New Diagnostic Strategy for Atypical Pituitary Adenomas: Clinical and Histopathological Score
Keywords:
Diagnosis, pituitary neoplasm, prognosisAbstract
Background: Currently, prognosis remains the major challenge of the adenomatous pituitary pathology. According to the World Health Organization (WHO), pituitary tumors are classified into typical adenoma, atypical adenoma and carcinoma. Given that the prediction of the behavior of these tumors remains a major clinical and anatomo-pathological challenge, we propose a new diagnostic strategy to orient prognosis and therapy of these tumors, based on a multiparameter system, as well as a simple clinico-laboratory and radio-histopathologic diagnostic algorithm.
Methods: To validate the method, we have applied it retrospectively to a series of 243 pituitary adenomas (diagnosed according to the 2004 WHO classification on tumors of endocrine organs), operated by transsphenoidal via between 2004 and 2014, at Centro Hospitalar Lisboa Norte, the largest reference center in Portugal.
Result: A hundred twenty nine had a follow-up of at least 5 years in order to evaluate recurrences. While 6.2% of typical adenomas recurred, among the atypical the recurrence rate was 68.8%.
Conclusion: With this work we intend to provide a more specific differentiating system of possible malignancy, to early identify probable cases of poor evolution, which could be very useful in clinical practice.
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