Unicystic ameloblastoma. A review of 193 cases from the literature

Philipsen, H. P.; Reichart, Peter A.

doi:10.1016/s1368-8375(98)00012-8

Cited by 260 publications

(272 citation statements)

References 32 publications

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“…Lesions with an impacted tooth occur around 20 years earlier with an average of 16 years as against 35 years for other lesions (4). The posterior mandible is the commonest site as was seen in our case (4).…”

Section: Letter To the Editorsupporting

confidence: 50%

“…Unicystic ameloblastoma was first described by Robinson and Martinez in 1977 (3,4,5). It is traditionally considered to be less aggressive with a lower recurrence rate (5).…”

Section: Letter To the Editormentioning

confidence: 99%

“…The differences between unicystic and multicystic ameloblastomas is summarized in Table 1. Diagnosis of unicystic ameloblastoma is by histopathology (4). The histopathological picture can be of simple cystic type, intraluminal and mural types.…”

Section: Letter To the Editormentioning

confidence: 99%

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Cone Beam Computed Tomographic findings in Unicystic Ameloblastoma of the mandible.

G¹,

Ajila²,

Hegde³

et al. 2018

J Turgut Ozal Med Cent

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Ameloblastomas are one of the commonly encountered odontogenic tumours (1). Ameloblastomas are of the following types namely peripheral, solid or multicystic, unicystic, desmoplastic, and malignant (1,2). Unicystic ameloblastoma is a rare variant of ameloblastoma and accounts for around 6% of all ameloblastomas (1). Clinically and radiographically, it resembles a cyst but on histopathological examination has features of ameloblastoma (1). Cases with multilocular radiolucency and histopathology of unicystic ameloblastomas were earlier termed as cystic ameloblastomas. However, this term is no longer used; instead, the lesions are termed as unicystic ameloblastoma (1). The present case describes unicystic ameloblastoma of the posterior mandible in a 42 years old male patient. A 42 years-old-male reported to our department with complaint of pain in the lower left back tooth region last 15 days. He gave history of a fall two weeks previously followed by continuous, throbbing, diffuse pain in the area of the lower jaw and on the right side of the face, radiating till the right ear. There was mild swelling and difficulty in eating and wide opening of the mouth. He consulted a dental practitioner who prescribed antibiotics and advised a panoramic radiograph. Panoramic radiograph showed a well-defined radiolucent lesion approximately 2x4 cms in size located distal to the mandibular left third molar. He was then referred to our institution.Extraoral examination showed no abnormalities. On intraoral examination, a bluish white swelling approximately 1x1cms in size was present from distal and lingual to the crown of the mandibular left third molar. On palpation, the swelling was soft in consistency and non-tender. The third molar appeared to be displaced buccally due to the swelling ( Figure 1A). The second and third molars were vital on electric pulp testing. Panoramic radiograph showed a well-defined radiolucency approximately 3x4 cms in size distal to the mandibular left third molar. Superiorly the radiolucency extended to the alveolar crest and inferiorly, it surrounded the distal root of the third molar with evidence of root resorption. Medially the swelling was along the distal surface of the third molar and laterally extended around 4 cm distal to the third molar. There were no calcifications or loculations within the radiolucency ( Figure 1B).

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Section: Letter To the Editorsupporting

confidence: 50%

“…Unicystic ameloblastoma was first described by Robinson and Martinez in 1977 (3,4,5). It is traditionally considered to be less aggressive with a lower recurrence rate (5).…”

Section: Letter To the Editormentioning

confidence: 99%

See 1 more Smart Citation

Cone Beam Computed Tomographic findings in Unicystic Ameloblastoma of the mandible.

G¹,

Ajila²,

Hegde³

et al. 2018

J Turgut Ozal Med Cent

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“…There are many reports of recurrent cases. Based on histopathology, the follicular type is more likely to recur than the plexiform type in the solid/multicystic type [1] [2]. Other characteristics of this tumor are a multilocular or cellular appearance in X-ray images, invading cells at the border of the tumor, and the presence of cylinder cells in the external region of the tumor nests [3] [4].…”

Section: Introductionmentioning

confidence: 99%

Soft Tissue Recurrence with a Mucocele of an Intraosseous Ameloblastoma

Yamamoto¹,

Murakami²,

Kawai³

et al. 2017

OJST

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Ameloblastoma is an odontogenic tumor of high frequency and usually occurs as an intraosseous growth. Ameloblastomas frequently recur, sometimes undergoing malignant transformation. These tumors are usually characterized as being multilocular, of the follicular type histopathologically, and invading strongly at the border region of the tumor. More than 10% p53-positive tumor cells give a prognostic indication for a tendency to recur. A recurrent ameloblastoma usually occurs in the intraosseous region near the site of the original lesion. In very rare cases, a recurrent tumor proliferates distantly from the original site in the soft tissue only. We report a rare case of recurrent ameloblastoma in the buccal mucosa with a mucocele that originated from the small salivary glands after the extirpation of an intraosseous (mandibular) ameloblastoma. We also performed a p53 immunohistochemical study of this recurrent tumor.

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“…In the past, these lesions have also been described as odontogenic gingival epithelial hamartoma [12]. For peripheral ameloblastoma simple excision will be sufficient treatment [13,14].…”

Section: Introductionmentioning

confidence: 99%

Granular Cell Ameloblastoma: A Case Report and Literature Review

Kattimani

2015

J Dent Probl Solut

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The purpose of this case report is to compare the clinical and histopathologic features of granular cell ameloblastoma with critical review on literature. Data with respect to the histologic types regarding tumor with higher recurrence rates are also investigated. Numerous cases of ameloblastoma have been reported in the literature. However, only a few articles discuss granular cell ameloblastoma and few closely examine their nature and pathogenesis. In this case report, we analyzed the clinical and histopathologic features of granular cell ameloblastoma. a very coarse, granular eosinophilic appearance. Granular cell variety of ameloblastoma appears to be an aggressive lesion with a marked proclivity for recurrence. In addition, several cases of this type have been reported as metastasizing. The lesion have been shown to recur, particularly following inadequate surgical treatment [10]. Case ReportA female patient aged 34 yrs complains of swelling of left side gingiva in the region of canine and premolar since 1 yr. Which was smaller in size and gradually grown to present size, with difficulty in chewing as the growth is interfering in occlusion. On examination the sessile growth originated from left side of gingiva both lingually and buccally in relation to premolars. Which was approximately of 3×4 cm in size and superiorly above the occlusal plane and inferiorly the buccal vestibule. The lesion extends anteriorly from canine and posteriorly till mesial aspect of first molar. It was non tender and no lymphadenopathy felt. After routine blood investigations the patient posted for excisional biopsy. Under general anesthesia peripheral osteotomy performed and specimen sent for histopathology diagnosis.Histopathological report of excisional biopsy taken from right buccal vestibule in relation to 45 & 46 region revealed islands of ameloblastic epithelium in a fibrous connective tissue stroma. The centre of the island shows granular cells with eosinophilic granular cytoplasm and central nucleus. These features are suggestive of granular cell variant of ameloblastoma. DiscussionThe granular cell ameloblastoma is characterized by the presence of large masses of granular cells located within the follicles ( Figure 1). This occurs in 1% -5% of cases [15,16]. The cells are large, round, or polyhedral, and densely packed with eosinophilic granules and frequently demonstrate well-defined borders but, in some instances, form a syncytium. The nuclei are generally pyknotic and eccentrically displaced (Figures 2 and 3). The cells replace all or part of the stellate reticulum and, quite often the peripheral cells as well [15,17]. The granular cells are periodic acid-Schiff-positive and diastase resistant [18]. In our case much similar histopathologic finding of granular cell variant seen clearly.

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Unicystic ameloblastoma. A review of 193 cases from the literature

Cited by 260 publications

References 32 publications

Cone Beam Computed Tomographic findings in Unicystic Ameloblastoma of the mandible.

Cone Beam Computed Tomographic findings in Unicystic Ameloblastoma of the mandible.

Soft Tissue Recurrence with a Mucocele of an Intraosseous Ameloblastoma

Granular Cell Ameloblastoma: A Case Report and Literature Review

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