Renato Kobler Pinto Lopes Sampaio

Aspectos radiológicos e epidemiológicos do granuloma central de células gigantes

OBJECTIVE: The present study was aimed at evaluating main radiological and epidemiological aspects of giant cell lesions (central giant cell granuloma and brown tumors of hyperparathyroidism). MATERIALS AND METHODS: The sample consisted of 26 giant cell lesions diagnosed in 22 patients divided into two groups, one of them including 17 patients who were not affected by hyperparathyroidism (group A) and another including five patients with such a disorder (group B). RESULTS: Prevalence was higher in female patients (72.7%). Most frequently, lesions occurred more in the second decade of life (mean age, 27 years). The mandible arc was most frequently involved (61.5%). Radiographically, 57.7% of lesions were multilocular and 42.3% were unilocular with defined limits. All of the 26 lesions caused expansion of bone, 15.4% radicular resorption, 50% dental displacement, and 11.5% produced pain. In the mandible 18.7% of the lesions crossed the midline. Group A showed 66.7% of lesions in the mandible and group B showed an even distribution of lesions between arches. In group A 66.7% of lesions were multilocular, and 33.3% unilocular; in group B 62.5% were unilocular, and 37.5% multilocular. CONCLUSION: Giant cells lesions may present themselves with a wide spectrum, from small, slow-growing unilocular lesions to extensive multilocular lesions. They present features of benignity, though some lesions may demonstrate a locally aggressive behavior.

Calcifying epithelial odontogenic tumor (Pindborg tumor): Report of case

Abstract The calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial odontogenic lesion that comprises from 0.2% to 1% of all odontogenic tumors. 1 Clinically in manifests as a bony lesion, accounting for the majority of cases (95%), or as the extremely rare peripheral type (5%). In the past a number of different names have been given to this lesion, such as calcifying ameloblastoma, 1 malignant odontoma, 1 adamantoblastoma, 2 adenoid adamantoblastoma, 3 cystic complex odontoma, 3 uncommon ameloblastoma with calcifications, 1 and others. In 1956, Pindborg 4 delineated this lesion as a distinct entity and named it the calcifying epithelial odontogenic tumor. In 1963, along with a comprehensive review of the literature, Shafer et al 5 suggested the eponym “Pindborg tumor.” The purpose of this article is to report an additional case of the CEOT and discuss important aspects of the radiographic appearance, histologic features, clinical behavior, and surgical management.