PLASMA CELL GINGIVITIS MIMICKING GINGIVAL HYPERPLASIA: CASE REPORT

PLASMA CELL GINGIVITIS MIMICKING GINGIVAL HYPERPLASIA: CASE REPORT

ABSTRACTS e120 An incisional biopsy was performed with the hypothesis of pleomorphic adenoma. Histopathologic analysis confirmed the diagnosis of ch...

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ABSTRACTS

e120

An incisional biopsy was performed with the hypothesis of pleomorphic adenoma. Histopathologic analysis confirmed the diagnosis of chondroid choristoma. The lesion was treated with its surgical enucleation, removing adjacent excess mucosae. The patient was followed up for 8 months with no recurrence.

ORAL MANIFESTATION OF SYPHILIS: AN UNUSUAL PRESENTATION OF TERTIARY SYPHILIS. EMANUELY SILVA, ETIENE DE ANDRADE MUNHOZ, ALESSANDRA RODRIGUES DE  LUZ LISBOA, LEE I-CHING, LUIZ CAMARGO, MARIAH FERNANDO SOMACAL and, LILIANE JANETE GRANDO A 48-year-old female patient, a smoker and alcohol user, presented a painful ulcer lesion with a central crusty, bleedingto-the-touch growth of 2.5 cm on her lower lip for 40 days. Also, skin lesions looked like eczematous dermatoses, and lymph nodes were soft and sore. Exfoliative cytology excluded malignancy, immunophenotype was negative, and histopathology showed formation of granulomas and vascular proliferations, suggesting Spirochaetas presence. Laboratorial examinations showed human hepesvirus 8/Epstein-Barr virus/cytomegalovirus ( ), HIV 1-2 ( ), Venereal Disease Research Laboratory (+), rapid plasma reagin test reactive at 1:64, and fluorescent treponemal antibody absorption (+). The final diagnosis was tertiary syphilis, and the lesion on the lower lip was characterized as syphilitic gumma. The patient was referred to gynecology service. The treatment was based on intramuscular benzathine penicillin, divided in 3 weekly doses. After a small improvement of the lesion, another Venereal Disease Research Laboratory serology was performed without any changes. The patient is in good health and continues under follow-up.

LOW-GRADE FIBROSARCOMA: A CASE REPORT. PABLYANNE TEREZA LOUZADA GUEDES, WILKELLY ALVES DE LIMA, e GLAUCE GUIMARAES PEREIRA, YURI EDWARDS DE SOUZA DAMASCENO, AMANDA DE OLIVEIRA  MACEDO, FLAVIA SIROTHEAU CORREA PONTES and, ^  HELDER ANTONIO REBELO PONTES Fibrosarcoma is a malignant tumor of fibroblasts, which affects the head and neck region in 10% of cases. A 17-year-old woman sought treatment at an oral pathology center presenting a tumor-like lesion within the angle of the mandible with a timecourse evolution of 10 months. The clinical and radiologic examination revealed expansive radiolucent lesion with bone cortical rupture. The tomographic examination revealed a hypodense image involving submandibular region and mandibular body. An incisional biopsy was performed. Histopathologic examination revealed fusiform cells with areas of mitosis and little pleomorphism. Immunohistochemistry was performed with results of low Ki67, positive vimetin, negative S100, negative HHF35, negative CD31, and negative b-catenin, concluding diagnosis of low grade fibrosarcoma. The patient went through surgical excision with a wide margin of safety, and after 1 year of clinical follow-up there were no signs of lesion recurrence.

DIAGNOSIS OF LUPUS ERYTHEMATOSUS BY ORAL LESIONS: CASE REPORT. YURI KALININ, SUELLEN VIEIRA DO

OOOO January 2020  NASCIMENTO, CLAUDIA PEREZ TRINDADE FRAGA, NARA MARIA VASCONCELOS IELO, LUCYENE MIGUITA LUIZ and, MARCELO MARCUCCI A 49-year-old white female patient presented bilateral white plaques on the buccal mucosa and lateral border of tongue with erythematous background, which was asymptomatic. On anamnesis, the patient reported bald patches in the midscalp region. The oral lesions were treated with 0.05% aqueous clobetasol solution for 15 days without significant improvement. The clobetasol concentration was increased to 0.1% for a further 15 days without significant improvement of the lesions. All treatments were suspended for 15 days, and a biopsy was proposed. Histopathologic analysis suggested the diagnosis of lupus erythematosus. The patient was then referred to rheumatology for the conclusion of the diagnosis, where hematologic tests were requested, confirming lupus erythematosus. The patient has been followed by rheumatology and stomatology.

PLASMA CELL GINGIVITIS MIMICKING GINGIVAL HYPERPLASIA: CASE REPORT.  JESSICA BARROSO BARBOSA, GILCINETE DE SOUZA OLIVEIRA, VALBER BARBOSA MARTINS, MOYARA MENDON¸CA LIMA DE FARIAS, ANDERSON ^ IDELFONSO FERNANDES, JECONIAS CAMARA and,  TATIANA NAYARA LIBORIO-KIMURA Plasma cell gingivitis features a distinctive and rare pattern of gingival inflammation characterized by infiltration of plasma cells in the oral tissues with unknown reason or generally related to an allergen. A 20-year-old female patient attended a surgery service, showing a generalized and painless enlargement of gingiva, with a discrete erythema. She did not have any systemic disease and was not on medication. There was a previous excisional biopsy with an inconclusive diagnosis. The lesion resurged in 3 months, and a new biopsy in the posterior gingiva was then performed with a hypothesis of gingival hyperplasia. Histopathology revealed fibrous connective tissue characterized by deposition of collagenous fibers and intense chronic inflammatory infiltrate predominantly composed of plasma cells but also lymphocytes and eosinophils. The diagnosis of plasma cell gingivitis was then established. Several recommendations were given to the patient in relation to her eating habits and allergen possibilities.

EXTENSIVE AMELOBLASTIC FIBROMA IN A 4-YEAR-OLD GIRL: A CASE REPORT. MICHELE GASSEN KELLERMANN, CARLOS LANE FOGACA, ¸ FERNANDA SOUTTO-MAYOR, ^ ANGELO PARISOTTO and, ANDRE GUOLLO Ameloblastic fibroma (AF) is an uncommon mixed odontogenic tumor that usually occurs in the first 2 decades of life with slightly higher prediction for boys and men. We report a case of AF in a 4-year-old girl who presented with a chief complaint of swelling in the right mandibular posterior region. The computed tomography showed a large multilocular hypodense area extending from mandibular ramus to parasymphysis on the same side, causing dental retention. A presumptive preoperative diagnosis of ameloblastoma was made. An incisional biopsy was performed, and anatomopathologic analysis showed odontogenic epithelial islands and cords in a primitive connective tissue stroma resembling the dental papilla. These findings confirmed