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Scintigraphic patterns of adrenocortical carcinoma: morpho-functional correlates
L Barzon1, P Zucchetta, M Boscaro
1Department of Medical and Surgical Sciences, Division of Endocrinology, University of Padova, Italy.
European Journal of Endocrinology
|November 27, 2001
Summary
Adrenocortical scintigraphy typically shows no uptake in adrenocortical carcinomas. However, some hormone-secreting tumors may show atypical tracer uptake, which is not predictive of tumor features.
Area of Science:
- Endocrinology
- Nuclear Medicine
- Oncology
Background:
- Adrenocortical scintigraphy aids in characterizing adrenal tumors.
- Understanding scintigraphic patterns in adrenocortical carcinomas is crucial.
Purpose of the Study:
- To investigate relationships between scintigraphic patterns and endocrine/morphological data in adrenocortical carcinomas.
- To evaluate the diagnostic utility of 75Se-methyl-nor-cholesterol scintigraphy.
Main Methods:
- Studied 21 patients with adrenocortical carcinoma (11 nonfunctioning, 10 hormone-secreting).
- Utilized 75Se-methyl-nor-cholesterol scintigraphy.
- Analyzed clinical, hormonal, radiological, and pathological data.
Main Results:
- 18/21 cases showed no radiocholesterol uptake in the adrenal mass.
- Nonfunctioning tumors visualized contralateral adrenal glands; hyperfunctioning tumors did not.
- 3/10 hormone-secreting tumors showed tracer uptake, with no contralateral visualization.
Conclusions:
- Radiocholesterol scintigraphy is valuable for diagnosing adrenocortical carcinomas, which are usually non-visualized.
- Atypical increased tracer uptake in 30% of hypersecreting tumors does not predict biochemical or histological features.