CPP83 - EVALUATION OF THE OUTCOME OF FOUR TREATED CASES DIAGNOSED AS OSSIFYING FIBROMA. DIRCEU VIRGOLINO DE OLIVEIRA, VALBER BARBOSA MARTINS, MARCELO VINICIUS DE OLIVEIRA, GUSTAVO CAVALCANTI DE ALBUQUERQUE, JOEL MOTTA JUNIOR, TIAGO NOVAES PINHEIRO, FLÁVIO TENDOLO FAYAD. Herein we report a series of 4 cases of ossifying fibroma, itemizing their clinical, radiographic, and histologic characteris- tics, as well as their treatment outcomes. Ossifying fibroma is a benign fibro-osseous tumor of the craniofacial region. The lesion is asymptomatic in most cases, causing tumefaction and moderate deformity. All patients reported with facial deformity as their chief complaint. Two cases affected the mandible and the other 2 the maxilla. Patients’ age at diagnosis ranged between 8 and 20 years. Incisional biopsy was carried out on the lesions and sent for histopathologic diagnosis. The treatment of choice was complete resection of the lesions. Follow-up for approximately 18 months after surgery, all patients remain under periodic clinical and topographic follow-up without recurrences, confirming the good prognosis and the low recurrence of the ossifying fibroma. CPP84 - NEUROFIBROMATOSIS TYPE 1 SYNDROME: TWO CASES WITH DIFFERENT CLINICAL MANIFESTATIONS. DIRCEU VIRGOLINO DE OLIVEIRA, VALBER BARBOSA MARTINS, MARCELO VINICIUS DE OLIVEIRA, GUSTAVO CAVALCANTI DE ALBUQUERQUE, JOEL MOTTA JUNIOR, TIAGO NOVAES PINHEIRO, FLÁVIO TENDOLO FAYAD. The wide spectrum of neurofibromatosis type 1 is represented by many neuroectodermal alterations comprising benign and malignant tumors, nervous system commitment, glandular and osseous alterations, and pigmentation disorders. Herein we report on 2 cases of neurofibromatosis type 1 with oral manifestations. The patients presented with complaints of nodular swelling. Clinical examination revealed firm consistency on palpation. One patient presented with an inferior lip lesion, while the second presented with a left maxillary lesion. Excisional biopsy was performed in both cases and the respective tissues were submitted for histopathologic diagnosis, which revealed neurofibromas in both. After this diagnosis, other manifestations were detected, corroborating the diagnosis of neurofibromatosis type 1 syn- drome. These patients are still under medical and dental follow-up and no recurrences of the oral lesions have been identified. CPP85 - DIAGNOSIS AND TREATMENT OF WELL-DIFFERENTIATED SQUAMOUS CELL CARCINOMA IN AREA OF ACTINIC CHEILITIS. JÉSSICA BARROSO BARBOSA, VILMA MELO, TIAGO NOVAES PINHEIRO. Herein we report on a case of well-differentiated squamous cell carcinoma in actinic cheilitis area with moderate epithelial dysplasia. A male patient, 64 years old, leucoderma, telecommu- nication technician, was referred to the oral medicine service featuring white lesion and increased uneven surface, poorly defined edges, asymptomatic, approximately 3 years of evolution, with no bleeding. The patient claimed to be a former smoker for 20 years, but quit smoking in the past 3 years. The lesion involved the entire lower lip vermilion. Lower lip vermilionectomy was performed and the obtained tissue was sent for histopathologic examination, which confirmed the diagnostic hypothesis. The patient was referred to the reference oncology service after diagnosis and has remained in follow-up for18 months with no recurrence. Also, the patient was advised regarding sunlight exposure during work activities. CPP86 - SURGICAL TREATMENT OF GRANULOMA GRAVIDARUM IN THE TONGUE: CASE REPORT. HECTON TOMOHIKO OLIVEIRA SATO, TIAGO NOVAES PINHEIRO, YLRI HIROKATSU SATO, MARCEL KIYOSHI LIMA KIMURA. Herein we report on a case of pyogenic granuloma in a preg- nant women, so called granuloma gravidarum. A 40-year-old fe- male patient presented to the oral surgery service at her 37th week of pregnancy complaining of local pain and dysphagia. The lesion had 4 months of evolution, and was caused by trauma of the tongue by a fractured tooth restoration of element 36. Clinical examination revealed an exophytic, pedicled of fibro-elastic consistency, red- dish with whitish areas, bleeding in the left side edge of the tongue, approximately 1.5 cm diameter in the largest dimension. Exci- sional biopsy was performed and all tissue was submitted to his- topathologic examination. Microscopic examination confirmed the diagnosis of pyogenic granuloma. The patient remains under observation after 6 months without recurrence. CPP87 - TRAUMATIC ULCERATION IN THE VENTRAL TONGUE IN A PEDIATRIC PATIENT: A CASE REPORT. GISELLE DINIZ GUIMARÃES DA SILVA, TIAGO NOVAES PINHEIRO, ALESSANDRA VALLE SALINO, JEAN JACQUES DA SILVA ANDRADE, LIONEY NOBRE CABRAL. Oral ulcers are fibrinopurulent membranes bounded by an erythematous range resulting from trauma. Herein we report on a patient that in about a week found himself hospitalized and under systemic antibiotic therapy because of complaints of pain lesion in the ventral tongue with 60 days of evolution. Clinical exami- nation noted the ulcerative lesion and intense caries activity that contributed to the changing anatomy of the teeth present, mainly of the lower, making them submit irregular and sharp edges. The diagnostic hypotheses were eosinophilic ulceration and traumatic ulceration. Histopathology was not performed. Systemic anti- biotic therapy was suspended and anti-inflammatory topic was prescribed, regularization procedures of dental edges were per- formed with application of glass ionomer cement, molding to obtain a working model that made into a silicone tray. After 15 days of use of the silicon device, the lesion regression contributed to the diagnosis of traumatic etiology of ulceration. CPP88 - ADVANCED-STAGE ODONTO- GENIC MYXOMA WITH RADICAL TREATMENT: REPORT OF TWO CASES. GILCINETE SOUZA OLIVEIRA, VALBER BARBOSA MARTINS, GUSTAVO CAVALCANTI DE ALBUQUERQUE, MARCELO VINICIUS DE OLIVEIRA, JOEL MOTTA JUNIOR, TIAGO NOVAES PINHEIRO, FLAVIO TENDOLO FAYAD. Herein we report on 2 cases of odontogenic myxoma in the left body and ramus of the mandible, treated with mandibular resection. The first case was a 26-year-old female patient who that reported with persistent ulcerated lesion after the extraction of tooth 48. Pantographic examination revealed a honeycomb-like lesion comprising the left body to the retromolar area of the mandible. The second case was a 29-year-old female patient with OOOO ABSTRACTS Volume 124, Number 2 Abstracts e71