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Published on: September 1, 2015
Functional pathology of aldosterone-producing adenoma
Abstract:
In addition to the morphological examination, the measurement of the content of corticosteroids was done in aldosterone-producing adenoma. Histologically, the adenoma consists of four types of cells. The major component of the adenoma was clear-type cells. In this type of cells, the activities of 3 beta-hydroxysteroid dehydrogenase and glucose-6-phosphate dehydrogenase showed weakly positive. The fine structure was characterized by numerous lipid vacuoles and poor organellae. On the contrary, intermediate- and compact-type cells revealed higher than moderate activities of these enzymes. Moreover, marked development of smooth endoplasmic reticulum and mitochondria was noted. Zona glomerulosa-type cells were observed only in a small part. The content of aldosterone and corticosterone in aldosterone-producing adenoma was significantly larger than those of the other type of adenoma. A tendency of positive correlation between the increase of compact-type cells and content of aldosterone was found. The cell origin of this aldosterone-producing adenoma and functional role of clear- and compact-type cells were also discussed.
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