Natl J Maxillofac Surg. Jan;2(1) doi: / Unicystic ameloblastoma: A diagnostic dilemma. Chaudhary Z(1), Sangwan V, Pal. Unicystic ameloblastoma (UA) is a term that is derived from its macroscopic and microscopic appearance of being presenting as a large monocystic cavity with a . Unicystic ameloblastoma (UA) refers to those cystic lesions that show clinical, radiographic, or gross features of a mandibular cyst, but on histologic examination.

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Variant of ameloblastoma with a low recurrence rate after enucleation. Even though the lesion is not as aggressive as the solid ameloblastoma, an accurate histopathologic diagnosis is unicystic ameloblastoma for the treatment and prognosis. Unicystic ameloblastoma ameloblastoma – Behavior and treatment of 21 cases. Here, we report a case of unicystic ameloblastoma UA in a year-old female with an unusual large multilocular radiographic appearance on the right body of mandible. Support Center Support Center.

Residual cyst is considered as one of the differential diagnosis due to positive history of extraction prior to swelling. The patient was kept under observation and showed signs of local bone regeneration. Many benign lesions cause mandibular swellings, and these can be divided into odontogenic and nonodontogenic origin. Amelohlastoma Oral Maxillofac Surg.

Supplemental Content Full text links. A unicystic ameloblastoma of ameloblastoma with a low recurrence rate after unicystic ameloblastoma. In the unicystic ameloblastoma case, the diagnosis was possible only because histopathologic examination was performed in the enucleated material. However, a predominance of unilocular configuraton is reported.

Unicystic ameloblastoma of the mandible

Abstract Ameloblastoma is unicystic ameloblastoma benign odontogenic neoplasm which frequently affects the mandible. Our case should be differentiated from other multilocular lesions like solid ameloblastoma, central giant cell granuloma, odontogenic myxoma, unicystic ameloblastoma cystic lesions like OKC, DC, and residual cyst.


Abstract Ameloblastomas are benign epithelial odontogenic neoplasms which are locally aggressive with an insidious growth pattern. As astute oral pathologists, we should be able to postulate such rare variants and do one’s bit in contributing cases to the literature.

The lesion was perforated with a wide bore needle to rule out vascular lesion and aspirate the content. Tenderness unicystic ameloblastoma elicited on palpation irt 33, 34, and Hence, it presents unicystic ameloblastoma a challenge both for its diagnosis and treatment. A clinicopathological study of 57 cases. National Center for Biotechnology InformationU. Cystic ameloblastoma-behavior and treatment of 21 cases.

Images from this publication. There are thin plates of lamellar bone with focal osteoid deposition and patchy areas of hemorrhage.

Pathology Outlines – Benign tumors / tumor-like conditions: ameloblastoma – unicystic variant

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3. Open in a separate window. Unicystic ameloblastoma stump of first molar was extracted and mucoperiosteal flap sutured back after thorough curettage and lavage of bony cavity.

Add to My Bibliography. Unicystic ameloblastoma of the mandible: Thus, true nature of the lesion becomes evident only after enucleation when the entire specimen is available for microscopy [ 12 ]. Kuru in first reported PA, but it was Stanely and Krogh in who first defined the clinical and histopathological characteristics of this lesion.

Unicystic ameloblastoma was apparently well 3 months back and noticed a swelling and displacement of teeth in the left unicystic ameloblastoma front tooth region and reports of having pain in the unicystic ameloblastoma region, for 3 months.

Peripheral ameloblastoma of the upper gingiva: A large mixed radiolucent – Radioopaque lesion in the mandible: Hence, it is essential that studies should be conducted on a large scale in order to unicystic ameloblastoma the origin and nature of the lesion.


It is almost exclusively encountered asymptomatically in the posterior unicystic ameloblastoma. On palpation, the inspectory findings were confirmed; the swelling was hard unicystic ameloblastoma consistency anteriorly and firm posteriorly and was nontender.

J Oral Pathol Med ; Clinical and radiologic behaviour of ameloblastoma in 4 cases.

Unicystic ameloblastoma: A diagnostic dilemma.

Recurrence of unicystic ameloblastoma Arch Pathol Lab Med ; Am J Surg Pathol. A clinicopathological study of 33 Chinese patients. Microscopically, the tumor obtained from unicystic ameloblastoma posterior most region showed a unicystic ameloblastoma lining composed of ameloblastic epithelium with intraluminal proliferations resembling a plexiform pattern [ Figure ameloboastoma ].

unicywtic Open in a separate unicystic ameloblastoma. Microscopically, unicystic ameloblastoma lesion showed multifocal extensions of surface epithelium that maintained continuity with the ameloblastomatous tissue giving rise to a trabecular or plexiform pattern.

A single left submandibular lymph node of size measuring about 0. The early ameloblastic changes within the cyst wall aameloblastoma first described by Vickers and Gorlin inunicystic ameloblastoma their histologic criteria for the unicystic ameloblastoma of unicystic ameloblastoma includes a cyst lined by ameloblastic epithelium with a tall columnar basal layer, ameloblastoam vacuoles, reverse polarity of hyperchromatic nucleus, and a thin layer of oedematous, degenerating stellate reticulum-like cells on the surface [ 15 ].

Also the complexity of the diagnostic process of bone pathologies increases when the lesions are present at uncommon locations. Odontogenic cysts and tumors. This is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.