Pleomorphic Adenoma of the Submandibular Gland: A Case Report

Abstract

Salivary gland tumours are relatively rare and constitute about 3-4 % of head and neck tumours. Most of the tumours arise from parotid glands. Submandibular gland tumours are very rare. Pleomorphic adenoma of the submandibular gland is exceedingly rare tumour. Very few studies have been reported in the literature that is exclusively conducted on pleomorphic adenoma affecting submandibular gland. Patients usually present with a slow growing, painless and mobile mass without any other associated symptoms. Radiologic studies are usually unable to differentiate benign from malignant tumours in most cases. Recurrence is rare with complete en bloc excision of the tumour along with submandibular gland. Prognosis is excellent except for the rare cases of malignant transformation. This paper describes a case of pleomorphic adenoma affecting submandibular gland with brief review of current literature on submandibular gland tumours.
 Keywords: pleomorphic adenoma; salivary gland; submandibular gland tumours.

Perfil Clínico e Histopatológico das Neoplasias Benignas das Glândulas Salivares em Pacientes Diagnosticados em Serviço de Referência do Estado do Amazonas

“…Com relação ao Adenoma Pleomórfico, foi observado que este possui as características clínicas compatíveis com as relatadas pela literatura, sendo de forma indolor, de coloração variando a semelhante a mucosa à pardoamarelado, base séssil, consistência endurecida, com desenvolvimento no sentido endofítico, borda irregular, superfície lisa, não sangrante, com tempo de evolução de no mínimo 2 meses a 1 ano, com aumento de volume progressivo, firme à palpação, sendo no mínimo 1,0 cm de tamanho, podendo atingir até 4,0 cm [32][33] .…”

“…Além disso, o tumor pode apresentar invasão tumoral e metaplasia escamosa. Estes aspectos são compatíveis com os achados de outros autores [32][33][36][37] .…”

Pleomorphic adenoma in tonsil

“…On the cut surface, they vary from light brown to gray, with or without cartilaginous features. Degenerative and cystic changes can be observed [ 9 , 10 ].…”

Pleomorphic Adenoma of Neck: Case Report

“…Although it is difficult to differentiate between all these pathologies clinically. Histopathological examination is an gold standard for understanding the differential features among all [9] whereas radiologic studies are usually unable to differentiate benign from malignant tumours in most cases [10].…”