Ameloblastomas: a regional Latin‐American multicentric study

Abstract

In this study we found that UA was frequently misdiagnosed as SA; however, there are enough clinical and microscopic features that allow for an accurate differentiation between both types of ameloblastoma that should be recognized for surgical and prognostic purposes. In this study, SA was not found in patients younger than 20 years, UA had a constant myxoid stroma while mature connective tissue was more frequently associated with the solid type.

Odontogenic tumors: a 14-year retrospective study in Santa Catarina, Brazil

“…5,9,13,23,24 The most frequent clinical presentation was of the solid ameloblastoma (61%) and, histologically, of the follicular variant (33%). This is very similar to what was observed in the studies conducted by Ledesma-Montes et al, 7 Osterne et al, 13 Saghravanian et al 15 and Santos et al 5 However, Fregnani et al 24 observed that the most frequent histological variant was the plexiform, which was observed in 53% of the cases. In our study, the posterior mandibular area was the preferred location, which was consistent with other studies.…”

“…23 In our study, the incidence of ameloblastoma was 23% in all diagnosed cases, and these data are similar to findings from other studies. 7,14,18,20 No gender-related preponderance was noted in our study, which was different from other studies in which the incidence in the female gender was higher. 5,9,13,23,24 The most frequent clinical presentation was of the solid ameloblastoma (61%) and, histologically, of the follicular variant (33%).…”

“…In Brazil, studies report that the incidence of these lesions varies between 2.4%, 5 and 6.8% 6 of all diagnosed oral lesions. Findings from other parts of Latin America are similar, such as those by Ledesma-Montes et al, 7 whose multicentric study (realized in Mexico and Guatemala) observed a 2.16% incidence of OTs, and in another study performed in Chile in which the authors found an incidence of 1.29% for OTs 8 among all the oral lesions diagnosed in their services. Studies from other parts of the world, such as the one conducted by Jones and Franklin 9 in the United Kingdom, found a lower frequency of 0.8% for all OTs.…”

“…OTs are lesions rarely observed in dentistry clinics, [5][6][7]9,12,13 and their frequency was 3% in our study, with a mean age of 30 years, varying between 5 and 75 years, and occurring more often in male patients. Their main location was in the posterior mandibular area.…”

“…In our study, the posterior mandibular area was the preferred location, which was consistent with other studies. 5,7,13,14,19,[22][23][24] Odontoma, also considered a frequent OT, was the third-most common lesion in our study. In some studies, it is shown to be the most frequent lesion, 5,6,12,22 although our study is more consistent with those conducted by Avelar et al, 18 Fernandes et al, 23 Jing et al, 19 Jones and Franklin, 9 Olgac et al, 14 Osterne et al, 13 and Saghravanian et al 15 in presenting an incidence of approximately 17%.…”