Giant pindborg tumor (calcifying epithelial odontogenic tumor): an unusual case report with radiologic-pathologic correlation

Radiologic-Pathologic correlation of Pindborg tumor of maxilla with extension to maxillary sinus, nasal cavity, and infraorbital margin: A case report

Calcifying epithelial odontogenic tumor is a benign epithelial odontogenic tumor thought to originate from the stratum intermedium. Clear cell type, Langerhans cell/non-calcified type, and cystic/microcystic are the three recently recognized histological subtypes of CEOT in the 5th edition of the World Health Organization Classification of Head and Neck Tumors. Almost 350-400 cases of CEOT have been reported in literature, accounting for less than 1% of the reported cases of odontogenic tumors. We are reporting a case of Pindborg tumor of the maxilla with extension to the maxillary sinus, nasal cavity, and infraorbital margin, with an emphasis on radiographic and histopathologic presentation.

Large cemento-ossifying fibroma of the mandible involving the infratemporal and parapharyngeal spaces

Cemento-ossifying fibroma is a benign fibro-osseous lesion of the jaws. Cemento-ossifying fibroma develops from the periodontal ligament and contains multipotent stem cells that can form cementum, lamellar bone, and/or fibrous tissue. These tumours occur in the third and fourth decades of life with higher predilection of occurrence in the female population and seldom attain a large size. We report a rare case of cemento-ossifying fibroma in a 45-year-old man involving the body of the mandible and extending into the para-pharyngeal and infratemporal region. This article describes the clinical, radiographic, and histological features of a large cemento-ossifying fibroma of the mandible.

Surgical management of a large calcifying epithelial odontogenic tumor in the maxilla: A case report

INTRODUCTION

The calcifying epithelial odontogenic tumor (CEOT), also known as Pindborg tumor, is a locally invasive benign neoplasm. Histogenesis is controversial.

PRESENTATION OF CASE

A 26-year-old male presented asymptomatic swelling on the right side of the face, with approximately six months of evolution. At intraoral examination, a hard nodule localized in the right posterior region of the maxilla, measuring approximately 5.0 x 3.0 cm was observed. The computed tomography images showed hypodense lesion with points of calcification associated with two non-erupted teeth. We suspect of odontogenic lesions. The final diagnosis of CEOT was established based on the histopathological aspects.

DISCUSSION

This tumor is more frequent in adult men, usually develops in the posterior region of the mandible and may present clinical-pathological similarities with others odontogenic lesions. The radiological aspects observed in the CEOT are variable and depend on the time of evolution of the tumor. The histopathological examination is mandatory to establish the final diagnosis.

CONCLUSION

Our case was treated with simple enucleation without signs of recurrence in five years of follow-up. Further studies are needed to understand the aetiology and the biological behaviour of this tumor.

Pindborg tumor: Pathology with special stains

Odontogenic tumors constitute a wide spectrum of lesions ranging from malignant and benign neoplasms to dental hamartomas, all derived from the epithelial and ectomesenchymal remnants of the tooth forming apparatus. Calcifying epithelial odontogenic tumor (CEOT) is an uncommon, benign epithelial odontogenic tumor first described by Pindborg in 1956. It is a universally accepted eponym for this neoplasm. Pindborg tumor or CEOT is a locally aggressive neoplasm that accounts for 1% of the total odontogenic tumors, with recurrence in 14% of cases. The etiology of this tumor remains an enigma to the clinician. Pindborg suggested that the tumor arises from the remnants of reduced enamel epithelium of an unerupted tooth. Recent studies in literature report that the tumor arises from stratum intermedium. We report a case of Pindborg tumor in a 22-year-old male patient in the left mandibular posterior region. Radiographically, a well-defined radiolucency was associated with unerupted mandibular second molar which was displaced to the inferior border of the mandible. Along with routine haematoxylin and eosin stains, this case reports histopathological findings using Congo red stain and modified Gallegos stain.

Giant dentinogenic ghost cell tumor: A case report

Dentinogenic ghost cell tumor (DGCT), a rare, benign odontogenic tumor with aggressive behavior, causes bone destruction and cortical expansion. We report here a case of DGCT in a 38-year-old male, presenting with enormous extraoral protrusion, which radiographically was predominantly radiolucent with radiopaque areas. Microscopically, it was observed to be a solid ameloblastomatous proliferation with pseudoglandular structures associated with clusters of ghost cells. Abundant dentinoid material adjacent to the epithelial sheets containing entrapped epithelial tumor cells was also evident. Immunohistochemistry revealed positivity for pan-cytokeratin (CK), CK-14, CK-7, and CK-19; CD138; and β-catenin. The Ki-67 proliferative index was very low (<1%). The clinical, histopathologic, and immunohistochemical features led to the diagnosis of DGCT. The patient underwent partial mandibulectomy, and no recurrences have occurred. To our knowledge, this is the largest DGCT described in the English language literature.

[Calcifying epithelial odontogenic tumor: two cases report]

Calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial tumor of odontogenic origin. CEOT is a benign but a locally infiltrative tumor. CEOT has two clinical variants: intraosseous (central) CEOT and extraosseous (peripheral) CEOT. The peripheral type is rare. In this paper, we report two cases of CEOT. The diagnoses of the cases were verified by histopathology. This study aims to explore the clinical and imaging appearances of CEOT and improve the understanding of the disease.

Intraosseous calcifying epithelial odontogenic (Pindborg) tumor: A rare entity

Calcifying epithelial odontogenic tumor (CEOT) is a locally aggressive, rare benign odontogenic neoplasm that accounts for <1% of all odontogenic tumors. It was first described by a Dutch pathologist Jens Jorgen Pindborg in 1955. It is most often located in the posterior mandible. The tumor usually appears between the second and sixth decade of life and has no gender predilection. It is slow-growing neoplasm with a recurrence rate of 10-15% and with rare malignant transformation. Early diagnosis is essential to avoid oro-maxillofacial deformation and destruction. CEOT is rarely reported in India. We, herewith present a rare case of CEOT with unusual features associated with an impacted right third molar in the posterior mandible of 35 years male, with an emphasis on clinical, radiographic, histopathology and immunohistochemical features.