Tuesday 3 July 2012

Types of Pituitary Adenoma

Pituitary adenoma is commonly found in the benign stages and does not show any symptoms. The pituitary adenomas are found in the epithelial lining of the glandular tissue that forms the pituitary gland in the human brain. It is formed due to mutation in the cells that grow into benign tumors. The tumor is benign in the initial stages when the cells are inactive. But with the progress of time they may become malignant and proliferate to other parts of the body.

In the earlier days, the adenoma was identified using a staining technique where the tumors were exposed to chemicals like haemotoxin and eosin. It was thus named as acidophilic, basophilic and chromophobe. But according to new technology, the acute adenoma is classified based on the type of hormone that is secreted by the tumors. Therefore it could be hormone secreting or chromophobe that does not produce any hormones.

Thus various abnormalities have been identified based on this methodology of classification. A good example is the Cushing's disease that is associated with Corticotrophic adenomas which are a type of pituitary adenoma and they secrete adenosorticotrophic hormone and pro-opiomelocortin hormone.

Acromeagaly is also a genetic abnormality found in gigantic adults as the presence of somatotrophic adenomas that secrete an excessive amount of gonadotrophoic hormone. Several medical conditions are identified by this method of classification of the pituitary adenomas. The said adenomas are present in the benign form, and do not present any symptoms, therefore the adenomas are often identified in the advanced stages, and thus there is a very low survival rate.

The Author is an expert Health adviser and runs a site on pleomorphic adenoma

He is also an editor for Health Encyclopedia

Article Source: http://EzineArticles.com/4062334

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