Archives of Dental Research 2022;12(1):51–54 Content available at: https://www.ipinnovative.com/open-access-journals Archives of Dental Research Journal homepage: https://www.adr.org.in/ Case Report Odontogenic keratocyst mimicking dentigerous cyst: A case report Surendra Daware 1 , Ashish Lanjekar 2, *, Vivek Kolhe 3 , Charulata Daware 4 1 Government Dental College and Hospital, Nagpur, Maharashtra, India 2 Swargiya Dadasaheb Kalmegh Smruti Dental College and Hospital, Nagpur, Maharashtra, India 3 V.Y.W.S. Dental College & Hospital, Amravati, Maharashtra, India 4 Dental Surgeon, Nagpur, Maharashtra, India ARTICLE INFO Article history: Received 25-06-2022 Accepted 09-07-2022 Available online 28-07-2022 Keywords: Odontogenic Keratocyst Dentigerous Cyst Ameloblastoma Keratocystic odontogenic tumor ABSTRACT Impacted mandibular third molars are commonly associated with pericoronal radiolucencies. Dentigerous cysts is the most common developmental cyst of the jaw. Ameloblastoma, Dentigerous cyst and Odontogenic keratocyst have similar clinical and radiographic features but they differ in histopathological features and treatment modalities. This article presents the case of a 35year old male patient with complaint of mild pain and swelling, posteriorly in mandibular right quadrant. On clinical and radiographic examination the diagnosis was Dentigerous cyst but on aspiration cytology it was suggestive of Odontogenic keratocyst. Pericoronal radiolucencies are relatively common in most cases related to impacted mandibular third molars therefore it should be carefully evaluated with respect to clinical, radiographic and histopathological aspects. This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms. For reprints contact: reprint@ipinnovative.com 1. Introduction Pericoronal radiolucencies are common radiographic signs in relation to impacted mandibular third molars. In most cases, they are associated to Dentigerous cysts since it’s the most common developmental cyst of the jaw region. 1 Pericoronal radiolucencies associated with the impacted mandibular third molars may have identical clinical and radiographic features, although they have different histopathological aspects, biological behavior, and management. This is true for dentigerous cyst, ameloblastoma and odontogenic keratocyst. The differential diagnosis may be explored by careful examination of the clinical and radiological findings. A radiolucent lesion, located in the mandibular posterior area, can be more or less aggressive in nature. Differential * Corresponding author. E-mail address: ashishlanjekar@sdk-dentalcollege.edu.in (A. Lanjekar). diagnosis must therefore be executed in order to accurately identify the lesion. 2 We report a case of a 35-year-old male patient presenting with a mild pain and swelling in the mandibular posterior right side region. 2. Case Report A 35-year-old male patient was reported with mild pain and swelling in the mandibular posterior right side since 3 months duration. The medical history was not significant. The Extra-oral evaluation showed mild swelling in relation to mandibular posterior right side region. The intra-oral examination revealed the absence of the tooth 48 region. It did not show clinical signs of inflammation such as swelling or pain and the mucosa around the tooth site was clinically normal. An IOPA revealed a well-defined radiolucent area associated with the right third molar (Figure 1), Panoramic https://doi.org/10.18231/j.adr.2022.010 2277-3401/© 2022 Innovative Publication, All rights reserved. 51