ORAL AND MAXILLOFACIAL PATHOLOGY e74 Abstracts silicone drain. Six months after decompression, the lesion was enucleated. Histopathologic examination diagnosed the OOC. The patient showed no recurrence of the lesion after 3 years of follow-up.
CPP100 - MALHERBE’S CALCIFYING EPITHELIOMA (PILOMATRIXOMA): A SERIES OF THREE CASES. HANNAH MARCELLE PAULAIN CARVALHO, MARCELO VINICIUS DE OLIVEIRA, VALBER BARBOSA MARTINS, JOEL MOTTA JUNIOR, THIAGO ESTEVES VEDOR, TIAGO NOVAES PINHEIRO, FLAVIO TENDOLO FAYAD. Herein we report on 3 clinical cases of pilomatrixoma, discussing the diagnosis and clinical and histologic features, as well as treatment. Pilomatrixoma is a benign tumor of the skin, originating from within the hair follicle matrix, and represents 0.12% of skin tumors. The lesion has its peak incidence in the first and sixth decades of life, being more common in women. Patients reported to the service presenting with nodular lesions as their chief complaint. Clinical examination revealed painless, firm, fluctuating nodule on palpation. Locations of the lesions were: left preauricular region, left zygomatic region and right mandibular angle. The patients ranged in age from 10 to 30 years. Two cases had fine needle aspiration procedure, but only 1 had cytopathologic suggestion of pilomatrixoma. Excisional biopsy was performed in 3 cases with histopathologic diagnosis confirmation. Patients were followed-up without recurrence for 6 to 24 months.
CPP101 - STAFNE’S BONE CAVITY IN THE ANTERIOR MANDIBLE: A CASE REPORT EMPHASIZING THEIR ETIOPATHOGENETIC MECHANISMS. DÉBORA CAMPANELLA BASTOS, ANDREIA BUFALINO, EMANUELA FERRAZ, SAMUEL PORFIRIO XAVIER, LUCIANA YAMAMOTO DE ALMEIDA, FERNANDO CHAHUD, JORGE ESQUICHE LEÓN. Stafne’s bone cavity (SBC) is an asymptomatic lingual bone cavity situated near the angle of the mandible. The anterior variant of SBC, often showing a radiolucent unilateral ovoid lingual bone concavity in the canine-premolar mandibular region, is uncommon. A 73-year-old male patient was referred for routine dental examination. Panoramic radiograph and CT scans showed a well-defined lingual bony defect in the anterior mandible. Interestingly, analysis of imagiologic documentation, made 14 years earlier, revealed a progressive increase in mesiodistal diameter, being the origin predominantly central. Thus, unlike all SBC cases previously reported, in the current case there was evidence of central onset of the lesion and later exteriorization through the perforation of the lingual cortical. The soft tissue obtained within the bone defect microscopically revealed fibrous stroma containing vessels of varied caliber. Our case suggests reappraisal of the classical theories (salivary gland entrapped or pressure resorption) to explain the SBC pathogenesis.
CPP102 - SUBGEMMAL NEUROGENOUS PLAQUE ASSOCIATED WITH BURNING TONGUE. KARIN SÁ FERNANDES, DÉCIO DOS SANTOS PINTO-JUNIOR, MARCO RODRIGUES SQUADRANS, MARINA GALLOTTINI. Subgemmal neurogenous plaques (SNP) are biphasic neural structures with neurofibroma and neuroma patterns found on the posterolateral border of the tongue. The clinical aspects of SNP are
OOOO August 2017 not well described and most reported cases were incidental histologic findings. Herein we describe a case of a 57-year-old female patient that was referred to our clinic with the complaint of burning sensation in the left posterolateral border of the tongue for 12 months. Intraoral examination revealed a good oral health and a slightly erythematous area in the left lateral border of the tongue. An incisional biopsy was performed, and histopathologic exam revealed a mucosal fragment with ecstatic congestive vessels, mononuclear cell focal inflammatory infiltration, and subepithelial aggregates of ganglion cells and nerve plexus. Immunohistochemical analysis showed intense expression of S100. The final diagnosis was SNP. Further studies are indispensable to understand the biology, clinical, and histopathologic aspects of SNP.
CPP103 - ODONTOGENIC CALCIFYING CYSTIC TUMOR - COMPILATION OF TWO CASES. RAFAEL SARAIVA TORRES, GUSTAVO CAVALCANTI DE ALBUQUERQUE, JOEL MOTTA JUNIOR, MARCELO VINICIUS DE OLIVEIRA, VALBER BARBOSA MARTINS, TIAGO NOVAES PINHEIRO, FLÁVIO TENDOLO FAYAD. Herein we describe a series of 2 cases of odontogenic calcifying cystic tumor. The first case is a 37-year-old female patient with swelling in the anterior maxilla with a 5-year history of evolution. CT scan revealed a well circumscribed hypodense lesion comprising teeth 21, 22, 23, and apex of 24, without radicular reabsorption. Clinical examination revealed pain on palpation. After enucleation, all removed tissue was submitted to histopathologic evaluation that confirmed the diagnosis. The patient is still under follow-up after 12 months without recurrence. The second case is a 13-year-old female patient that reported contusion in the left zygomatic region with 6 months of evolution. A unicystic lesion without deviation of adjacent teeth was observed on tomographic scan examination. The lesion was enucleated without recurrence in control for 1 year. Microscopic examination also confirmed the diagnosis of odontogenic calcifying cystic tumor.
CPP104 - CALCIUM HYDROXYAPATITE DERMAL FILLER-RELATED ORAL LESION: CLINICOPATHOLOGIC AND RAMAN MICROSPECTROSCOPY ANALYSIS. FÁBIO WILDSON GURGEL COSTA, FRANCISCO SAMUEL RODRIGUES CARVALHO, MÁRIO ROGÉRIO LIMA MOTA, VICTOR PINHEIRO FEITOSA, PAULO GOBERLÂNIO DE BARROS SILVA, ANA PAULA NEGREIROS NUNES ALVES, EDUARDO COSTA STUDART SOARES. A 65-year-old female patient was referred for oral evaluation, complaining of a painless intraoral lesion present for 15 days. The patient reported that the nodules arose spontaneously without symptoms of oral infection. Also, the patient did not recall any dental or medical procedures that she thought were related to the lesion. Intraoral examination showed a firm nodule in the lower lip vestibule. Microscopically, an intense granulomatous inflammation with giant cells associated with microsphere foreign bodies were observed, which were Von Kossa-positive structures. Raman micro-spectroscopy confirmed the presence of calcium hydroxyapatite into these foreign bodies. After the incisional biopsy, the patient revealed the use of a dermal filler (RadiesseÒ) 4 months before. Currently, the patient is under observation. Adverse reactions to dermal fillers are well documented; however, to date there are only 4 publications focusing on RadiesseÒrelated oral lesions.