Multiple Recurrence Of Acinic Cell Carcinoma Of The Maxillary Sinus Misdiagnosed As An Adenomatoid Odontogenic Tumor

ABSTRACT

male appealed severe palatal and buccal swelling in the Lt.maxilla in 1990. In 1986, the patient was already carried out the clinical and radiological examination in our hospital. Multiple radiolucency was seen from #21 to #25 periapical area and Lt.maxillary sinus in the panoramic view at this time. But,the patient came home without special examination or inspection for itself. January 1990, the mass took an impression to grow bigger and the patient had visited again. Partial maxillectomy was carried out at this time and pathologic diagnosis was an adenomatoid odontogenic tumor.After 3 years, lesion was recurred and carried out hemimaxillectomy with Weber-Furgusson incision.September 2001,facial swelling was recurred again and patient was suffered from nasal breathing,lacrimal obstruction and exopthalmus. In this case, the tumor cells composed of nodular and papaillary cystic pattern with microcyst formation, highly suggestive of an adenomatoid odontogenic tumor. Histopathologically, the recurrent tumor was proved to be the same pattern of the primary tumor, which is compatible with acinic cell carcinoma. However, adenomatoid odontogenic tumor did not appear destructive multilocular radiolucency.In addition, this tumor had frequently observed amyloid-like or calcified materials in biopsy specimen. Therefore, oral pathologists had kept in mind into the correlative analysis of histopathologic and oral radiographic features, which is essential for definitive diagnosis.