Often women in 30s but any age; 90% occur in parotid gland (represent 60% of parotid tumors; 50% occur in tail, 25% in superficial lobe, 25%. Request PDF on ResearchGate | On Mar 1, , I. Navarro and others published Adenoma pleomorfo de lóbulo profundo de parótida. Se presenta el caso clínico de un paciente masculino de 69 años de edad que consulta por un tumor (Adenoma Pleomorfo) en la región.
|Published (Last):||2 January 2014|
|PDF File Size:||16.3 Mb|
|ePub File Size:||20.79 Mb|
|Price:||Free* [*Free Regsitration Required]|
El paciente no presenta trismus, disfagia o disnea. Long-term follow-up, both endoscopic and radiologic, to exclude malignancy is mandatory, even if the tumour appears to be clinically benign and resected completely.
Metastasizing pleomorphic adenoma arising in the soft palate. The tumor is not enveloped, but it is surrounded by a fibrous pseudocapsule of varying thickness.
Pleomorphic adenoma in nasal cavity: Pleomorphic adenoma of the palate: It is important to be aware of the paucity of presenting symptoms nasal obstruction and epistaxisas the lesion may not be recognized immediately.
Adeboma of a case. The incidence is even lower in the upper respiratory tract, such as the nasal cavity, maxillary sinus and nasopharynx 8 9. Pleomorphic adenoma is the most common benign neoplasm of salivary glands.
Carcinoma ductal sobre adenoma pleomorfo de parótida
Clusters of benign epithelial cells with blue myxoid matrix and tyrosine rich crystals. Pleomorphic adennoma is a common benign salivary gland neoplasm characterised by neoplastic proliferation of parenchymatous glandular cells along with myoepithelial components, having a malignant potentiality.
Pulmonary, hepatic and bone metastasis have also been reported Histologically, it is highly variable in appearance, even within individual tumors.
Epithelial structures displayed different solid, trabecular and cystic growth patterns Fig.
Overall, the mainstay of the treatment for salivary gland tumor is surgical resection. The American Journal of Surgery ; National Center for Biotechnology InformationU. It is usually mobile unless found in the palate and can cause atrophy of the mandibular ramus when located in the parotid gland.
Am J Clin Pathol ; Approaches include lateral rhinotomy 22 — 24trans-nasal or mid-facial degloving 13 — 18 and intra-nasal excision. Closure of palatal defects following excision of palatal pleomorphic adenomas. Histopathological analysis of the tumour showed a mixed epithelial and myxoid stromal appearance.
The intraoral examination showed a ovoid nodule, located in right posterior third of the hard palate, sessile base, soft consistency, a little paler than the adjacent mucosa, smooth surface, asymptomatic and unknown evolution Fig.
The tumor often displays characteristic chromosomal translocations between chromosomes 3 and 8.
Pleomorphic adenoma of the lateral nasal wall: case report
Classically it is biphasic and is characterized by an admixture of polygonal epithelial and spindle-shaped myoepithelial elements in a variable background stroma that may be mucoid, myxoid, cartilaginous or hyaline. Carcinoma ex-pleomorphic adenoma of the nasal septum with adenoid cystic and squamous carcinomatous differentiation. CS1 Romanian-language sources ro Infobox medical condition new.
A histopathologically confirmed case with adenoid cystic and squamous carcinomatous differentiation has been reported Areas of squamous metaplasia and epithelial pearls may be present. Histopathological elements of the PA include: Pleomorphic adenoma with predominant plasmocytoid myoepithelial cells: According to Stevenson 15remnants of the pleomrfo organ, an epithelium-lined duct in the cartilaginous nasal septum degenerated in early foetus, could be the reason for the appearance of these tumours in this particular region.
Addenoma gland malignant epithelial tumors Acinic cell carcinoma Mucoepidermoid carcinoma Adenoid cystic carcinoma Salivary duct carcinoma Epithelial-myoepithelial carcinoma Polymorphous low-grade adenocarcinoma Hyalinizing clear cell carcinoma. Accessed December 31st, Various theories have been proposed to adehoma this observation.