Odontogenic Myxoma – A Case Report and Clinico-Radiographic Study of Seven Tumors

Abstract

The primary aim of this paper is to present clinical and radiographic aspects of odontogenic myxomas diagnosed at the Stomatology Clinic of Bauru School of Dentistry, University of São Paulo, Brazil and to compare them with data reported in a series published in the literature. A second objective is to report a clinical case of odontogenic myxoma in a 9-year-old patient in whom the lesion involved the anterior region of the maxilla. Dental records between 1975 and 2000 were reviewed and seven cases diagnosed as odontogenic myxoma were found in individuals aged from nine to 60 years. Of these, four occurred in women and three in men. The mandible was affected in five cases and the maxilla in two. All patients presented with asymptomatic swelling in the affected area. A mixed radiographic result was observed in five patients, while in two patients the lesion was completely radiolucent. The borders of the lesion were well-defined in six patients. In four cases there was dental displacement, although root resorption was not observed in any of these. The treatment of choice was surgical excision. Four cases did not recur during the period of follow-up, which varied from nine months to 19 years. It was concluded the clinico-radiographic study of odontogenic myxomas should be continually refined with the aim of offering the patient an appropriate treatment, since the lesion presents a high potential for recurrence. Abstract © Seer Publishing

Mixoma odontogênico em maxila com invasão do seio maxilar

“…In this case, the tumor was located in the left posterior maxilla region, invading the maxillary sinus. As far as the x-ray is concerned, most authors report a multilocular radiolucent image as the most commonly found -as it happened in our case, and in this image we did not see bone perforation and maxillary sinus invasion, which was proven by the CT scan, thus proving its importance for the treatment of the lesion 6 . The treatment performed was tumor resection with healthy tissue margins, which is the one most advocated by the authors, especially in the maxilla and the posterior region, because of the very difficulty in clinically establishing tumor invasion level and complete lesion removal by means of a more conservative technique4.…”

Odontogenic myxoma

“…The typical soft, slippery and gelatinous nature of the specimen on macroscopic examination[613] and the histopathological findings were also in accordance with the literature. [25611] Thus our case was a prototype of an odontogenic myxoma.…”

“…[6] Secondly, it is derived from the mesenchymal portion of the tooth germ i.e., the dental papilla, follicle or periodontal ligament (PDL). [1117]…”

“…[59] Clinically, it is a slow-growing, expansile, painless tumor, which may cause root resorption, tooth mobility, bone expansion, cortical destruction and facial distortion. [511] Radiographically, the classic presentation is that of a multilocular radiolucency, with well-developed locules, consisting of fine trabeculae, arranged at right angles, known as the ‘Tennis-racquet’ or ‘step-ladder’ pattern. A ‘sun-ray’ or ‘sun-burst’ appearance has also been reported in the literature.…”

Myxome Du Maxillaire A Propos D\'un Cas

“…Ces tumeurs dont la pathogénie est encore controversée représentent 0,04 à 0,6 % des tumeurs de la cavité buccale et 3 à 7% des tumeurs odontogéniques [1,2,3]. Les séries rapportées dans la littérature portent sur des cas isolés [1,2,4,5,6,7,8,9,10,11]. Bien que bénignes, ces tumeurs sont localement agressives imposant une prise en charge appropriée.…”