Accuracy of clinical diagnosis for the identification of potentially malignant disorders and malignant lip lesions

Abstract: The aim of this study was to assess the accuracy of clinical diagnosis for lip lesions based on sensitivity and specificity. The retrospective analysis focused on the detection of lesions caused by potentially malignant disorders (PMDs) and malignant lesions (n = 1195). All cases were classified as benign, PMD, and malignant lesions. Concordance between diagnoses based on clinical examination and those based on histopathological analysis was assessed, and accuracy for the identification of PMD and malignant lesions was calculated. Histopathological analysis revealed 44 lesion types; PMD and malignant lesions comprised 8.3% of all cases. Compared with histopathological analysis, clinical examination showed 97.4% accuracy for the identification of non-malignant and potentially malignant/malignant cases. Degrees of specific sensitivity ranged from 34% to 77% for different lesions, and were highest for autoimmune (77%) and reactive (72%) lesions. Positive and negative predictive values for the identification of PMD and malignant lesions were 81.9% and 98.9%, respectively. Clinical examination showed a high degree of accuracy for the detection of PMD and malignant lip lesions, indicating good reliability.

Tumor de células granulares: relato de dois casos / Granular cell tumor: report of two cases

O tumor de células granulares (TCG) é uma neoplasia benigna incomum de tecidos moles. Dorso e borda lateral de língua são os sítios mais comumente afetados. Clinicamente, apresenta-se como uma lesão nodular, firme à palpação, bem delimitada, de crescimento lento. O objetivo deste trabalho é relatar dois casos clínicos de TCG mostrando seu aspecto clínico, histopatológico e discutir as hipóteses de diagnóstico e conduta realizada em cada caso.

The granular cell tumor (GCT) is an uncommon benign neoplasm of soft tissue. The sites most commonly affected are the dorsum and lateral border of the tongue. Clinically it presents as a nodular lesion, firm to palpation, well-defined with slow-growing. The aim of this study is to report two cases of GCT showing its clinical and histopathological aspects, and discuss the diagnosis and management of each case.

Estudo dos casos de ameloblastomas diagnosticados no Laboratorio de Patologia Bucal da Faculdade de Odontologia da Universidade Federal do Rio Grande do Sul / Study of ameloblastoma's cases diagnosed in the Oral Pathology Laboratory of the Faculty of Dentistry of the Federal University of Rio Grande do Sul

Com o objetivo de obter um perfil de indivíduos afetados por ameloblastoma e comparar os resultados com os estudos encontrados na literatura, realizou-se uma análise retrospectiva dos casos de ameloblastomas do Laboratório de Patologia Bucal da FO-UFRGS. Os resultados revelaram uma maior ocorrência em indivíduos jovens, do sexo feminino, raça branca, localização predominantemente na mandíbula e tipo histológico plexiforme. Conclui-se que, o perfil dos pacientes com ameloblastoma diagnosticados no Laboratório de Patologia Bucal da FO-UFRGS concorda com o perfil de pacientes com ameloblastoma diagnosticado em outras partes do mundo e relatado na literatura diferindo apenas no que se refere a faixa etária no momento do diagnóstico