Simultaneous occurrence of keratocystic odontogenic tumor and ameloblastoma in the mandible: A case report

Gamoh,Shoko; Akiyama,Hironori; Tominaga,Kazuya; Nakajima,Masahiro; Kakudo,Kenji; Tanaka,Akio; Shimizutani,Kimishige

doi:10.3892/ol.2015.3323

Simultaneous occurrence of keratocystic odontogenic tumor and ameloblastoma in the mandible: A case report

Authors:
- Shoko Gamoh
- Hironori Akiyama
- Kazuya Tominaga
- Masahiro Nakajima
- Kenji Kakudo
- Akio Tanaka
- Kimishige Shimizutani
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Affiliations: Department of Oral Radiology, Osaka Dental University, Osaka 540‑0008, Japan, Department of Oral Pathology, Osaka Dental University, Osaka 540‑0008, Japan, Department of Dentistry for Disability and Oral Health, Osaka Dental University, Osaka 540‑0008, Japan, Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka 540‑0008, Japan
Published online on: June 4, 2015 https://doi.org/10.3892/ol.2015.3323
Pages: 785-789
Copyright: © Gamoh et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Keratocystic odontogenic tumors (KCOTs) and ameloblastomas are benign odontogenic tumors that primarily occur in the molar region of the mandible. However, it is uncommon for these tumors to arise simultaneously in a patient's jaw. The present study reported the diagnostic process and features of a rare case of the simultaneous occurrence of KCOT and ameloblastoma in the mandible of a 45‑year‑old male. Image‑based diagnosis was challenging due to several conditions, including the intactness of the teeth and bone cortex as well as the sizes and locations of the lesions. Based on radiographic evidence, the patient was initially misdiagnosed and underwent a biopsy for a radicular cyst and a simple bone cyst prior to the correct diagnoses of KCOT and ameloblastoma, respectively. In addition, the present study discussed the diagnostic process of the present case and reviewed previous literature regarding the simultaneous occurrence of benign tumors of the jaw.

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