Osteoclastlike giant cell tumor of the salivary gland.
ABSTRACT Giant cell tumor of the salivary gland is extremely rare, with only 15 cases published in the English literature. The tumor characteristically contains a mixture of multinucleated giant cells, resembling osteoclasts of bone, and neoplastic mononuclear cells. In about half of the reported cases, there is an associated carcinomatous component. We are reporting an additional case of giant cell tumor of the parotid gland that was initially misinterpreted as an extraosseous osteosarcoma in the biopsy specimen. The histologic and immunohistochemical findings as well as a review of the literature with discussion of the histogenesis of this unusual neoplasm are presented.
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- "Primary GCTPs were first described by Eusebi et al in 1984 (4), however, due to their rarity, there is an absence of literature that has analysed GCTP and all published material has been case reports. A summary of fifteen case reports, located using PubMed in a search of data up to May 2012, are presented in Table I(4–13). The most common clinical presentation of a GCTP was a non-tender, growing mass over the preauricular area followed by swelling of the parotid gland. "
ABSTRACT: A giant cell tumour (GCT) is a benign tumour that commonly arises in the distal end of the long bones. Extraosseous GCTs have been reported in a number of organs, but it is rare for a GCT to present in the parotid gland. Therefore, primary GCTs of the parotid gland (GCTPs) are extremely rare. Although GCTPs have been identified as benign soft-tissue tumours, they have a highly malignant potential and poor prognosis. In the present case, we report a 58-year-old male patient presenting with non-tender mass over the left preauricular area for 11 months. The final pathology report revealed a rare case of a GCTP that was treated by parotidectomy and adjuvant radiation therapy. The patient had no recurrence after 2 years of follow-up.Oncology letters 09/2013; 6(3):829-832. DOI:10.3892/ol.2013.1462 · 0.99 Impact Factor
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ABSTRACT: The giant cell tumor of the salivary gland is very rare, and 20 cases have been reported in the English-language literature. We report an additional case. A 57-year old man had noticed a mass in the right parotid area for several weeks. The diagnosis using aspiration cytology was a giant cell tumor possibly with a carcinomatous component. Superficial parotidectomy was carried out. The resected parotid gland contained a 1.8 cm-sized well-circumscribed brownish tumor. Histologically the tumor consisted of evenly distributed osteoclast-like giant cells, mononuclear cells and two small foci of a carcinomatous component. The osteoclast-like giant cells and mononuclear cells were positive for vimentin and CD68, and the carcinomatous component was positive for cytokeratin and epithelial membrane antigen. There was no metastatic lesion in the cervical lymph nodes. We believe this is the first case in Korea of an osteoclast-like giant cell tumor of the parotid gland.06/2012; 46(3):297-301. DOI:10.4132/KoreanJPathol.2012.46.3.297
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ABSTRACT: The expression of microRNA-125b (miR-125b) has been investigated in many human cancers. It has been demonstrated to be downregulated in certain types of cancer, such as bladder cancer, thyroid anaplastic carcinomas, squamous cell carcinoma of the tongue, hepatocellular carcinoma, ovarian and breast cancer. In the present study, we examined the effects of miR-125b on bladder cancer cell migration and invasion. Following transfection of miR-125b, the expression of miR-125b was analyzed in T24 and EJ bladder cancer cells. Additionally, cell migration, cell invasion and luciferase assays, as well as western blot analysis were conducted in the bladder cancer cells. In this study, we demonstrated that miR-125b inhibited cell migration and invasion in T24 and EJ cells. We also provided the first evidence that miR-125b may directly target matrix metalloproteinase 13 (MMP13) in bladder cancer. Our study provided evidence that miR-125b suppresses cell migration and invasion by targeting MMP13 in bladder cancer cell lines. These results suggested that miR-125b could be used for the development of new molecular markers and therapeutic approaches to inhibit bladder cancer metastasis.Oncology letters 03/2013; 5(3):829-834. DOI:10.3892/ol.2013.1123 · 0.99 Impact Factor