title: Metastatic pulmonary ameloblastoma misdiagnosed as primary squamous cell carcinoma preoperatively.
abstract: Ameloblastomas are rare odontogenic epithelial tumors that occur mainly in the mandible. Despite their benign histologic appearance, they are locally aggressive with a high recurrence rate. However, a metastasizing ameloblastoma has been rarely reported. According to the current World Health Organization classification system, the definitive diagnosis of metastasizing ameloblastoma can only be carried out in retrospect, after the event of metastasis. This case report describes a patient with metastatic pulmonary ameloblastoma, 17 years after the surgical excision of an odontogenic tumor, preoperatively misdiagnosed as primary squamous cell carcinoma.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Korea.
authors.forename: Ju Sik
authors.initials: JS
authors.lastname: Yun
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Korea.
authors.forename: Do Wan
authors.initials: DW
authors.lastname: Kim
authors.affiliation: Department of Pathology, Chonnam National University Hospital, Chonnam National University Medical School, Korea.
authors.forename: Sung Sun
authors.initials: SS
authors.lastname: Kim
authors.affiliation: Department of Pathology, Chonnam National University Hospital, Chonnam National University Medical School, Korea.
authors.forename: Yoo Duk
authors.initials: YD
authors.lastname: Choi
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Korea.
authors.forename: Sang Yun
authors.initials: SY
authors.lastname: Song
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Korea.
authors.forename: Kook Joo
authors.initials: KJ
authors.lastname: Na
keywords: Ameloblastoma; Lung neoplasms; Neoplasm metastasis