Unicystic ameloblastoma (UA) refers to those cystic lesions that show clinical, radiographic, or gross features of a mandibular cyst, but on histologic examination. A clinicopathological study of 57 unicystic ameloblastomas has been undertaken, which represents 15% of all cases of ameloblastoma accessioned in our. 21 Jun Mandible / maxilla – Benign tumors / tumor-like conditions: ameloblastoma – unicystic variant.

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This paper illustrates a case of unicystic mural ameloblastoma of the mandible in an year-old female.

The unicystic ameloblastoma: a clinicopathological study of 57 cases. – PubMed – NCBI

Treatment Right hemimandibulectomy and microvascular reconstruction with free fibular flap was done. The internal aspect of the lesion is multilocular with large size locules. They contain moderate to abundant pale acidophilic vacuolated cytoplasm and round to oval vesicular nucleus.

Thirdly, there was no root resorption of any tooth which may indicate the aggressive nature of the lesion. Our case study had a peculiar radiographic presentation of multilocular radiolucency crossing the midline of the mandible.

However, few are not associated with impacted teeth ameloblzstoma are called nondentigerous variant [ 12 ]. Int J Dent Case Reports. Late recurrence following surgical management is relatively common and is related to the histological type, the site of origin, and the initial treatment modality. Differential diagnosis, multilocular appearance, tennis racket appearance, unicystic ameloblastoma. Till now no recurrence has been seen and patient is still regularly being followed up.

Related articles Unicystic ameloblastoma intraluminal mural plexiform. Several attempts have been made in the past to distinguish the lining of the UCAs from that of odontogenic cysts. Segmental mandibulectomy unicyatic immediate free fibula osteoseptocutaneous flap reconstruction with endosteal implants: Clinicopathological features of unicystic ameloblastoma with special reference to its recurrence.


Accessed November 9th, Clinicopathological features of unicystic ameloblastoma with special reference to its recurrence. A clinicopathological study of 33 Chinese patients. Lau SL, Samman N. The cortices of mandibular canal also are intact.

The unicystic ameloblastoma: a clinicopathological study of 57 cases.

Zainab ChaudharyVandana SangwanU. In the present case, histopathologic examination of the enucleated ameloblaxtoma showed ameloblastic changes unixystic to luminal surface of the cyst, i. Most of the UCAs are associated with an impacted tooth, the mandibular third molar being involved most often. Unicystic variant of ameloblastoma with aggressive histologic behaviour also might be successfully treated with marsupialisation with subsequent enucleation, and this approach can be considered as an alternative to resection.

The ability to predict this potential occurrence prior to surgery would greatly enhance therapeutic strategies for reducing the incidence. J Oral Maxillofac Surg ; Unicystic ameloblastoma, a variant of ameloblastoma, was first described by Ackermann et al. Expansile lesion, often unicystic or unilocular radiographically Variable association with impacted tooth Often displaces teeth, but may also resorb teeth.

Louis, Mo, USA, 2nd edition, Mucosal ulceration is rare but may be caused by continued growth of the tumor [ 12 ]. Natl J Maxillofac Surg. The most common tumor of odontogenic origin is ameloblastoma which develops from epithelial cellular elements and amdloblastoma tissues in their various phases of development.

The most common tumor of odontogenic origin is ameloblastoma which develops from epithelial cellular elements and dental tissues in various phases of development. How to cite this URL: Case Reports in Dentistry. Robinson L, Martinez MG.

The UA diagnosed as subgroups 1 and 1. Microscopically hematoxylin and eosin stained sections revealed the presence of odontogenic epithelium lining cyst lumen of variable thickness ranging from few layers to multiple cell layers [ Figure 7 ] showing typical cytomorphologic features knicystic ameloblastoma given by Vickers and Gorlin, including as basal cell layer composed of columnar cells displaying hyperchromatism, palisaded nuclei, with reverse polarity and subnuclear vacuole.


A clinicopathological study of 57 cases. Intraoral examination revealed very slight diffuse swelling in the posterior region of right mandible showing no facial asymmetry.

It was nonfluctuant and nonreducible and no discharge was noticed, ameloblaastoma were pulsations felt Figure 2. Case Report A year-old female patient presented with a chief complaint of swelling in amleoblastoma right lower jaw back region unicystc months.

Mandibular occlusal view reveals impacted 33 and expansion of lingual aneloblastoma plates irt 32, 33, 34, 35, and 36 and mild expansion of buccal cortical plate Figure 3.

Unicystic tumors include those that have been variously referred to as mural ameloblastomas, luminal ameloblastomas, and ameloblastomas arising in dentigerous cysts DCs. Patient gave history of extraction of right mandibular second and third molars 2 years before the swelling appeared.

However, histopathologic examination revealed UA. Incisional biopsy was advised and specimen submitted for histopathological examination. Residual cyst is considered as one of the differential diagnosis due to positive history of extraction prior to swelling. Unicystic ameloblastoma of the maxilla: The histopathologic examination of the removed lining revealed UA contrary to the provisional diagnosis of radicular cyst [ Figure 3 ].

Intraoral examination revealed a painless swelling in the right posterior mandibular vestibule from right mandibular second premolar to the distal aspect of second molar on the same side. As preoperative incisional biopsy is not representative of the entire lesion, it may result in an incorrect classification.

A case report and review of unicstic literature. This swelling is the result of an expansion of the cortical plates of the jaw and can be identified by palpation as hard and bony.

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