Browsing by Author "Valejo Coelho, P"
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- Intra- and Interreader Variability of Orbital Volume Quantification Using 3D Computed Tomography for Reconstructed Orbital FracturesPublication . Gomes de Oliveira, P; Perry da Câmara, C; Valejo Coelho, PPurpose: Management of orbital fractures continues to present some difficulties, particularly regarding the prediction of late complications. Radiographic assessment provides a detailed evaluation, but the results lack consistency to be considered a standard factor in the decision-making process. Studies focusing on reliability of post-operative imaging are lacking. Materials and methods: We performed a retrospective study using patients from a major trauma center with unilateral orbital floor fracture who underwent surgery. Using three-dimensional volume assessment software, we performed a volume calculation and determined the intra- and interreader variation by intraclass correlation coefficient analysis. Results: Twenty-four orbits were assessed. Mean orbital volume (SD) was 24.02 (2,43) cm3 for reader 1 and 24.08 (2,51) cm3 for reader 2. The intraclass correlation coefficient (95% CI) was 0.95 (0.91-0.98) between readers and 0.96 (0.91-0.98) for intra-reader variability. Normal and reconstructed orbits assessed separately also showed very high correlation coefficient for both intra- and inter-subject variability. Conclusion: Results show an almost perfect agreement of volume assessment between readers. The presence of reconstruction material does not seem to add variability. Although reproducible and reliable, radiological volume assessments have not yet shown a clear correlation with clinical outcomes and post-operative management decisions should be based mainly on clinical findings.
- Odontoameloblastoma: a Propósito de um Caso ClínicoPublication . Semedo, C; Nunes da Silva, L; Foreid, S; Gomes, B; Pratas, AC; Valejo Coelho, PO odontoameloblastoma é um tumor odontogénico misto muito raro. Reportam-se 29 casos bem documentados na literatura inglesa consultada, dos quais apenas 5 têm envolvimento do segmento anterior da mandíbula. Um homem de 51 anos apresentava um tumor da região anterior da mandíbula, com tumefacção dura, difusa e indolor na região parassinfisária direita da mandíbula. Radiograficamente existia extensa lesão radiolucente, bem delimitada, desde o dente 46 ao dente 34, com pequenas estruturas calcificadas no interior. Observava-se expansão óssea com provável perfuração cortical e reabsorções radiculares. Após biópsia realizou-se resseção cirúrgica. O exame anatomopatológico permitiu o diagnóstico de odontoameloblastoma. Não houve recorrência nos 30 meses de seguimento. O odontoameloblastoma é um tumor localmente agressivo com comportamento aparentemente semelhante ao dos ameloblastomas, em termos de crescimento, expansão óssea, rizólise e recorrência, parecendo prudente adotar o mesmo critério terapêutico para ambos.
- Pseudoaneurysm of the Facial Artery Territory in an Odontogenic Infection SettingPublication . Lopes Oliveira, MJ; Semedo, C; Quintela, MJ; Fragata, I; Gonçalves Coelho, C; Valejo Coelho, PA pseudoaneurysm of the facial artery is a rare event. It results from vessel wall disruption with blood tamponade from the surrounding tissues, and is usually caused by blunt facial trauma, with other etiologies rarely reported. We present two cases of a pseudoaneurysm in the facial artery territory in an odontogenic infection setting, highlighting the importance of computed tomography angiography for diagnosis and hastening treatment by vascular embolization.