11/41. Histopathologic and immunohistochemical study in one case of cystadenoma of parotid gland becoming malignant.cystadenoma and cystadenocarcinoma of the salivary glands are rare tumors, approximately half of cases being diagnosed at the level of parotid. The studied tumor associated both benign and malign zones, with deep infiltrating character in the adjacent structures. In both areas the growing pattern was predominantly cystic and papillary, and the proliferated neoplastic cells were majority cubical or columnar, with low grade of nuclear pleomorphism in the becoming malign areas, discordant with the infiltrative character of the neoplasm. Immunohistochemically, we investigated the tumor with AE1-AE3, CEA, SMA, S-100 and PCNA.- - - - - - - - - - ranking = 1keywords = cystadenoma (Clic here for more details about this article) |
12/41. A trial for histopathological subclassification of papillary cystadenoma lymphomatosum by 99Tcm-pertechnetate in a patient with multiple bilateral lesions of the parotid glands.OBJECTIVES: The purpose of this report was to evaluate the possibility of subclassification of papillary cystadenoma lymphomatosum (PCL) with 99Tc(m)-pertechnetate. methods: A patient with multiple bilateral PCLs in the parotid glands was examined by using 99Tc(m)-pertechnetate. RESULTS: All PCLs of the present case, which were diagnosed as the subtype-II histopathologically, showed similar radioactive indexes in scintigraphy (the mean radioactive index = 3.62), although tumours were different in size. The mean radioactive index corresponded well with that from four cases of subtype-II of our previous report (the mean radioactive index = 3.84). CONCLUSIONS: The results of the present report suggest a possibility of histopathological subclassification of PCLs into subtypes by 99Tc(m)-pertechnetate scintigraphy.- - - - - - - - - - ranking = 7436.9417118734keywords = cystadenoma lymphomatosum, lymphomatosum, cystadenoma (Clic here for more details about this article) |
13/41. Malignancy of a cystadenolymphoma of the parotid gland.The authors describe malignant degeneration of the epithelial component of a cystadenolymphoma (CAL) of the parotid gland in a 79-year-old man. This development of carcinoma in CAL is a very rare occurrence, with only eight cases described thus far in the literature.- - - - - - - - - - ranking = 2659.2911726297keywords = adenolymphoma (Clic here for more details about this article) |
14/41. Papillary cystadenoma lymphomatosum: case report and review of literature.Papillary cystadenoma Lymphomatosum or Warthin's tumour is a unique neoplasm arising almost exclusively in the parotid salivary gland and is composed of oncocytic epithelium with a prominent lymphoid infiltrate. The tumor is usually asymptomatic and may be associated with varying degrees of pain not necessarily an indication of malignant transformation in the tumour. The tumour is managed easily by surgical excision. This article presents a typical case arising in the right parotid gland of a 73-year-old male with review of literature of this rare tumour.- - - - - - - - - - ranking = 5949.5533694987keywords = cystadenoma lymphomatosum, lymphomatosum, cystadenoma (Clic here for more details about this article) |
15/41. Unilateral multiple tumours of the parotid gland.The occurrence of two morphologically distinct tumors in a single parotid gland is rare. Pathologic examination of a unilateral parotid mass removed from a 63-year-old male revealed the presence of a benign mixed tumor and an adenolymphoma. No other examples of this relationship were encountered in the literature.- - - - - - - - - - ranking = 531.85823452594keywords = adenolymphoma (Clic here for more details about this article) |
16/41. Bilateral papillary cystadenoma lymphomatosum of the parotid gland without accumulation of technetium 99m pertechnetate: report of a case and review of the literature.An unusual case of bilateral papillary cystadenoma lymphomatosum of the parotid with multiple lesions showing no active uptake of 99mTc pertechnetate is presented. Similar cases showing no accumulation of radionuclide are reviewed.- - - - - - - - - - ranking = 7436.9417118734keywords = cystadenoma lymphomatosum, lymphomatosum, cystadenoma (Clic here for more details about this article) |
17/41. Unilateral multicentric Warthin's tumors.Papillary cystadenoma lymphomatosum, or Warthin's tumor, is known to have a high rate of multicentricity. An incidence of 5-14% is suggested by the literature. We present a female patient with three discrete masses noted in the superficial lobe of the parotid gland at the time of surgical resection. The epidemiology, histology and pathophysiology of Warthin's tumor is discussed and the need for adequate surgical resection is emphasized.- - - - - - - - - - ranking = 1487.3883423747keywords = cystadenoma lymphomatosum, lymphomatosum, cystadenoma (Clic here for more details about this article) |
18/41. Malignant adenolymphoma of the parotid gland: report of carcinomatous transformation.Malignant transformation of an adenolymphoma (Warthin's tumour) is a rare event. This paper presents a case of carcinoma arising in an adenolymphoma of the parotid gland.- - - - - - - - - - ranking = 3191.1494071556keywords = adenolymphoma (Clic here for more details about this article) |
19/41. A human adenolymphoma showing the chromosomal aberrations del (7)(p12p14-15) and t(11;19)(q21;p12-13).A clearly benign parotid tumor, an adenolymphoma, was studied cytogenetically using short-term cultured material. The first preparation showed only a normal stemline. The two subsequent preparations were both characterized by a pseudodiploid stemline with the karyotype 46,XY,del(7) (p12p14-15), t(11;19) (q21;p12-13). The 11;19 translocation was identical to that characterizing the abnormal stemline of the only previously studied case. These suggestive observations give rise to several questions, in particular whether or not all adenolymphomas contain cells with this specific reciprocal translocation and, in cases with the translocation, its implications at the molecular level.- - - - - - - - - - ranking = 3191.1494071556keywords = adenolymphoma (Clic here for more details about this article) |
20/41. Synchronous tumours of the parotid gland with different histology.A case is reported where a cystic basal cell adenoma was found synchronously with two foci of adenolymphoma within the superficial lobe of a parotid gland. A review of this rare occurrence, as quoted in the literature, has been undertaken.- - - - - - - - - - ranking = 531.85823452594keywords = adenolymphoma (Clic here for more details about this article) |
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