Maxillary plexiform ameloblastoma showing basaloid differentiation: Report of a rare case with review of literature.

Ameloblastoma is a benign, locally aggressive tumor originating from the odontogenic epithelium. It manifests as a slow growing swelling, causing expansion of the jaw bones. Radiologically, it presents as a unilocular or multilocular radiolucency exhibiting a characteristic soap bubble or honeycomb appearance. Ameloblastoma exhibits several histologic patterns of which basal cell variant is a rare entity. The present case report is that of a maxillary ameloblastoma exhibiting a basaloid differentiation that may put one in the mind of a basaloid squamous cell carcinoma or a basal cell carcinoma. Confirmation of such rare variants should be done not only based on histopathology but with the help of supplemental immunohistochemical analysis. The present case report helps in exposing a rare variant of ameloblastoma and emphasizes the role of advanced diagnostic aids such as immunohistochemistry in establishing the diagnosis.

Treating large inferior maxillary ameloblastoma by one resection and one-episode transplantation with microsurgical technique

5 patients with large inferior maxillary ameloblastoma treated at the Hospital 108 were with good outcomes. The technique involves 3 steps: Step 1: Preoperative evaluation and preparation. Step 2: The operation was conducted by 2 shifts of surgeons. The first shift takes off the autologous iliac crest flap. The second shift removes the section of maxillary bone that contained tumor and prepares the blood supply vessel. Then the flap was inserted into the inferior maxillary area, controlled and stabilized for 2 ends. Step 3: Post-operative following, in which it is important to follow the circulation of vascular anastomosis, the situation of skin with bone flap and ultrasonographic imaging.

A Case of Ameloblastoma in the Maxilla / 대한이비인후과학회지

Ameloblastoma occurs most commonly at the jaw and accounts for 1% of all tumors of jaw. There have been much arguments about ameloblastoma in name, development, classification and treatment. According to the histologic classification of tumors announced by WHO, ameloblastoma had been classified as benign and malignant. And now it is classified as unicystic, multicystic and peripheral ameloblastoma. It has both benign and partially invasive, malignant character. It occurs commonly at the mandible and rarely at the maxilla. According to statistics, it occurs at the mandible 80-95% and at the maxilla 5-20%. We have experienced a case of ameloblastoma occurring in the maxilla, and treated with infrastructure maxillectomy. The histopathologic diagnosis was a acanthomatous ameloblastoma. So, we present this case with a review of literature.

A Case of Ameloblastoma of Maxilla / 대한이비인후과학회지

Ameloblastoma is a histologically benign tumour originating from epithelial components of the embryonic tooth, arrested developmentally prior to enamel formation. Clinically this tumour is locally invasive, potentially lethal and occasionally shows malignant features with systemic metastases. The maxilla is by far less frequently affected than the mandible. We have experienced a case of multicystic ameloblastoma originating from right maxilla. The patient was 39-year-old male who complained pain and numbness on right cheek. The patient was treated with subtotal maxillectomy by midfacial degloving approach. The final histopathologic diagnosis was a acanthomatous ameloblastoma.