Background: Parotid gland tumor is a quite common pathology in salivary gland tumor. The exact diagnosis for parotid gland tumors has an important significance because it will help to plan appropriate surgical strategies. Objective: To remark some characteristics of ultrasonographic image of the parotid gland tumors and evaluate the role of ultrasonography in diagnosis of the parotid gland tumors. Subject and methods: A cross-sectional, descriptive study was conducted on 24 patients with parotid gland tumors, operated on at the Department of Plastic and Maxilofacial Surgery of Hospital 103 and the Department of Odonto - Stomatology of Ha Dong General Hospital, Hanoi from January, 2007 to July, 2008. Results: The size of tumors was 2-4cm (58.33%), 21/24 of tumors were in superficial lobe areas. 46.66% of pleomorphic adenomas had a lobulated shape. 2/3 of Warthin\u2019s tumors had an oval shape. 79.17% of the benign lesions were well-defined. 87.5% of all tumors had echogenicity decreased. Almost equal percentages of Warthin\u2019s tumors were echogenicity decreased and structure in heterogeneous. Conclusion: Ultrasonography is a useful method in the diagnosis of the parotid gland tumors, helping to determine clearly the natural basis of some tumors and contributing to early screening for acute parotid gland tumors.
Parotid gland tumor ; ultrasonography

OBJECTIVE: To compare the accuracy of ultrasound (US)-guided and non-US-guided botulinum toxin (BTX) injection into the salivary glands (parotid and submandibular glands) of cadavers. METHODS: Two rehabilitation physician injected dye into three sites in the salivary glands (two sites in the parotid gland and one site in the submandibular gland) on one side of each cadaver (one was injected on the right side, while the other was injected on the left side), using either a non-US-guided injection procedure based on superficial landmarks or a US-guided procedure. Orange dye was used for the US-guided procedure, and green dye was used for the blind procedure. Two physicians uninvolved with the injection procedures and who were blinded to the method of injection dissected the cadavers to identify whether the dye was accurately injected into each target site. RESULTS: The accuracies of the blind and US-guided injections into the parotid gland were 79.17% and 95.83%, respectively. In the submandibular gland, the accuracies of the blind and US-guided injections were 50.00% and 91.67%, respectively. The difference in accuracy between the two procedures was statistically significant only in the submandibular gland (p=0.025). There were no significant differences in the accuracy of US-guided and non-US-guided injections between the two physicians for the two sites in the parotid gland (p=0.278 and p=0.146, respectively). CONCLUSION: US-guided BTX injection into the submandibular gland offers significantly greater accuracy over blind injection. For the treatment of drooling by injecting BTX into the submandibular gland, clinicians should consider using US guidance for improved accuracy.
Botulinum Toxins* ; Cadaver* ; Citrus sinensis ; Methods ; Parotid Gland ; Rehabilitation ; Salivary Glands* ; Sialorrhea ; Submandibular Gland ; Ultrasonography

A dermoid cyst of the head and neck region is a relatively infrequent occurrence and accounts for only 6.9% of all dermoid cysts. Its anatomical distribution is the orbit, floor of the mouth, other midline and nose in the order of frequency. A dermoid cyst of the parotid gland is extremely rare, and due to this and the absence of pathognomonic findings, it is often difficult to diagnose preoperatively. Thus thorough and careful examination including ultrasonic study is needed to evaluate this lesion. It must be differentiated from malignant tumors and other cystic lesions. Dermoid cysts usually recur after simple excision, so it is mandatory to excise it completely with a parotidectomy. This paper presents two cases of parotid gland dermoid cyst with a brief review of the literature.
Adult ; Case Report ; Dermoid Cyst/*diagnosis/surgery ; Human ; Male ; Parotid Gland/pathology/radiography ; Parotid Neoplasms/*diagnosis/surgery ; Sialography ; Ultrasonography

We report two cases of lipoma of the parotid gland which present as a non-tender, freely movable and intraparotid mass. Lipomas are common soft tissue neoplasms but found very rarely in the parotid gland, and so are often not considered in the initial differential diagnosis of parotid gland tumor. We believe that these tumors are cured by simple excision, and thus superficial parotidectomy is enough for treatment.
Adult ; Aged ; Case Report ; Female ; Human ; Lipoma/*pathology/radiography/ultrasonography ; Male ; Parotid Gland/*pathology/radiography/ultrasonography ; Parotid Neoplasms/*pathology/radiography/ultrasonography ; Tomography, X-Ray Computed

We report two cases of lipoma of the parotid gland which present as a non-tender, freely movable and intraparotid mass. Lipomas are common soft tissue neoplasms but found very rarely in the parotid gland, and so are often not considered in the initial differential diagnosis of parotid gland tumor. We believe that these tumors are cured by simple excision, and thus superficial parotidectomy is enough for treatment.
Adult ; Aged ; Case Report ; Female ; Human ; Lipoma/*pathology/radiography/ultrasonography ; Male ; Parotid Gland/*pathology/radiography/ultrasonography ; Parotid Neoplasms/*pathology/radiography/ultrasonography ; Tomography, X-Ray Computed

No abstract available.
Diagnosis, Differential ; Female ; Humans ; Middle Aged ; Neck/diagnostic imaging ; Parotid Gland/*pathology ; Parotid Neoplasms/diagnosis/diagnostic imaging/pathology ; Sarcoidosis/*diagnosis/diagnostic imaging ; Tomography, X-Ray Computed ; Ultrasonography

Tuberculous parotitis is a rare disease even in the endemic areas. Clinically it is usually presented as a slowly growing local mass over the parotid area, mimicking a benign neoplasm of parotid gland. Also it rarely accompanies respiratory or systemic symptoms such as fever, night sweat, or weight loss, which make the preoperative diagnosis of tuberculous parotitis even more difficult. Preoperative diagnostic studies such as sialography, ultrasonography or CT scan also provides nonspecific findings that have little contribution to the diagnosis. Less than 100 cases of tuberculous parotitis has been reported in the worldwide literatures and moreover, cases that were diagnosed tuberculous parotitis before pathologic confirmation are hard to find. In our department, superficial parotidectomy was performed on a patient with a mass over her right parotid area, and the mass was pathologically diagnosed tuberculous parotitis.
Diagnosis ; Fever ; Humans ; Parotid Gland ; Parotitis* ; Rare Diseases ; Sialography ; Sweat ; Tomography, X-Ray Computed ; Tuberculosis ; Ultrasonography ; Weight Loss

Tuberculous parotitis is a rare disease even in the endemic areas. Clinically it is usually presented as a slowly growing local mass over the parotid area, mimicking a benign neoplasm of parotid gland. Also it rarely accompanies respiratory or systemic symptoms such as fever, night sweat, or weight loss, which make the preoperative diagnosis of tuberculous parotitis even more difficult. Preoperative diagnostic studies such as sialography, ultrasonography or CT scan also provides nonspecific findings that have little contribution to the diagnosis. Less than 100 cases of tuberculous parotitis has been reported in the worldwide literatures and moreover, cases that were diagnosed tuberculous parotitis before pathologic confirmation are hard to find. In our department, superficial parotidectomy was performed on a patient with a mass over her right parotid area, and the mass was pathologically diagnosed tuberculous parotitis.
Diagnosis ; Fever ; Humans ; Parotid Gland ; Parotitis* ; Rare Diseases ; Sialography ; Sweat ; Tomography, X-Ray Computed ; Tuberculosis ; Ultrasonography ; Weight Loss

The formation of the salivary glands begins between the 6th and the 12th week of development of the embryo. The submandibular gland develops from the endoderm of the floor of the mouth and begins forming later than the parotid gland. The congenital absence of major salivary glands is uncommon; aplasia of both submadibular glands, in particular, is extremely rare. It's major symptoms are dryness of the mouth, dysphagia and dental caries. The diagnosis of aplasia of the salivary glands should be achieved by imaging methods such as technetium-99m pertechnetate radionuclide scan, ultrasonography, sialography or computerized tomography. We report with relative literature on the case of a 50 year old woman suffering from dryness of the mouth due to aplasia of both submandibular glands.
Deglutition Disorders ; Dental Caries ; Diagnosis ; Embryonic Structures ; Endoderm ; Female ; Humans ; Middle Aged ; Mouth ; Parotid Gland ; Salivary Glands ; Sialography ; Sodium Pertechnetate Tc 99m ; Submandibular Gland* ; Ultrasonography

L-asparaginase is an essential chemotherapeutic agent in the treatment of the acute lymphoblastic leukemia or non-Hodgkin lymphoma with its unique mechanism of action. It has many toxic effects involving multiple organs. The acute parotitis associated with L-asparaginase has been rarely reported. In this report, acute parotitis developed in the 4 acute lymphoblastic leukemia patients who were treated with the induction chemotherapy regimen including L-asparaginase. Mumps was excluded in 3 patients and the evidence of coexisting pancreatitis was observed in 2 patients. The parotid ultrasonography revealed diffuse enlargement in all patients. The symptoms were spontaneously resolved with no specific treatment, and in all cases there was no recurrence of the same disease with later maintenance chemotherapy including L-asparaginase. The possible mechanism of the acute parotitis is not yet clearly understood. But considering its histologic similarity with the pancreas, the depletion of L-asparagine may damage the acinar cells of parotid gland. The acute parotitis is not a well-known side effect of L-asparaginase but it needs to be promptly recognized in order to consider the discontinuation of the L-asparaginase and to exclude any viral infection requiring isolation.
Acinar Cells ; Asparagine ; Humans ; Induction Chemotherapy* ; Lymphoma, Non-Hodgkin ; Maintenance Chemotherapy ; Mumps ; Pancreas ; Pancreatitis ; Parotid Gland ; Parotitis* ; Precursor Cell Lymphoblastic Leukemia-Lymphoma* ; Recurrence ; Ultrasonography