graft on the presented case could be considered a feasible option for the reconstruction, rehabilitation of large mandibular defects. CPP233 - CHONDROBLASTIC OSTEO- SARCOMA OF MAXILLA: A CASE REPORT. MARIA ELISA QUEZADO LIMA VERDE, ALEXANDRE SIMÕES NOGUEIRA, WAGNER ARAÚJO DE NEGREIROS, CARLOS GUSTAVO HIRTH, FERNANDO PORTO CARREIRO FILHO, MÁRIO ROGÉRIO LIMA MOTA, ANA PAULA NEGREIROS NUNES ALVES. Osteosarcoma is the most frequent malignant tumor of bone tissue. In head and neck region, is relatively rare, accounting less than 10% of all osteosarcomas in general. A 20-year-old female patient was referred to our service after orthodontic evaluation, presenting an 8 months history of soft, normochromic and asymptomatic increase of volume in the anterior maxilla, asso- ciated with dental displacement. Radiographically, a radiolucent, large hypodense area was observed, with poorly defined limits, rupture and bulging of vestibular cortical, extending from tooth 13 to 21. Puncture and incisional biopsy were performed. His- topathologic and immunohistochemical analysis were compatible with the diagnosis of chondrosarcoma. Therefore, the treatment of choice was a maxillary obturator prosthesis rehabilitation, following the partial maxillectomy. The histopathologic findings of the surgical specimen supported the diagnosis of chondro- blastic osteosarcoma. The patient was followed-up for 15 months, showing no recurrence, suggesting a favorable prognosis. CPP234 - INCIDENTAL DISCOVERY OF ACINIC CELL CARCINOMA OF THE MINOR SALIVARY GLANDS IN PROXIMITY TO A MUCOCELE. ISRAEL LEAL CAVALCANTE, HUGO COSTA-NETO, ANDREIA FERREIRA DO CARMO, LUIZ ARTHUR BARBOSA DA SILVA, ANA LUIZA DIAS LEITE DE ANDRADE, STEFÂNIA JERÔNIMO FERREIRA, HÉBEL CAVALCANTI GALVÃO. Acinic cell carcinoma (AcCC) is a rare salivary gland ma- lignancy that primarily affects the parotid gland and is considered an indolent tumor. However, some cases are associated with distant metastases and lower survival. Herein we report a case in a 73-year-old male patient with enlargement in the buccal mucosa for 8 months, with recurrent episodes of increasing and decreasing size. Clinical examination revealed an asymptomatic, mucosa-colored sessile mass measuring 2 cm in diameter. Diag- nostic hypothesis was mucocele. An excisional biopsy was per- formed and 2 distinct and anatomically separate lesions, but in close proximity to each other, were discovered. Histopathologic diagnosis of the first lesion was AcCC and the second specimen was a mucus extravasation phenomenon. The patient was referred for treatment and is under follow-up. It is highlighted the importance of careful biopsy for the histopathologic analysis of mucocele-like lesions with apparently indolent clinical features that could be malignant intraoral tumors. CPP235 - CHEILITIS SECONDARY TO SYSTEMIC LUPUS ERYTHEMATOSUS: A CASE REPORT. JULIANA JASPER, LILIANE CRISTINA ONOFRE CASAGRANDE, THIAGO ARAGON ZANELLA, RENATA STIFELMAN CAMILOTTI, EDELA PURICELLI. Systemic lupus erythematosus (SLE) is a multisystem auto- immune disease that is difficult to diagnose because of its often non-specific manifestation. Oral lesions usually involve the pal- ate, buccal mucosa and gingiva. Involvement of the lips is much less common. Here reported the case of a 15-year-old female patient with the complaint of facial edema, lip ulcers, diarrhea, dyspnea, fever, and weight loss. Oral examination revealed desquamated and ulcerated lesions on the lips and labial mucosa. Medical findings revealed the presence of photosensitivity, peri- carditis, arthritis, homogeneous nuclear pattern (ANA 1/640), leukopenia and a positive direct Coombs test that were conclusive for the diagnosis of SLE. After 3 days of pulse therapy with methylprednisolone (1g) and topical clobetasol propionate (0.5 mg), lip lesions completely regressed. The patient is under follow-up, receiving hydroxychloroquine (400 mg/day), azathio- prine (100 mg/day), prednisone (50 mg/day), and calcium car- bonate + vitamin D (1 capsule/day), with good response to treatment. CPP236 - MEDICATION-RELATED OSTEONECROSIS OF JAWS MIMICKING METASTATIC DISEASE IN A PATIENT WITH BREAST CANCER: A CASE REPORT. FELIPE MARTINS SILVEIRA, MARCOS ANTÔNIO TORRIANI, ANA PAULA NEUTZLING GOMES, STEPHANIE JOANA ROMAN MARTELLI, LAUREN FRENZEL SCHUCH, ROBERTA DALMOLIN BERGOLI DE ALMEIDA, ANA CAROLINA UCHOA VASCONCELOS. A 69-year-old female patient was referred to the School of Dentistry/Brazil, on October/2015, complaining about a symp- tomatic swelling in the region of left posterior mandible lasting around 9 months. Her medical history included breast cancer and use of intravenous pamidronate for 2 years. The intraoral exam- ination revealed a slightly ulcerated nodule measuring 0.8 cm in the lower left alveolar ridge. The extraoral examination showed facial asymmetry. The panoramic radiography presented a radi- opacity surrounded by radiolucency located in the region of lower second molar. An incisional biopsy was performed. The histo- pathology analysis showed osteonecrosis. It was prescribed mouthwash with chlorhexidine 0.12% twice a day. After 2 months of the surgery, the patient had no intraoral alteration. The panoramic radiography, realized in March/2016, revealed total repair of the previous bone sequestration. The diagnosis of medication-related osteonecrosis of jaws was made. Currently, there is no evidence of oral disease. CPP237 - LIPOMATOUS PLEOMORPHIC ADENOMA IN PALATE: REPORT OF A RARE CASE. GABRIELA BARBIERI ORTIGARA, ISABELA TORBES RIBEIRO DA SILVA, LUISA MACHADO BARIN, VICTOR DE MELLO PALMA, CARLOS ALBERTO BAZAGLIA ESCOBAR, KÍVIA LINHARES FERRAZZO, CRISTIANE CADEMARTORI DANESI. The lipomatous pleomorphic adenoma is a rare subtype, where lipomatous portion constitutes more than 90% of the lesion. Female patient, 51 years old, leucoderma, came for dental care complaining of a painless lump in the palate with rapid growth. During the clinical examination, a nodular lesion on the hard palate was found, with 1.5 cm of diameter, whitish colored with purplish areas. An excisional biopsy was performed and a rounded fragment, measuring 1.7 x 1.5 x 0.6 cm, of smooth appearance and brown-light colored was sent for histologic analysis. Microscopically, it was observed a well-circumscribed lesion with lipomatous components and myoepithelial cells, ORAL AND MAXILLOFACIAL PATHOLOGY OOOO e100 Abstracts August 2017