ADENOID CYSTIC CARCINOMA OF MINOR SALIVARY GLANDS: CASE REPORT

ADENOID CYSTIC CARCINOMA OF MINOR SALIVARY GLANDS: CASE REPORT

ABSTRACTS e82 Pleomorphic adenoma is the most common benign neoplasm of salivary glands, representing about 33% to 43% of tumors of the minor saliva...

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ABSTRACTS

e82

Pleomorphic adenoma is the most common benign neoplasm of salivary glands, representing about 33% to 43% of tumors of the minor salivary gland. The palate is the most frequent intraoral site followed by the upper lip and the buccal mucosa. This report describes the development of pleomorphic adenoma in the infratemporal space in a 72-year-old woman. The lesion presented as a submucosal nodule, palpable deep in the left buccal mucosa. The computed tomography revealed a lobed hypodense formation partially obliterating the fat planes between the masseter and buccinator muscles. Surgical excision of the lesion was performed with histopathologic report of pleomorphic adenoma, and the patient is being followed up for 5 months with no signs of recurrence. It is important to note the unusual location and the importance of investigation and diagnostic elucidation for the correct therapeutic approach.

ADENOID CYSTIC CARCINOMA OF MINOR SALIVARY GLANDS: CASE REPORT. CAMILA OLIVEIRA SANTOS, ALYNE AMORIM DE  ARAUJO, RODRIGO RESENDE, VANIA DO CARMO, LUISA AGUIRRE BUEXM, ADRIANA TEREZINHA NEVES NOVELLINO ALVES and, SIMONE DE QUEIROZ CHAVES LOURENCO ¸ Adenoid cystic carcinoma (ACC) is a malignant neoplasm of salivary glands that, with slow growth and infiltrative tumor, clinically is characterized by a firm mass. A 49-year-old brown female patient sought dental care with complaints of “headaches and nasal congestion over 10 months.” On the anamnesis she reported systemic arterial hypertension. Extraoral examination revealed facial asymmetry in the left maxillary region and absence of palpable lymph nodes. The intraoral examination revealed an increase in volume and ulcerated lesions in the left hard palate region. Radiopaque examination of the maxillary sinus and reabsorption of the 28 were performed on the radiographic examination. An incisional biopsy was performed with a diagnostic hypothesis of lymphoma. Histopathology reported an ACC. The patient was referred for oncologic treatment and will undergo subtotal maxillectomy with reconstruction by head and neck microsurgery. The biological aggressiveness of ACC is usually underestimated because of slow growth.

INTRAMUSCULAR HEMANGIOMA OF THE LOWER LIP. DANIEL CAETANO, FERNANDO LIMA, WLADIMIR CORTEZZI, BEATRIZ CORDEIRO, MICHELLE AGOSTINI, BRUNO  AUGUSTO BENEVENUTO and, MARIO JOSE e ROMANACH Intramuscular hemangioma (IH) is relatively uncommon, accounting for less than 1% of all hemangiomas, usually located within the skeletal muscles of the trunk or limbs, particularly in the pelvic region. Approximately 10% of IH may occur in the head and neck region, most commonly affecting the masseter, sternocleidomastoid, and trapezius muscles. A 57-year-old man was referred for evaluation of a 4-cm asymptomatic, bluish, and slow-growing swelling of the lower lip. The patient’s history included lower lip trauma and bleeding 5 years earlier. The clinical differential diagnosis included mucocele, angioleiomyoma, and salivary gland tumor. The patient was submitted to excisional biopsy under general anesthesia. Microscopically, proliferating vascular channels lined by endothelium and smooth muscle were observed infiltrating diffusely skeletal muscles, adipose tissue, and connective tissue. The final diagnosis was IH.

OOOO January 2020 The patient is under regular follow-up with no recurrence. IH rarely affects the lips.

GRANULAR CELL TUMOR: CASE REPORT.  HERIKA CRISTINA SILVA DE SOUZA, SIMONE HENRIQUES MACHADO, ANA  e LEITE, ADRIANA FLAVIA SCHUELER DE ASSUMP¸C AO TEREZINHA NEVES NOVELLINO ALVES, LUCIANA WERNERSBACH PINTO and, SIMONE DE QUEIROZ CHAVES LOURENCO ¸ Patient D.S.O., a 38-year-old black woman who was a smoker for 27 years, sought dental care complaining of “a ball that appeared on the tongue after eating fish and the fishbone stuck into the tongue.” There was a gradual volumetric increase in region corresponding to the dorsum of the tongue for 5 years. On intraoral examination, a soft tissue nodule was found on the dorsum of the tongue, which was exophytic, sessile, single, welldelimited, elliptical, of firm consistency, smooth, white, asymptomatic, and measured about 5 cm. Preoperative laboratory testing was requested: complete blood count, coagulogram, and glucose, all with normal values. An excisional biopsy was performed for histopathologic examination. The clinical diagnosis was irritation fibroma. The histopathologic diagnosis was granular cell tumor. In the postoperative period there were no signs and symptoms. The granular cell tumor is rare tumor with the uncertain histogenesis and shows greater predilection for the oral cavity.

VASCULAR LEIOMYOMA: A RARE CASE REPORT IN THE BUCCAL MUCOSA. JAQUELINE LEMES RIBEIRO, FERNANDA HERRERA DA COSTA, RENATA MENDONCA ¸ MORAES, ANA SUELI RODRIGUES CAVALCANTE, ESTELA KAMINAGAKURA TANGO, YASMIN RODARTE CARVALHO and, ANA LIA ANBINDER Angioleiomyoma is a benign neoplasm with perivascular smooth muscle origin and is rare in the mouth. A male patient presented to our service with the chief complaint of an asymptomatic facial lesion. In the intraoral examination, a 1.5-cm submucosal nodule in the left cheek was observed. Doppler ultrasonography showed an image of a lobulated, hyperechoic nodule with defined limits and no change in the blood flow. The clinical hypotheses were lipoma, solitary fibrous tumor, and salivary gland neoplasm. Histologic examination after excisional biopsy revealed a delimited lesion, presenting multiple vascular spaces of varying sizes and calibers, sometimes congested and interconnected, covered by endothelium and spindle cell layers of variable thickness. A mixed thrombus with an organization area composed of granulation tissue was also found. Neoplastic cells were immunoreactive for smooth muscle actin and negative for CD34, confirming the diagnosis of angioleiomyoma. After 6 months of follow-up, no signs of recurrence were observed.

GIANT CELL TUMOR IN SINUS MAXILLARY AND NASAL CAVITY: A RARE CASE REPORT. BRENDO VINICIUS RODRIGUES LOUREDO, GERSON DE OLIVEIRA PAIVA NETO, ELIANDRO DE SOUZA FREITAS, FRANCISCO AMADIS BATISTA   TATIANA NAYARA FERREIRA, FABIO ARRUDA BINDA,  ^ LIBORIO-KIMURA and, JECONIAS CAMARA