Cases reported "Carcinoma, Acinar Cell"

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1/65. Acinic cell carcinoma of the lung with metastasis to lymph nodes.

    A 64-year-old man presented with an asymptomatic left lower lobe mass. At bronchoscopy there was a tumor in the superior segment. biopsy revealed an acinic cell carcinoma. There was no evidence of salivary gland or other site of origin. Lobectomy and lymph node staging showed involvement of interlobar (N1) nodes, while higher stations were benign. The patient remains well 20 months postoperatively. This is the only instance of primary pulmonary acinic cell carcinoma with lymph node metastasis among 15 cases in the literature. We review the clinical features, histology, and treatment of the reported cases.
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2/65. Unilateral aneuploid dedifferentiated acinic cell carcinoma associated with bilateral-low grade diploid acinic cell carcinoma of the parotid gland.

    A dedifferentiated acinic cell carcinoma (AciCC) of the right parotid gland with lymph node metastases occurred in a 36-year-old woman. The tumour was associated with a bilateral well-differentiated AciCC. The two components of this tumour had different (high and low) proliferative activity measured by Mib-1 and different (aneuploid and diploid) dna content. Despite the presence of a high-grade component, TP53 mutations, microsatellite instability (MSI) and/or loss of heterozygosity (LOH) at the p53 locus were not detected. Although the follow-up of the patient is very short, the aggressiveness of the tumour is shown by a recurrence in the right parotid within 4 months and by the rapid development of regional metastases.
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3/65. Familial occurrence of acinic cell carcinoma of the parotid gland.

    We report the familial occurrence of acinic cell carcinoma involving the parotid gland, the first such report of which we are aware. The familial occurrence of any salivary gland neoplasm is rare. Several reports are present in the literature, including pleomorphic adenoma, Warthin tumor, carcinoma of the submandibular gland, and malignant lymphoepithelial lesion. We report the case of a 35-year-old man who underwent excision of a left parotid gland acinic cell carcinoma. Eight years later, his daughter presented at the age of 16 years with a nontender parotid gland mass that was excised and found also to be acinic cell carcinoma. The histologic features of both neoplasms were typical of acinic cell carcinoma. While this may represent a coincidental event, the possibility that this familial occurrence is a manifestation of common genetic or environmental risk cannot be excluded.
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4/65. Synchronous ipsilateral sebaceous lymphadenoma and acinic cell adenocarcinoma of the parotid gland.

    The synchronous or metachronous occurrence of 2 tumors of the salivary glands in a patient is rare. These tumors are usually benign and of the same histologic type. Here we report a 78-year-old woman who developed a sebaceous lymphadenoma and an acinic cell adenocarcinoma simultaneously in the left parotid gland. To our knowledge, this combination of neoplasms has not been reported before.
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keywords = gland
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5/65. Late recurrence of acinic cell carcinoma of the parotid gland.

    Acinic cell carcinoma of the salivary glands is a rare cancer representing a low grade malignancy. The recurrence of a tumor is sometimes encountered, usually within 5 years of initial operation. We describe an unusual recurrence after a long interval following primary surgery. In 1987, a 60-year-old woman underwent excision of a mass in the superficial lobe of the right parotid gland under the preoperative diagnosis of a benign tumor. A histologic diagnosis of acinic cell carcinoma was made by examining sections from the resected mass. The patient noted several small nodules in the right parotid region in 1995, but she did not visit our clinic until 1998 when tenderness developed. A locally recurrent tumor and cervical lymph nodes containing metastases were resected and postoperative radiotherapy was given 11 years after the first operation. At least 10 years of follow-up may be necessary for patients with acinic cell carcinoma because of slow-tumor growth.
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ranking = 6
keywords = gland
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6/65. Vallecular acinic cell carcinoma in a 9-year-old girl: report of an unusual case.

    An unusual case of acinic cell tumour of the vallecula is presented. Acinic cell carcinoma occurs usually in the major salivary glands. Minor salivary gland location is unusual and vallecular origin exceptional. This peculiar histologic tumour should now be classified as an low grade carcinoma and adequate treatment has to be initiated. The patient, a 9-year-old girl, had undergone a suprahyoid access for total tumor removal with a bilateral neck exploration. Postsurgical radiotherapy has to be done in case with perineural invasion, invaded margins, node invasion or high grade tumor. The clinical and histopathological findings are discussed in the light of the literature.
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ranking = 2
keywords = gland
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7/65. Accessory parotid gland masses.

    Three cases of accessory parotid gland lesions are reported. The literature concerning accessory gland disease and its diagnosis and treatment is reviewed.
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8/65. Acinic cell carcinoma of the oral cavity.

    A rare case of acinic cell carcinoma of minor salivary gland origin within the oral cavity is reported in a 62-year-old woman. These tumors most commonly arise in the parotid gland and follow an insidious course requiring long-term follow-up. The gross and histologic features of the patient's tumor include pseudoencapsulation, mixed solid and acinar architecture, microcyst formation, and the presence of conspicuous diastase-fast and PAS-positive cytoplasmic granules, characteristic of lesions that have been called acinic cell carcinoma by a variety of authors. Surgical excision is the treatment of choice. However, following an incisional biopsy, the patient refused further surgical treatment and has remained clinically disease-free three years postoperatively.
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9/65. Acinic cell carcinoma originating in the nasal septum.

    Acinic cell carcinoma represents approximately 2.5% to 4% of all salivary gland tumors and 13% of all malignant parotid tumors. The nasal septum is a rare site of an acinic cell carcinoma. We have treated such a tumor in a 47-year old man who had been asymptomatic for the past 1.5 year. This is the second reported case of acinic cell carcinoma at the nasal septum.
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ranking = 1
keywords = gland
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10/65. Papillary-cystic variant of acinic cell carcinoma of the salivary gland diagnosed by fine needle aspiration biopsy. A case report.

    BACKGROUND: Fine needle aspiration (FNA) biopsy is reliably used to classify most conditions involving the salivary glands. It is useful for establishing, or at least suggesting, the diagnosis in unusual cases or narrowing the differential diagnosis. CASE: A 25-year-old male presented with a slowly enlarging mass of the left parotid. FNA biopsy of the parotid gland was performed, and a diagnosis of papillary-cystic variant of acinic cell carcinoma was suggested. The patient underwent incomplete resection of the lesion, which was interpreted as acinic cell carcinoma. CONCLUSION: Papillary-cystic variant of acinic cell carcinoma is rarely seen, especially in young people. FNA biopsy is a useful diagnostic procedure that can help diagnose this relatively uncommon type of salivary gland neoplasm and guide its management.
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ranking = 7
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