alexa Oncocytic neoplasms of the thyroid gland.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Thyroid Disorders & Therapy

Author(s): Tallini G, Carcangiu ML, Rosai J

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Abstract Among well differentiated thyroid tumors, oncocytic neoplasms feature a distinctive set of clinical, morphologic and biologic characteristics, some of which have been a matter of controversy. The world literature on this subject has been reviewed to show that: 1) Morphology accurately predicts the behavior of Hürthle cell tumors assuming that the specimen has been adequately sampled; 2) Capsular and/or vascular invasion is the sine qua non condition for a diagnosis of malignancy; 3) "Indeterminate" or "possibly malignant" categories are useless because in the absence of invasion these neoplasms almost invariably behave in a benign fashion; 4) Among cases histologically classified as malignant, a clinically aggressive behavior is to be expected in a high percentage of cases; 5) Size alone cannot be used as a criterion of malignancy; 6) Less than total thyroidectomy provides an adequate treatment for histologically benign tumors; aggressive surgical procedures (i.e. total thyroidectomy) do not diminish the incidence of metastasis; 7) Analysis of DNA content may be helpful in defining subsets of patients with Hürthle cell carcinomas having a particularly poor prognosis; 8) Mitochondrial and/or nuclear DNA abnormalities probably play an important role in the cellular alterations which characterize the phenotype of oncocytes.
This article was published in Acta Pathol Jpn and referenced in Journal of Thyroid Disorders & Therapy

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