Cases reported "Parotid Neoplasms"

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1/180. leiomyosarcoma of the parotid gland: a case report and review of the literature.

    BACKGROUND: A primary leiomyosarcoma of the parotid gland has been reported only three times in the English literature. This type of tumor represents an extremely rare group of salivary gland neoplasm. methods: A 44 year old man was initially seen with a 5 cm right parotid mass which was resected with a total parotidectomy, preserving the facial nerve. The patient had no palpable cervical lymph nodes. RESULTS: The majority of the specimen was made up of a relatively well demarcated tumor 5 cm in diameter. The tumor was noted to contain moderate to poorly differentiated primary leiomyosarcoma of the parotid. CONCLUSIONS: A primary leiomyosarcoma of the parotid gland is an extremely rare existing entity. A review of the literature reveals that primary leiomyosarcoma and other sarcomas of the major salivary glands may share similar histogenesis and biologic behavior with their soft tissue counterparts.
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2/180. The place of irradiation in the treatment of malignant tumors of the salivary glands.

    1. Radiation therapy is not indicated after surgical removal with adequate margins of low-grade tumor. 2. Radiation therapy is indicated with a) Inadequate surgical margins in low-grade tumors b) All high-grade tumors c) All recurrent malignant tumors 3. Irradiation of nerve pathways is indicated with demonstrated nerve and perineural invasion and/or with adenoicystic carcinoma. 4. Irradiation of the entire ipsilateral neck is indicated a) Wtih high-grade tumors unless radical neck dissection shows negative nodes b) In the place of radical neck dissection.
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3/180. Mucoepidermoid carcinoma arising in the accessory parotid gland.

    A rare case of a 9-year-old female with mucoepidermoid carcinoma arising in the accessory parotid gland is reported. She had complained of a painless and round mass of the left cheek for a duration of 14 months. sialography, ultrasonography, CT scan and MRI were performed preoperatively. sialography revealed a small duct separating from the Stensen's duct. CT and MRI showed that the tumor with smooth outline was lying on the masseter muscle and detached from the main parotid gland. The preoperative diagnosis was an accessory parotid gland tumor. The tumor was removed without facial nerve injury via standard parotidectomy incision. The tumor was composed of mucous and epidermoid cells. The pathological diagnosis was low-grade mucoepidermoid carcinoma.
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4/180. Hybrid carcinomas of salivary glands. Report of 4 cases and review of the literature.

    OBJECTIVE: To report 4 cases of hybrid carcinoma and to review the literature on these rare neoplasms of the salivary gland. methods: hematoxylin-eosin-stained, formalin-fixed, paraffin-embedded tissue sections from 3 parotid tumors and 1 palate tumor were examined. RESULTS: The cases were classified as adenoid cystic and mucoepidermoid carcinoma, adenoid cystic and epithelial-myoepithelial carcinoma, epithelial-myoepithelial and salivary duct carcinoma, and adenoid cystic and salivary duct carcinoma. All patients were men, 28 to 71 years old; 3 patients presented with parotid mass, and 1 patient presented with palatal mass. One patient presented with facial nerve paralysis and pain. The soft palatal tumor was a slowly growing mass with maxillary sinus involvement at the time of the diagnosis. All patients were treated with surgery and radiotherapy. CONCLUSIONS: Correct identification of 2 or more neoplastic entities will help assess the aggressiveness and metastatic potential of the tumor and influence the clinical course and treatment.
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5/180. Parotid carcinoma as a second malignancy after treatment of childhood acute lymphoblastic leukemia.

    The occurrence of second malignant neoplasms (SMN) in children who survive their primary malignancy is a major cause for concern. Two children with diagnoses of intermediate-risk acute lymphoblastic leukemia (ALL) at 22 months and 2 years of age were treated with multiagent chemotherapy and prophylactic cranial irradiation. They experienced painless parotid swelling 6 and 7 years after successful treatment of the ALL. The patients underwent total parotidectomy, and a diagnosis of mucoepidermoid carcinoma was made. Both patients experienced transient facial nerve paresis. The incidence of SMN in children successfully treated for primary malignancies is 3% to 12%. Salivary gland tumors are being increasingly described in this setting. Long-term follow-up for survivors of childhood ALL is recommended with prompt assessment and resection of parotid swellings, particularly in children who have received cranial irradiation.
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6/180. The changing faces of a parotid mass.

    The development of a neurofibroma in the temporal and parotid regions of the facial nerve is rare. We report a case occurring in a 32-year-old male, where the initial presentation was a parotid mass. Cytologically this was initially thought to be a pleomorphic adenoma. However, the diagnosis was then changed to a schwannoma and finally a neurofibroma after complete excision of the lesion. The case illustrates how fine needle aspiration cytology under ultrasound guidance, and even histological examination of an incision biopsy can sometimes fail to give the correct diagnosis. In this case magnetic resonance imaging was used to help plan definitive surgery.
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7/180. Bilateral mucosa-associated lymphoid tissue lymphoma of the parotid gland.

    Mucosa-associated lymphoid tissue (MALT) tumors of the parotid gland are extranodal non-Hodgkin lymphomas. Stage I and II MALT tumors are usually treated with surgery or radiotherapy. Bilateral MALT-derived non-Hodgkin lymphoma of the parotid glands is rare, and optimal treatment is debatable. Two patients presented at the otorhinolaryngology department of the Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, germany. The treatment strategy that was used in case 1 was also successfully used in case 2. A precise diagnosis could not be made by either fine-needle biopsy or intraoperative frozen section biopsy; it was achieved with open biopsy. Surgery and/or radiotherapy proved to be effective. There was no recurrence of disease in either case. The advantages of surgery are complete resection of the tumor and absence of xerostomia and mucositis, which are caused by irradiation. radiotherapy does not produce a scar or an indentation at the parotid region, however, and results in a better cosmetic appearance. Therefore, we recommend open biopsy with facial nerve monitoring and subsequent irradiation in cases in which bilateral prominence of the parotid glands and suspicion of a MALT lymphoma are both present.
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8/180. Intraparotid facial nerve schwannoma.

    Intraparotid facial nerve schwannoma are uncommon. Preoperative diagnosis of parotid tumour as schwannoma is difficult when facial nerve function is normal. A rare case of solitary schwannoma involving the upper branch of the facial nerve is described and the literature on the subject is reviewed.
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9/180. Pleomorphic adenoma involving the stylomastoid foramen.

    A rare case of an intratemporal pleomorphic adenoma is presented and the management of such a tumour is discussed. Some anatomical aspects of the facial nerve, pertinent to the pathophysiology of facial paralysis are outlined. This case demonstrates that tumour extension into the temporal bone can be resected successfully at initial surgery with excellent facial nerve functional outcome. We advocate exploration of the fallopian canal to be carried out at primary surgery and be performed by a surgeon familiar with the surgical anatomy of the intratemporal segment of the facial nerve. This approach will reduce the risk of facial nerve injury and palsy both at surgery and subsequently.
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ranking = 4
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10/180. Sialoblastoma.

    Tumours of the salivary gland are very uncommon in children. We present a case of sialoblastoma, a very rare congenital salivary-gland tumour, initially recognised on antenatal ultrasound. After histological diagnosis, a superficial parotidectomy was performed at 21 days of age with preservation of the facial nerve. There is no recurrence at2 years.
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