Abstract

The residual cyst is the result of Malassez's epithelial rests stimulation due to an inflammatory process of pulp necrosis of a tooth already removed. The aim of this work is to report an extensive residual cyst enucleation in the mandible. A 62-year-old female patient presented with pain in the right side of the mandible. Extraoral examination showed a growth caused by the extensive bulging of the buccal cortex in the edentulous region corresponding from the canine to the right molars area. The image obtained by concomitant computed tomography showed unilocular, hypodense, and well-defined limits, with expansion and thinning of the buccal bone plate of the corresponding region. An aspiration was performed followed by incisional biopsy, whose histopathologically analyzed tissue corresponded to the conclusive diagnosis of residual cyst. After 8 months of enucleation, no signs of relapse were observed, and the prognosis is good. The residual cyst is the result of Malassez's epithelial rests stimulation due to an inflammatory process of pulp necrosis of a tooth already removed. The aim of this work is to report an extensive residual cyst enucleation in the mandible. A 62-year-old female patient presented with pain in the right side of the mandible. Extraoral examination showed a growth caused by the extensive bulging of the buccal cortex in the edentulous region corresponding from the canine to the right molars area. The image obtained by concomitant computed tomography showed unilocular, hypodense, and well-defined limits, with expansion and thinning of the buccal bone plate of the corresponding region. An aspiration was performed followed by incisional biopsy, whose histopathologically analyzed tissue corresponded to the conclusive diagnosis of residual cyst. After 8 months of enucleation, no signs of relapse were observed, and the prognosis is good.

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