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High grade transformation of salivary gland acinic cell carcinoma with emphasis on histological diagnosis and clinical implications

dc.contributor.authorBury, Danielle
dc.contributor.authorDafalla, Mugtaba
dc.contributor.authorAhmed, Shabada
dc.contributor.authorHellquist, Henrik
dc.date.accessioned2017-04-07T15:57:23Z
dc.date.available2017-04-07T15:57:23Z
dc.date.issued2016
dc.description.abstractAcinic cell carcinoma (ACC) is commonly thought of as a low grade malignant salivary neoplasm, and possibly has the best prognosis of all salivary malignancies with a 10-year survival of almost 90%. High grade transformation (HGT) in these tumours is a relatively rare event but is increasingly being reported. HGT (formerly referred to as dedifferentiation) in acinic cell carcinoma has shown to drastically reduce the survival rates and its recognition is imperative as more aggressive clinical management is needed. We report a case of parotid acinic cell carcinoma in a 82-year old woman where the fine needle aspirate suggested either pleomorphic adenoma or the possibility of carcinoma ex pleomorphic adenoma. Per operatively it became clear that the facial nerve was involved and the tumour mass was debulked only. The histology showed an acinic cell carcinoma with foci of high grade differentiation (ACC-HGT). We describe the histology of HGT in ACC and the most common differential diagnoses. We emphasise the need of very generous sampling of the tumour, as to recognise any area of high grade transformation, some of which can be very small. A literature review of ACC-HGT as well as HGT in other salivary gland neoplasms is presented. HGT of ACC greatly thus influences the macroscopical and microscopical evaluation of the specimen but also, given the high incidence of metastases and morbidity, carries significant treatment implications. (C) 2016 Elsevier GmbH. All rights reserved.
dc.identifier.doi10.1016/j.prp.2016.08.005
dc.identifier.issn0344-0338
dc.identifier.urihttp://hdl.handle.net/10400.1/9695
dc.language.isoeng
dc.peerreviewedyes
dc.relation.isbasedonWOS:000389159500016
dc.titleHigh grade transformation of salivary gland acinic cell carcinoma with emphasis on histological diagnosis and clinical implications
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1063
oaire.citation.issue11
oaire.citation.startPage1059
oaire.citation.titlePathology - Research and Practice
oaire.citation.volume212
person.familyNameHellquist
person.givenNameHenrik
person.identifier.ciencia-id9C11-221B-93BF
person.identifier.orcid0000-0003-3044-6065
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicatione632b82a-cf09-4f9a-b445-9d9a9de47438
relation.isAuthorOfPublication.latestForDiscoverye632b82a-cf09-4f9a-b445-9d9a9de47438

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