Ameloblastic carcinoma is a rare form of odontogenic tumor, one that develops in the jawbones from the epithelial cells that generate the tooth enamel. Mandible / maxilla – Malignant tumors: ameloblastic carcinoma. Ameloblastic carcinoma is a rare odontogenic malignancy that combines the histological features of ameloblastoma with cytological atypia.

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Histologically, there are features of both ameloblastoma and carcinoma. When a case is diagnosed as ameloblastic carcinoma, assessment of nodal metastasis and evidence amelobladtic distant metastasis should be evaluated. Clinically, these carcinomas are more aggressive than typical ameloblastomas.

Introduction Ameloblastic carcinoma is a relatively rare type of tumor. A clinicopathologic dilemma – Report of two cases with total review of literature from to Indu Bhusan Kar 1R. Ameloblastoma is a benign but locally aggressive neoplasm, which presents as ameloblasitc slowly growing painless swelling of the jaws.

Pathology Outlines – Malignant tumors: ameloblastic carcinoma

This article has been cited by other articles in PMC. Support Center Support Center. The peripheral type of ameloblastic carcinoma, arising within a pre-existing benign peripheral ameloblastoma, was relatively rare. In the differential diagnosis, the designation of malignant ameloblastoma is reserved for lesions that, despite their benign histology, metastasize as well-differentiated cells.

Ameloblastic carcinoma is a rare form of odontogenic tumorone that develops in the jawbones from the epithelial cells that generate the tooth enamel. Some current concepts on the pathology of ameloblastomas. Dissemination may result from increased malignant behaviour, stimulated by multiple recurrences or that the repeated surgical procedures required for the treatment of these recurrences, causes implantation of tumor cells into blood vessels or lymphatic channels.

Am J Clin Pathol. ACs can recur locally 0.

Rare Disease Database

Recent reports also mention the benefits of radiotherapy after initial surgical intervention, especially with the use of megavoltage therapy. Both aetiology of this rare carcinoma and the question whether this type of carcinoma originates from an ameloblastomas or represents a separate entity are still controversial [ 13 ].


Case report and review of the literature. The two such forms include malignant ameloblastoma, and ameloblastic carcinoma. It is generally acknowledged that ameloblastic carcinoma is considered to be a radioresistant tumor.

None of our patients were sent for radiotherapy or chemotherapy. Oral Oncology39 7 Ameloblastic carcinoma of the jaws.

Maxillary ameloblastic carcinoma in a child. Akrish et al 18 retrospectively analyzed 37 patients with ameloblastic carcinoma, which were reported between and Most cases are found incidentally. Ameloblastic carcinoma containing melanocyte and melanin pigment in the mandible: He also concluded that primary radiation should be considered whenever a full-surgical excision was technically difficult because of local invasion or inappropriate because of medical factors.

Jeremic et al 12 proposed the use of parotid gland resection and regional lymph node dissection to achieve adequate margins.

The most common course of the disease is persistent recurrence with local spread. Pulmonary metastasis from ameloblastoma of the mandible treated with cisplatin, adriamycin and cyclophosphamide. Focal areas of keratinization were also evident. Ameloblastoma in Nigerian children and adolescents: In the present study, the cure rate of the primary tumors was higher than that observed in the literature vs.

Jeremic et al [ 12 ]. Although we could not ascertain unequivocally whether ameloblastic carcinoma in our patient developed de novo or from a pre-existing ameloblastoma, we believe the former might be the most likely due to the absence of any history of previously operated tumour from the site and the short duration of the lesion.

J Pharm Bioallied Sci. A total of 10 patients exhibited maxillary tumors and 10 had mandibular tumors. Related Disorders Symptoms of the following disorders can be similar to those of ameloblastic carcinoma.


J Oral Med ; Oral and Maxillofacial Pathology, 3rd Edition, Furthermore, the combination of chemotherapy and radiotherapy to treat patients with secondary tumors requires further evaluation. Central stellate reticulum appears to be condensed and hypercellular presenting a less orderly fashion. An extended jaw resection was performed if the X-ray and CT scan demonstrated destruction of the cortical bone, involvement of the periosteum, or invasion of soft tissue.

This article has been cited by other articles in PMC. Ameloblastic carcinoma [title] mandible maxilla. More than cases of ameloblastomas have been described in the literature, [ 12 ] but less than 60 cases of ameloblastic carcinoma have been reported so for, among which two thirds occurred in the mandible [ 13 ].

Angiero et al 5 reported that ameloblastic carcinoma possess unique histopathological features. A total number of 92 case reports speak about its rare incidence, affecting mostly the mandible as a locally destructive lesion.

Carcionma J Oral Maxillofac Surg. Therefore, these results support the use of extended jaw resection to prevent local recurrence. During this period, the odontogenic epithelium may be trapped in the sinonasal mucosa, or the sinonasal cells may acquire the capability of odontogenesis [ 16 ]. A total of 17 patients had primary tumors and three exhibited secondary tumors.

Ameloblastic carcinoma: A case series

In individuals with cancer, malignancies may develop due to abnormal changes in the structure and orientation of certain cells known as oncogenes or tumor suppressor genes.

Ameloblastoma of the maxilla with distant metastases and hypercalcemia.

The clinical symptoms of ameloblastic carcinoma are more aggressive than conventional ameloblastoma, with swelling, pain, rapid growth, trismus, dysphonia, expansion of the jaws, and frequently perforation of the cortex. Rare localization of a rare neoplasm.