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Case Reports
. 2019 Feb;23(Suppl 1):74-77.
doi: 10.4103/jomfp.JOMFP_319_18.

Odontogenic keratocyst arising in the maxillary sinus: A rare case report

H S Sheethal  1 , Kavita Rao  1 , Umadevi H S  1 , Keerti Chauhan  1
Affiliations
Case Reports

Odontogenic keratocyst arising in the maxillary sinus: A rare case report

H S Sheethal et al. J Oral Maxillofac Pathol. 2019 Feb.

Abstract

Odontogenic keratocyst is an aggressive cystic lesion and a common type of tooth derived cyst due to presence of odontogenic epithelial remnants in different regions of jaw. In majority of cases, it is located in mandibular posterior region. But it can also be found in the maxilla especially in the canine region. We present a rare case of OKC in maxillary sinus which associated with ectopic third molar. Also, it can be easily confused with other lesions of maxillary sinus like sinusitis or antral polyps, which usually resemble symptomatically. There can be malignant transformation of this benign condition towards squamous cell carcinoma or ameloblastoma. So an early and accurate diagnosis of odontogenic keratocyst is a challenge for pathologists.

Keywords: Ectopic tooth; maxillary sinus; odontogenic keratocyst.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Orthopantomogram showing ectopically placed 28 in the lateral wall of the maxillary sinus
Figure 2
Figure 2
Cone-beam computed tomography showing obliteration of the maxillary sinus with impacted 28 in maxillary sinus
Figure 3
Figure 3
Fine-needle aspiration cytology shows the presence of cholesterol crystals, superficial and desquamated epithelial cells, inflammatory cells and bacterial colonies
Figure 4
Figure 4
Connective tissue lined by a thin corrugated parakeratinized stratified squamous epithelium without rete ridges. Basal layer composed of hyperchromatic columnar cells with palisading arrangement
Figure 5
Figure 5
Focal areas of pseudostratified ciliated columnar epithelium characteristic of the maxillary sinus
See this image and copyright information in PMC

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