Parotid gland with double duct: an anatomic variation description/ Glandula parotida con doble conducto: descripcion de una variacion anatomica

• Published in: International journal of morphology Vol. 27; no. 1; p. 129
• Main Authors: Fernandes, Atson Carlos de Souza, Lima, Rafael Guimaraes, Rossi, Marcelle Alvarez, Aguiar, Marcio Cajazeira
• Format: Journal Article
• Language: Spanish
• Published: Universidad de La Frontera, Facultad de Medicina 01-03-2009
• ISSN: 0717-9367

The parotid is the largest salivary gland in humans producing an essentially serous secretion, which normally reaches the oral cavity through a sole duct (the parotid duct) after the latter making its way through the buccinator muscle to reach the mucosa lining the mouth at the level of the cheek. The present study reports on a rare case of double parotid duct found during the dissection the right side of the face of a cadaver of a 46-year-old male individual. The superior (D1) and inferior (D2) ducts were 26.49 mm and 37.25 mm long, respectively. Based on the diameter of both ducts (D1 and D2) taken in the posterior (3.05 mm and 2.84 mm, respectively) and mid (2.84 mm and 2.68 mm, respectively) thirds, as well as on the histological findings, both ducts were considered to be main parotid ducts. These two ducts merged at the level of the anterior third forming one sole opening into the oral cavity. The data hereby reported are relevant to the various clinical and surgical procedures involving the parotid gland. KEY WORDS: Parotid gland; Parotid duct; Double duct; Anatomical variation; Stensen duct. La parotida es la glandula salival mas grande presente en el hombre y su producto de secrecion, basicamente seroso, es normalmente dirigido hasta la cavidad oral, a traves de un unico canal parotideo que, luego de perforar el musculo buccinador, desemboca en la mucosa de la mejilla. Este trabajo muestra un caso raro de doble canal parotideo hallado durante la disecccion de un cadaver de sexo masculino, de 46 anos de edad, en el lado derecho del rostro. Los canales superior (D1) e inferior (D2), presentaron una longitud de 26,49 mm y 37,25 mm, respectivamente. En base a los diametros presentados por los canales en los tercios posterior (D1 3,05mm; D2 2,84 mm) y medio (D1 2,84mm; D2 2,68 mm) y de acuerdo con los hallazgos histologicos, ambos fueron considerados principales. En el tercio mas anterior los canales se fusionaron, presentando una unica apertura en la cavidad oral. Las informaciones presentadas en este documento son relevantes para diferentes procedimientos clinicos y quirurgicos que tengan relacion con la glandula parotida. PALABRAS CLAVE: Glandula parotida; Canal parotideo; Doble canal; Variaciones; Conducto de Stensen.