A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Clinicopathological characteristics and cell cycle proteins as potential prognostic factors in myoepithelial carcinoma of salivary glands




TekijätPassador-Santos F, Grönroos M, Irish J, Gilbert R, Gullane P, Perez-Ordonez B, Mäkitie A, Leivo I

Julkaisuvuosi2016

JournalVirchows Archiv

Vuosikerta468

Numero3

Aloitussivu305

Lopetussivu312

Sivujen määrä8

ISSN0945-6317

DOIhttps://doi.org/10.1007/s00428-015-1889-2


Tiivistelmä

Myoepithelial carcinoma (MCA) is a rare malignancy of salivary glands that was included in the WHO Classification of Head and Neck Tumors in 1991. MCA has shown a broad spectrum of clinical outcomes, but attempts to identify prognostic markers for this malignancy have not resulted in significant progress. Conventional histopathological characteristics such as tumour grade, nuclear atypia, mitotic index and cell proliferation have failed to predict the outcome of MCA. In this study, we reviewed the histopathology of 19 cases of MCA focusing on nuclear atypia, mitotic count, tumour necrosis, nerve and vascular invasion and occurrence of a pre-existing pleomorphic adenoma in connection to the MCA. Histopathological characteristics and clinical information were correlated with the immunohistochemical expression of cell cycle proteins including c-Myc, p21, Cdk4 and Cyclin D3. The proportion of tumour cells immunoreactive for these markers and their intensity of staining were correlated with clinical information using logistic regression, Kaplan-Meier and Cox regression. Using logistic regression analysis, cytoplasmic c-Myc expression was associated with the occurrence of metastases (P =  0.019), but limitations of semi-quantitation of immunostaining and the limited number of cases preclude definitive conclusions. Our data show that the occurrence of tumour necrosis predicts poor disease-free survival in MCA (P = 0.035).



Last updated on 2024-26-11 at 21:47