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Martinelli-Kläy CP, Chatelain S, Salvado F, et al. Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis. Case Rep Pathol. 2017;2017:6249649doi: 10.1155/2017/6249649.
Martinelli-Kläy, C. P., Chatelain, S., Salvado, F., & Lombardi, T. (2017). Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis. Case reports in pathology, 20176249649. https://doi.org/10.1155/2017/6249649
Martinelli-Kläy, C P, et al. "Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis." Case reports in pathology vol. 2017 (2017): 6249649. doi: https://doi.org/10.1155/2017/6249649
Martinelli-Kläy CP, Chatelain S, Salvado F, Lombardi T. Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis. Case Rep Pathol. 2017;2017:6249649. doi: 10.1155/2017/6249649. Epub 2017 Sep 28. PMID: 29093979; PMCID: PMC5637856.
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Case Rep Pathol. 2017;2017:6249649. doi: 10.1155/2017/6249649. Epub 2017 Sep 28.

Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis.

Case reports in pathology

C P Martinelli-Kläy, S Chatelain, F Salvado, T Lombardi

Affiliations

  1. Laboratory of Oral & Maxillofacial Pathology, Oral and Maxillofacial Pathology Unit, Division of Oral Maxillofacial Surgery, Department of Surgery, University Hospitals of Geneva, University of Geneva, Geneva, Switzerland.
  2. Center for Interdisciplinary Research Egas Moniz (CiiEM), Health Sciences Institute, Monte da Caparica, Portugal.

PMID: 29093979 PMCID: PMC5637856 DOI: 10.1155/2017/6249649

Abstract

Maxillary cysts, including the cysts lined by respiratory epithelium, can present a diagnostic challenge. We report an unusual case of a maxillary cyst on an endodontically treated tooth #16, in which the cavity was totally lined by a respiratory epithelium. The patient, a 35-year-old male, presented with a generalized chronic periodontitis and complained of a pain in the tooth #16 region. A periodontal pocket extending to the root apices with pus coming out from the gingival was found. A combined endodontic periodontal was observed on a panoramic radiography. CBCT-scan revealed a well-circumscribed radiolucent lesion at the apices of the distobuccal root of the 16. A communication with the right maxillary sinus cavity and a maxillary and ethmoidal sinusitis were also observed. The lesion was removed and histological examination revealed a cyst lined exclusively by respiratory epithelium. Ciliated and rare mucous cells were also observed. The diagnosis could evoke a surgical ciliated cyst mimicking the radicular cyst but the patient has no previous history of trauma or surgery in the maxillofacial region. It could also be an unusual radicular cyst in which the stratified squamous epithelium was destroyed by inflammation and replaced by a respiratory epithelium of the maxillary sinus.

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