title: Conservative approach to recurrent calcifying cystic odontogenic tumor occupying the maxillary sinus: a case report.
abstract: Calcifying cystic odontogenic tumor (CCOT) is an uncommon benign cystic neoplasm of the jaw that develops from the odontogenic epithelium. Invasion into the maxillary sinus by a CCOT is not a typical, and the recurrence of the cystic variant of CCOT in the posterior maxilla is rare. This report describes a recurrent CCOT occupying most of the maxillary sinus of a 24-year-old male patient. As a treatment, marsupialization was carried out as a means of decompression, and the involved teeth were all endodontically treated. Afterward, surgical enucleation was performed. The size of the lesion continued to shrink after marsupialization, and the maxillary sinus restored its volume. This patient has been followed-up for 3 years after the surgery, and there have not been any signs of recurrence.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonbuk National University, Jeonju, Korea.; Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.
authors.forename: Yongsoo
authors.identifier: 0000-0003-3016-5802
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonbuk National University, Jeonju, Korea.; Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.
authors.forename: Bo Eun
authors.identifier: 0000-0002-7269-5265
authors.initials: BE
authors.lastname: Choi
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonbuk National University, Jeonju, Korea.; Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.
authors.forename: Seung-O
authors.identifier: 0000-0001-7504-7557
authors.initials: SO
authors.lastname: Ko
keywords: Calcifying cystic odontogenic tumor; Calcifying odontogenic cyst; Marsupialization