both tissues differentiate from budding of the primitive stomodeum in the late embryonic period. The current case is unique in that it demonstrates the cytologic characteristics of an ameloblastoma with adenoid, or gland-like, morphology, evoking a differential diagnosis of adenoid cystic carcinoma, basal cell adenocarcinoma, and non-intestinal-type sinonasal adenocarcinoma; and illustrating a potential pitfall in the workup of adenoid ameloblastomas via FNA.…”

Section: Discussionmentioning

confidence: 99%

“…The significance of this histological variant is not known. However, it poses a diagnostic challenge when sampled via FNA as it may be confused with malignant salivary gland neoplasms 10,16–18 . Nonetheless, the presence of gland‐like spaces should come as no surprise when considering the embryologic origin of teeth and salivary glands, as both tissues differentiate from budding of the primitive stomodeum in the late embryonic period.…”

Section: Discussionmentioning

confidence: 99%

Ameloblastoma with adenoid features: Case report with cyto‐histopathologic correlation and molecular findings

Jofré

Roth

Lahouti

et al. 2022

Diagnostic Cytopathology

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Ameloblastomas are benign but locally aggressive odontogenic tumors that commonly present as expansile lesions in the tooth-bearing areas. Fine-needle aspiration (FNA) biopsies of ameloblastomas are rare in clinical practice, and only a handful of case reports and series have described their cytologic features. We present the case of a 70-year-old woman with a large and disfiguring maxillary sinus soft tissue mass sampled via transcutaneous FNA. Aspirate smears were composed of small clusters of cohesive and monotonous basaloid cells. The accompanying cellblock showed similar clusters of basaloid cells in gland-like, or "adenoid," configurations, eliciting a differential diagnosis that included sinonasal and salivary gland neoplasms. Excisional surgery material was consistent with ameloblastoma with adenoid morphology.Next-generation sequencing (NGS) analysis demonstrated FGFR2 and SMO pathogenic variants. This case exemplifies several uncommonly described features of ameloblastomas in cytology, including cyto-histologic correlation, adenoid morphology, and NGS findings. Awareness of the cytologic features of this neoplasm are important for cytopathologists confronted with maxillary sinus lesions.

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Die neue WHO-Klassifikation der Kiefertumoren

Haefliger

Baumhoer

2023

Pathologie

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ZusammenfassungOdontogene Tumoren und Kiefertumoren umfassen ein breites Spektrum an Läsionen, darunter Neoplasien, hamartomatöse Veränderungen und Entwicklungsstörungen. Seit Anfang 2022 ist eine Beta-Version der 5. Auflage der WHO-Klassifikation für Kopf-Hals-Tumoren online verfügbar, die voraussichtlich Mitte 2023 auch als Printversion erscheinen wird. Konzeptionell hat sich im Vergleich zur 4. Auflage nicht viel verändert. Die Reihenfolge der Läsionen ist stringenter nach Dignität geordnet und die gleichen Tumoren werden nicht mehr in verschiedenen Kapiteln lokalisationsabhängig mehrfach beschrieben. Diagnostische Kriterien werden neu in „essential“ und „desirable“ zusammengefasst. Zusätzlich zu den klinischen Aspekten wird nun auch die Bildgebung miteinbezogen und die Klassifikation damit interdisziplinär. Vereinzelt sind auch neue Läsionen erstmals aufgeführt. Dieser Artikel gibt einen Überblick über die Neuerungen der neuen Klassifikation mit einem speziellen Fokus auf die Einteilung der fibroossären Kieferläsionen.

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Adenoid ameloblastoma in the posterior maxilla: a case report and review of the literature

Cited by 9 publications

References 31 publications

Adenoid Ameloblastoma with Dentinoid

Adenoid Ameloblastoma with Dentinoid

Ameloblastoma with adenoid features: Case report with cyto‐histopathologic correlation and molecular findings

Die neue WHO-Klassifikation der Kiefertumoren

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