Keratocystic Odontogenic Tumor with ameloblastomatic changes mimicking dentigerous cyst : An unusual case report

Manjula Marandi; Sonal Saigal; Narendra Nath Singh

doi:10.21276/ujds.2020.6.2.7

Manjula Marandi Clinical Tutor, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi
Sonal Saigal Lecturer, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi
Narendra Nath Singh Professor and Head of Department, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

DOI: https://doi.org/10.21276/ujds.2020.6.2.7

Abstract

The OdontogenicKeratocystic (OKC) is a developmental cyst derived from the remanants (rest) of the dental lamina with a peculiar biological behavior. Many attempts have been made to classify these cysts from 1887 to WHO 2017 head and neck tumors. Initially classified under developmental odontogenic cyst of jaw by WHO in 1971 and 1992, OKC has then been reclassified and renamed as KeratocysticOdontogenic Tumor (KCOT) in the WHO classifications of head and neck tumors in 2005 due to its aggressive behavior, high recurrence rates and specific histopathological feature. But recently WHO 2017 classification of head and neck tumors reclassified KCOT as a cyst. Despite of so many classification and nomenclature, unfortunately the controversy still exists. KCOT has been rarely reported to transform into a more aggressive lesion like ameloblastoma. We here present a case report of KCOT involving the body and ramus of the mandible having histopathological features suggestive of ameloblastomatic changes and mimicking dentigerous cyst.

Author Biographies

Manjula Marandi, Clinical Tutor, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

Clinical Tutor, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

Sonal Saigal, Lecturer, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

Lecturer, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

Narendra Nath Singh, Professor and Head of Department, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi

Professor and Head of Department, Department of Oral Pathology, Microbiology and Forensic Odontology, Dental Institute, RIMS, Ranchi