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Pulmonary Metastasizing Ameloblastoma 22 Years After Initial Diagnosis: A Case Report
Seok Kim1, Chagn Wan Kim
2;
1Kwangju Christian Hospital, Gwangju, Korea, Republic of,
2Wonju Severance Christian Hospital, Gangwon-do, Korea, Republic of
BACKGROUND: Ameloblastoma is a slow-growing odontogenic tumor that rarely metastasizes. Herein, we described the case of a patient with a slowly progressing ameloblastoma of the maxilla diagnosed 22 years ago, for which she underwent a surgery.
METHODS: A 65-year-old woman was hospitalized due to abnormal findings on her chest radiograph. A chest computed tomography scan revealed masses in the right lower lobe (RLL) and right middle lobe (RML) measuring 4.5 cm and 1.4 cm in diameter, respectively. In 2000, she was diagnosed with ameloblastoma of the maxilla at the age of 43. Amelobastoma was confirmed through ultrasound and fluoroscopy-guided percutaneous needle biopsy.
RESULTS: Video-assisted thoracoscopic surgery involving wedge resection of RLL and RML, along with mediastinal lymph node sampling, was performed. The patient was treated with adjuvant chemotherapy, and no recurrence was observed at the 1-year follow up.
CONCLUSIONS: We performed a successful surgical treatment of a rare case of pulmonary metastases ameloblastoma. Despite the considerable amount of time that has passed, we firmly believe that listening to the patient's medical history remains valuable for ensuring an accurate diagnosis.Fig.1 Anastomosing epithelial strands show peripheral palisading(arrows) with more loosely arranged angular cells(arrowheads) and variable keratinization(asterisks) (hematoxylin-eosin stain, original magnification X100).
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