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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial

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Clinical case

Multiple intraoral salivary duct cysts: Report of a rare case

Múltiplos cistos do ducto salivar intraoral: Relato de um caso raro


a Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, Brazil
b Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, Brazil
c Department of Surgery and Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, Brazil
Luis Augusto de Almeida-Silva - luis.almeida-silva@unesp.br

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Received on 30/01/2025
Accepted on 30/11/2025
Available Online on 22/12/2025


The salivary duct cyst predominantly presents as a single lesion in the major salivary glands. The occurrence of multiple lesions in minor salivary glands is extremely rare, with only three cases reported in the literature. This case report presents a new case of multiple salivary duct cysts in minor salivary glands. A 62-year-old woman sought dental care, complaining of the sudden appearance of a painful nodule on the upper lip. Intraoral examination revealed multiple submucosal nodules, mobile and slightly tender, occasionally draining mucus through dilated openings, located on the labial and buccal mucosa. Based on the clinical hypotheses of salivary duct cyst, cystadenoma, and canalicular adenoma, an excisional biopsy of the referred nodule was performed under local anaesthesia. Microscopic analysis revealed multiple cystic lesions lined with epithelium that was either cuboidal, squamous, or pseudostratified columnar, with a lumen filled with mucous material. By correlating these findings with the clinical characteristics, the final diagnosis of multiple intraoral salivary duct cysts was established. The analysis of this and other cases broadens the understanding of the etiopathogenic factors involved and aids the recognition of multiple salivary duct cyst lesions in minor salivary glands in clinical and laboratory practice.


O cisto do ducto salivar apresenta-se predominantemente como uma única lesão nas glândulas salivares maiores. A ocorrência de múltiplas lesões nas glândulas salivares menores é extremamente rara, com apenas três casos relatados na literatura. Este relato de caso apresenta um novo caso de múltiplos cistos do ducto salivar em glândulas salivares menores. Uma mulher de 62 anos procurou atendimento com queixa de aparecimento súbito de um nódulo doloroso no lábio superior. O exame intraoral revelou múltiplos nódulos submucosos, móveis e ligeiramente dolorosos, que ocasionalmente drenavam muco através de aberturas dilatadas, localizados nas mucosas labial e bucal. Com base nas hipóteses clínicas de cisto do ducto salivar, cistadenoma e adenoma canalicular, foi realizada uma biópsia excisional do nódulo referido sob anestesia local. A análise microscópica revelou múltiplas lesões císticas revestidas por epitélio cuboide, escamoso ou colunar pseudostratificado, com lúmen preenchido por material mucoso. Através da correlação destes achados com as características clínicas, o diagnóstico final de múltiplos cistos do ducto salivar intraoral foi estabelecido. A análise deste e de outros casos amplia a compreensão dos fatores etiopatogénicos envolvidos e auxilia no reconhecimento das lesões múltiplas do cisto do ducto salivar em glândulas salivares menores na prática clínica e laboratorial.


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