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Stomatologija 2009; 11 (1): 37-40 465 KB

Accessory parotid gland carcinoma ex pleomorphic adenoma.
Case study diagnosed by fine needle aspiration

D. Tamiolakis¹, T. S. Chimona², G. Georgiou¹, E. Proimos², S. Nikolaidou1, G. Perogamvrakis², C. E. Papadakis²

Summary

Objective. The accessory parotid gland is salivary tissue separated from the main parotid gland and lying on masseter muscle. It has secondary duct empting into the Stensen's duct. The accessory parotid gland exists in 21-61% of individuals. However, the appearance of an accessory parotid tumor is rare, with a reported frequency of 1-7.7% of all parotid gland tumors. Carcinoma ex pleomorphic adenoma arises from a pre-existing benign mixed tumor.

Most of these tumors will have malignant epithelial component, but not malignant stromal component. Reports of Fine Needle Aspiration Cytological (FNAC) diagnosis of malignant mixed tumor are uncommon and have been limited to cases arising in the parotid. We report a case of carcinoma ex pleomorphic adenoma of the accessory lobe of the parotid, and address the cytopathology features and pitfalls of this condition.

Case. A 73 aged female presented with a right nontender midcheek mass.

The lesion had been present 18 months, with a recent increase in size. FNA was performed and the smears demonstrated features indicative of pleomorphic adenoma admixed with findings indicative of a poorly differentiated carcinoma.

Conclusion. FNAC can accurately diagnose carcinoma ex pleomorphic adenoma when strongly fixed requirements are implemented.

Key words: accessory parotid gland carcinoma, pleomorphic adenoma, fine needle aspiration cytological diagnostics.

Received: 11 02 2008

Accepted for publishing: 26 03 2009

¹Department of Cytopathology, General Hospital of Chania, Crete, Greece
²Department of Ear-Nose-and Throat Surgery, General Hospital of Chania, Crete, Greece

Address correspondence to Dr. Tamiolakis Dimitrios, Department of Cytopathology, General Hospital of Chania, Crete, Greece

E-mail address: cyto@chaniahospital.gr



	Baltic Dental and Maxillofacial Journal

March, 2009, Vol. 11, No. 1 CONTENTS ABSTRACTS The First International Baltic Ossoeintegration Academy (BOA) Congress "Thoughtful Look to the Nowadays Problems in Oral Implantology. 12-13 June 2009, Kaunas, Lithuania REVIEWS Attitudes of general dental practitioners towards endodontic standarts and adoption of new technology: Literature review Vytaute Peciuliene, Rasmute Maneliene, Saulius Drukteinis, Jurate Rimkuviene 11-14 SCIENTIFIC ARTICLES Three-dimensional assessment of musculoskeletal features in Class II and Class III patients Katrina Zepa, Ilga Urtane, Zane Krisjane, Gaida Krumina 15-20 In vitro study of microbial leakage in roots filled with EndoREZ sealer/EndoREZ® Points and AH Plus sealer/conventional gutta-percha points Saulius Drukteinis, Vytaute Peciuliene, Rasmute Maneliene, Ruta Bendinskaite 21-25 REVIEWS Occlusal features and masticatory muscles activity. A review of electromyographic studies Francesca Trovato, Bruno Orlando, Mario Bosco 26-31 SCIENTIFIC ARTICLES Three-dimensional evaluation of TMJ parameters in Class II and Class III patients Zane Krisjane, Ilga Urtane, Gaida Krumina, Katrina Zepa 32-36 CLINICAL CASE REPORTS Accessory parotid gland carcinoma ex pleomorphic adenoma. Case study diagnosed by fine needle aspiration D. Tamiolakis, T. S. Chimona, G. Georgiou, E. Proimos, S. Nikolaidou, G. Perogamvrakis, C. E. Papadakis 37-40 © 2009 Stomatologija		Stomatologija 2009; 11 (1): 37-40 465 KB Accessory parotid gland carcinoma ex pleomorphic adenoma. Case study diagnosed by fine needle aspiration D. Tamiolakis¹, T. S. Chimona², G. Georgiou¹, E. Proimos², S. Nikolaidou1, G. Perogamvrakis², C. E. Papadakis² Summary Objective. The accessory parotid gland is salivary tissue separated from the main parotid gland and lying on masseter muscle. It has secondary duct empting into the Stensen's duct. The accessory parotid gland exists in 21-61% of individuals. However, the appearance of an accessory parotid tumor is rare, with a reported frequency of 1-7.7% of all parotid gland tumors. Carcinoma ex pleomorphic adenoma arises from a pre-existing benign mixed tumor. Most of these tumors will have malignant epithelial component, but not malignant stromal component. Reports of Fine Needle Aspiration Cytological (FNAC) diagnosis of malignant mixed tumor are uncommon and have been limited to cases arising in the parotid. We report a case of carcinoma ex pleomorphic adenoma of the accessory lobe of the parotid, and address the cytopathology features and pitfalls of this condition. Case. A 73 aged female presented with a right nontender midcheek mass. The lesion had been present 18 months, with a recent increase in size. FNA was performed and the smears demonstrated features indicative of pleomorphic adenoma admixed with findings indicative of a poorly differentiated carcinoma. Conclusion. FNAC can accurately diagnose carcinoma ex pleomorphic adenoma when strongly fixed requirements are implemented. Key words: accessory parotid gland carcinoma, pleomorphic adenoma, fine needle aspiration cytological diagnostics. Received: 11 02 2008 Accepted for publishing: 26 03 2009 ¹Department of Cytopathology, General Hospital of Chania, Crete, Greece ²Department of Ear-Nose-and Throat Surgery, General Hospital of Chania, Crete, Greece Address correspondence to Dr. Tamiolakis Dimitrios, Department of Cytopathology, General Hospital of Chania, Crete, Greece E-mail address: cyto@chaniahospital.gr